Kiril Gavazov

Assoc. Prof., Ph.D.


 

 

Address: Department of General and Inorganic Chemistry, Faculty of Chemistry, Plovdiv UniversityPaisii Hilendarski, 24 Tsar Assen St., BG-4000 Plovdiv, BULGARIA

E-mail: kgavazov@uni-plovdiv.net
Personal E-mail: kgavazov@abv.bg

Office Phone: +359-32-261-420

 

Contents of this Web Page

1.  CV

2.  Publication list (scientific papers; training aids, handbooks and educational papers; contributions to academic conferences)

3.  Teaching activities

4.  Best photos

 


Curriculum vitae


 

Date of birth: 16th October, 1968

 

Place of birth: Plovdiv, Bulgaria

 

Marital Status: Married. One child

Nationality: Bulgarian

EDUCATION

 

EMPLOYMENT

 

Membership:

 ACS Chemistry for Life ?  http://www.sustz.com/en/images/usb_eng.jpg

Avocations: hiking [click here to see my best photos], map-making

Foreign Languages: English, Russian

 


Publication list


A) Scientific papers

 

1.      K. Gavazov, Z. Simeonova, A. Alexandrov, Extraction-Spectrophotometric Study of the System Vanadium(V) – 4-(2-Pyridylazo)Resorcinol – 2,2’,5,5’-Tetraphenyl-3,3’-(p-biphenyl)ditetrazolium Chloride – Water – Chloroform. Determination of Vanadium in Steels, Analytical Laboratory 7 (3) (1998) 127-133. [abstract]

2.      Z. Simeonova, K. Gavazov, A. Alexandrov, Ternary Complex of Vanadium(V) with 4-Nitrocatechol and Tetrazolium Salt and its Application to Extraction-spectrophotometric Determination of Vanadium(V) in Steels, Analytical Laboratory 7 (4) (1998) 184-188. [abstract]

3.      K. Gavazov, Z. Simeonova, A. Alexandrov, Extraction-Spectrophotometric Study on the Complex Formation in the Vanadium(V) – PyrogallolNeotetrazolium Chloride System (Екстракционно-спектрофотометрично изучаване на комплексообразуването в системата ванадий(V) – пирогалолнеотетразолов хлорид), Collection of papers presented at the jubilee scientific session 50th anniversary of the union of scientists in Bulgaria – Plovdiv, Union of Scientists in BulgariaPlovdiv, Vol. 3, Academic Publishing House of the Higher Institute of Agriculture – Plovdiv, pp.189-192 (in Bulgarian).

4.      Z. Simeonova, K. Gavazov, A. Alexandrov, Extraction Studies in the System Vanadium(V) – 4-(2-Pyridylazo)resorcinol (PAR) – 2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyl-tetrazolium chloride (INT) – WaterChloroform, Журнал неорганической химии 44(4) (1999) 676-680; Russ. J. Inorg. Chem. 44(4) (1999) 621-625. [abstract]

5.      K. Gavazov, Z. Simeonova, A. Alexandrov, Extraction-Spectrophotometric Study of Ternary Ion-Association Complexes of Vanadium(IV) with Pyrogallol and Tetrazolium Salts, Журнал неорганической химии 45(1) (2000) 142-147; Russ. J. Inorg. Chem. 45(1) (2000) 133-138. [abstract]

6.      K. Gavazov, Z. Simeonova, A. Alexandrov, Extraction Spectrophotometric Determination of Vanadium in Natural Waters and Aluminium Allous Using Pyridyl Azo Resorcinol (PAR) and Iodo-Nitro-Tetrazolium Chloride (INT), Talanta 52(3) (2000) 539-544. [abstract]

7.      K. Gavazov, Z. Simeonova, A. Alexandrov, Extraction-Spectrophotometric Study of the System Vanadium(V) Pyrogallol Iodo-Nitro-Tetrazolium Chloride Water n-Butanol, Журнал неорганической химии 46(3) (2001) 494-498; Russ. J. Inorg. Chem. 46(3) (2001) 427-431. [abstract]

8.      K. Gavazov, Z. Simeonova, A. Alexandrov, Ternary Complexes of Vanadium(V) with 4-Nitrocatechol and Neotetrazolium Chloride. Extraction-Spectrophotometric Study, Пловдивски университет „Паисий Хилендарски”- България, Научни трудове. Химия (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 31(5) (2002) 5-11.
[full text]

9.      K. Gavazov, Z. Simeonova, A. Alexandrov, Екстракционно-спецтрофотометрично определяне на ванадий в стомани с 4-нитрокатехол и неотетразолов хлорид (Extraction-Spectrophotometric Determination of Vanadium in Steels Using 4-Nitrocatechol and Neotetrazolium Chloride), Пловдивски университет „Паисий Хилендарски”- България, Научни трудове. Химия (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 31(5) (2002) 13-16 (in Bulgarian, abstract in English). [full text]

10.  K. Gavazov, Z. Simeonova, A. Alexandrov, Extraction-Spectrophotometric Study of the System Vanadium(V) - 4-(2-Pyridylazo)resorcinol (PAR)Tetrazol violet (TV) – Water – 1,2-Dichloroethane, Journal of the University of Chemical Technology and Metallurgy 38(3) (2003) 909-916. [abstract]

11.  K. Gavazov, Z. Simeonova, Extraction-Spectrophotometric Study of the System Vanadium(V) - 4-(2-Thiazolylazo)resorcinol (TAR) – Triphenyltetrazolium chloride (TTC) – WaterChloroform, Пловдивски университет „Паисий Хилендарски”- България, Научни трудове. Химия (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 32(5) (2004) 15-20. [full text]

12.  Z. Simeonova, K. Gavazov, A. Alexandrov, Extraction-Spectrophotometric Study of the Complex Formation in the System Vanadium(IV) – 4-Nitrocatechol – Iodonitrotetrazolium Chloride – Water – Chloroform, Пловдивски университетПаисий Хилендарски”-България, Научни трудове, Химия (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 33(5) (2005) 5-9. [full text]

13.  A. Dimitrov, V. Lekova, K. Gavazov, B. Boyanov, Investigation of the Extraction Equilibrium of Ion-association Complexes of Molybdenum(VI) with Some Polyphenols and Thiazolyl Blue. Extraction-Spectrophotometric Determination of Molybdenum, Cent. Eur. J. Chem. 3(4), (2005) 747-755. [abstract] [full text]

14.  K. Gavazov, G. Patronov, Extraction-Spectrophotometric Determination of Vanadium in Catalysts with Azoderivatives of Resorcinol and Tetrazolium Salts, Scientific Researches of the Union of Scientists – Plovdiv, Series C. Technics and Technologies, Vol. 5, (S. Vassilev, Ed.), Balkan Conference of Young Scientists, 16-18 June 2005, Plovdiv, p. 290-295. [abstract] [full text]

15.  Z. Simeonova, K. Gavazov, A. Alexandrov, Extraction-Spectrophotometric Study on the System Vanadium(V) -  2,3-Dihydroxynaphthalene – Iodonitrotetrazolium Chloride – Water – Chloroform and Its Analytical Application, Cent. Eur. J. Chem. 4(2), (2006) 258-266. [abstract] [full text]

16.  K. Gavazov, V. Lekova, G. Patronov, M. Tǔrkyilmaz, Extractive-Spectrophotometric Determination of Vanadium(IV/V) in Catalysts using 4-(2-Pyridylazo)-resorcinol and Tetrazolium Violet, Chem. Anal. (Warsaw) 51, (2006), 221-227. [abstract] [full text]

17.  K. Gavazov, V. Lekova, A. Dimitrov, Extraction-Spectrophotometric Determination of Molybdenum, Tungsten and Vanadium in Products of Ferrous Metallurgy as Ternary Complexes with Polyphenols and Tetrazolium Salts, 13th International Metallurgy and Materials Congress, 9-12 November 2006, Istanbul, Turkey, Abstracts Book, p.180; CD Е-book pp. 1305-1312. [abstract]

18.  V. Lekova, K. Gavazov, A. Dimitrov, А Ternary Complex of Tungsten(VI) with 4-Nitrocatechol and Thiazolyl Blue and Its Application for Extraction-spectrophotometric Determination of Tungsten, Chem. Papers 60(4), 2006, 283-287. [abstract]

19.  K. Gavazov, V. Lekova, G. Patronov, A Ternary Complex of Vanadium(V) with 4-(2-Pyridylazo)-resorcinol and Thiazolil Blue and its Application, Acta Chim. Slov., 53(4), 2006, 506-511. [full text]

20.  K. Gavazov, V. Lekova, A. Dimitrov, Extraction Studies on the System Vanadium(V) – 4-(2-Thiazolylazo)-resorcinol – Neotetrazolium Chloride – Water – Chloroform, J. Univ. Chem. Tech. Met. 41(2), (2006), 217-220. [full text]

21.  K. Gavazov, A. Dimitrov, V. Lekova, E. Karaasenova, Is There a Linear Relationship Between the Molecular Mass of Tetrazolium Cations and the Stability of their Ion-association Complexes? (Съществува ли линейна зависимост между молекулната маса на тетразоловите катиони и стабилността на йонно-асоциираните им комплекси?) Пловдивски университет „Паисий Хилендарски”-България, Научни трудове, Химия (University of PlovdivPaissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 34(5) (2006) 19-27 (in Bulgarian). [full text]

22.  K. Gavazov, V. Lekova, A. Dimitrov, Complex Formation and Extraction in the Vanadium(IV) – 4-Nitrocatechol – Neotetrazolium Chloride – Water – Organic Solvent System, Union of Scientists in Bulgaria, National Scientific Conference with International Participation under the heading “20 Years Union of Scientists in Bulgaria – Branch Smolyan” October, 20th-21th, 2006, Scientific papers ISBN 978-954-8329-87-3, pp. 808-819. [full text]

23.  A. Dimitrov, V. Lekova, K. Gavazov, B. Boyanov, Ternary Complex of Molybdenum(VI) with 4-Nitrocatechol and Tetrazolium Blue Chloride and its Application to Extraction-Spectrophotometric Analysis of Ferrous Metallurgy Products, J. Anal. Chem. 62(2), 2007, 122-125. [abstract]

24.  K. Gavazov, V. Lekova, A. Dimitrov, G. Patronov, The Solvent Extraction and Spectrophotometric Determination of Vanadium(V) with 4-(2-Thiazolylazo)-resorcinol and Tetrazolium Salts, Cent. Eur. J.Chem. 5(1), (2007), 257-270. [full text]

25.  V. Lekova, K. Gavazov, A. Dimitrov, P. Racheva, Extraction-Spectrophotometric Study on the Vanadium(V) – 2,3-Dihydroxynaphtalene – Tetrazolium Violet – Water – Chloroform System, Scientific Researches of the Union of Scientists Plovdiv, Ser. C, Vol. 6, Plovdiv 2007, pp. 171-174. [full text]

26.  K. Гавазов, A. Димитров, В. Лекова, Применение тетразолиевых солей в неорганическом анализе, Успехи химии, 76(2), (2007) 187-198; K.Gavazov, V. Lekova, A. Dimitrov, The Use of Tetrazolium Salts in Inorganic Analysis, Russian Chemical Reviews 76(2), (2007) 169-179. [abstract]

27.  K. Gavazov, M. Tǔrkyilmaz, Ö. Altun, Extractive-Spectrophotometric Investigations on Ternary Ion-Associated Complexes between the Vanadium(V) – 4-(2-Pyridylazo)-resorcinol Anionic Chelate and Some Methoxybis(tetrazolium) Cations. Bulg. Chem. Commun. 40(1) (2008) 65-69. [abstract]

28.  P. Racheva, K. Gavazov, V. Lekova, A. Dimitrov, Vanadium(IV,V) Speciation with a Catechol Derivative and a Tetrazolium Salt, Journal of the Iranian Chemical Research, 1(2), 2008, 113-121. [full text]

29.  P. Racheva, K. Gavazov, V. Lekova, A. Dimitrov, Extraction Study on the Colour Reaction for Vanadium(IV) with the 4-Nitrocatechol (NC) – Thiazolyl Blue Tetrazolium (MTT) – Water – Chloroform System, Пловдивски университет „Паисий Хилендарски”, Научни трудове – химия; University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry 36(5), 2008, 39-44. [full text]

30.  K. Gavazov, V. Lekova, B. Boyanov, A. Dimitrov, DTA and TGA Study of Some Tetrazolium Salts and their Ion-association Complexes with the Molybdenum(VI) – 4-Nitrocatechol Anionic Chelate, Journal of Thermal Analysis and Calorimetry 96(1), 2009, 249-254. [abstract]

31.  P. Racheva, K. Gavazov, V. Lekova, A. Dimitrov, Extraction Equilibria and Spectrophotometric Determination of Vanadium(V) with 4-Nitrocatechol and the Ion-pair Reagent Thiazolyl Blue Tetrazolium, Журнал аналитической химии; J. Anal. Chem. 65(1), 2010, 21-25. [abstract]

32.  Fatma Genҫ, Murat Türkyilmaz, K. Gavazov, Ternary Ion-Associated Complexes of Vanadium(IV) with 4-(2-Pyridylazo)-Resorcinol and Tetrazolium Salts. Liquid-Liquid Extraction and Spectrophotometric Investigations, Scientific Research of the Union of Scientists in Bulgaria – Plovdiv, Series B. Natural Sciences and Humanities, Vol. XII, pp. 85-90, ISSN 1311-9192, International Conference of Young Scientists, 18-19 June 2009, Plovdiv [full text]

33.  Fatma Genҫ, K. Gavazov, Murat Türkyilmaz, Ternary complexes of vanadium(IV) with 4-(2-pyridylazo)-resorcinol (PAR) and ditetrazolium chlorides (DTC), Cent. Eur. J.Chem. 8(2), (2010), 461-467. [abstract] [full text]

34.  P. Racheva, V. Lekova, T. Stefanova, A. Dimitrov, K. Gavazov, Complex Formation and Liquid-Liquid Extraction in the Niobium(V) – 4-Nitrocatechol – Thiazolyl Blue Tetrazolium System, University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry 37(5), 2010, 33-41. [full text]

35.  V. Lekova, P. Racheva, K. Stojnova, A. Dimitrov, K. Gavazov, Ternary complexes of niobium(V) with nitroderivatives of catechol and tetrazolium salts. Extraction-spectrophotometric investigations, Chemija 21(2-4), 2010, 106-111. [full text]

36.  K. Gavazov, P. Racheva, Ternary complexes of vanadium(IV) with 4-(2-thiazolylazo)resorcinol and tetrazolium chlorides, Asian Chem. Lett. 15(1-2), 2011, 77-84. [proof] [full text]

37.  G. Toncheva, K. Gavazov, V. Lekova, K. Stojnova, A. Dimitrov, Ternary Ion-association complexes between the indium(III) – 4-(2-pyridylazo)resorcinol anionic chelate and some tetrazolium cations, Cent. Eur. J. Chem. 9(6), 2011, 1143-1149. [abstract] [full text]

38.  K. B. Gavazov, Nitroderivatives of Catechol: from Synthesis to Application, Acta Chim. Slov. 59(1), 2012, 1-17 [full text]

39.  K. B. Gavazov, P. Racheva, V. Lekova, A. Dimitrov, M. Tǔrkyilmaz, F. Genҫ, Some Ternary Phenylmethoxybis(tetrazolium) Complexes of Vanadium(IV,V) and Their Constants of Association, Croatica Chem. Acta, 85(1), 2012, 53-58. [full text]

40.  K. Stojnova, K. B. Gavazov, Complex Formation in a Liquid-Liquid Extraction System Containing Gallium(III), 4-(2-Pyridylazo)resorcinol and Thiazolyl Blue Tetrazolium, Journal of Materials Science and Engineering, Sec. A, 2(5), 2012, 423-429. [full text]

41.  K. Stojnova, K. B. Gavazov, G. Toncheva, V. Lekova, A. Dimitrov, Extraction-Spectrophotometric Investigations on Two Ternary Ion-Association Complexes of Gallium, Cent. Eur. J. Chem., 10(4), 2012, 1262-1270 [abstract] [full text]

42.  T. S. Stefanova, G. K. Toncheva K. B. Gavazov, Complex Formation in a Liquid-Liquid Extraction System Containing Indium(III), 4-(2-Pyridylazo) Resorcinol and Neotetrazolium Chloride, Chemistry Journal, 2(4), 2012, 146-152. [full text]

43.  K. B. Gavazov, K. T. Stojnova, T. S. Stefanova, G. K. Toncheva, V. D. Lekova, A. N. Dimitrov, Liquid-Liquid Extraction and Spectrophotometric Characterization of Some New Ternary Ion-Association Complexes of Gallium(III) and Indium(III), Chemija, 23(4), 2012, 278-285. [full text]

44.  T. S. Stefanova, K. B. Gavazov, Phenylmethoxybis(tetrazolium) Ion-Association Complexes with an Anionic Indium(III) — 4-(2-Pyridylazo)resorcinol Chelate, Cent. Eur. J. Chem. 11(2), 2013, 280-289. [abstract] [full text]

45.  P.V. Racheva, K. B. Gavazov, V. D. Lekova, A. N. Dimitrov, Complex Formation in a Liquid-Liquid Extraction System Containing Cobalt(II), 4-(2-Pyridylazo)resorcinol, and Nitron, Journal of Materias, Volume 2013, Article ID 897343, 7 pages, http://dx.doi.org/10.1155/2013/897343. [full text]

46.  K. B. Gavazov, Extraction-Spectrophotometry of Ion-Association Complexes, Chemistry: Bulgarian Journal of Science Education, 22(2), 2013, 222-253. [abstract]

47.  V. V. Divarova, K. B. Gavazov, V. D. Lekova, A. N. Dimitrov, Spectrophotometric Investigations on Liquid-Liquid Extraction Systems Containing Cobalt, 4-(2-Pyridylazo)-resorcinol and tetrazolium salts, Chemija, 24(2), 2013, 81-87. [full text]

48.  K. T. Stojnova, K. B. Gavazov, V. D. Lekova, Ion-Association Complexes of Gallium(III) – 4-(2-Pyridylazo)-resorcinol Anionic Chelates and Dicationic Tetrazolium Reagents, Acta Chim. Slov. 60(2), 2013, 390-396. [full text]

49.  G. K.Toncheva, K. B. Gavazov, Flotation-Spectrophotometric Investigations on an Ion-Association System Containing Zirconium(IV), 2013, Chemistry Journal, 3(5), 2013, 122-127. [full text]

50.  K. B. Gavazov, G. K.Toncheva, Extraction-Spectrophotometric Studies on the Ion-Pairing Between Some 2,3,5-Substituted Monotetrazolium Cations and Anions Deriving from 4-(2-Thiazolylazo)resorcinol or 4-(2-Pyridylazo)resorcinol, Journal of Advances in Chemistry, 5(2), 2013, 641-651. [full text]

51.  T. S. Stefanova, K. B. Gavazov, G. K.Toncheva, Extraction-Spectrophotometric Characterization of a Ternary Complex of Iron(III) with 4-(2-pyridylazo)resorcinol (PAR) and 2,3,5-Triphelyl-2H-tetrazolium Chloride (TTC), Scientific research of the Union of Scientists in Bulgaria-Plovdiv, series C. Natural Sciences and Humanities, Vol. XVI, 2013, 183-189 [full text]

52.  V. V. Divarova, P. V. Racheva, V. D. Lekova, K. B. Gavazov, A. N. Dimitrov, Spectrophotometric Determination of Cobalt(II) in a Liquid-Liquid Extraction System Containing 4-(2-Thiazolylazo)resorcinol and 2,3,5-Triphenyl-2H-Tetrazolium Chloride, Journal of Chemical Technology and Metallurgy, 48(6), 2013, 623-630 [full text]

53.  K. B. Gavazov, T. S. Stefanova, G. K.Toncheva, Liquid-liquid extraction and spectrophotometric characterization of a new ternary ion-association complex of iron(III), Journal of Chemical Technology and Metallurgy, 48(6), 2013, 642-648 [full text]

54.  A. Z. Zalov, K.B. Gavazov, Extractive spectrophotometric determination of nickel with 2-hydroxy-5-iodothiophenol and diphenylguanidine. Chemistry Journal, 4(2), 2014, 20-25. [full text]

55.  K. B. Gavazov, T. S. Stefanova,.G. K. Toncheva, Extraction-spectrophotometric studies on the complex formation of iron(III) with 4-(2-thiazolylazo)resorcinol and tetrazolium salts, Journal of Advances in Chemistry, 10(3), 2014, 2491-2501. [full text]

56.  K. B. Gavazov., T. S. Stefanova, Liquid-liquid extraction-spectrophotometric investigations of three ternary complexes of vanadium. Croatica Chemica Acta, 87(3), 2014, 233-240 [full text]

57.  A. Z. Zalov, K. B. Gavazov, Liquid-liquid extraction-spectrophotometric determination of molybdenum using o-hydroxythiophenols. Journal of Advances in Chemistry, 10(8), 2014, 3003-3011 [full text]

58.  V. B. Delchev, K. B. Gavazov, I. G. Shterev, Ground- and excited-state stability of the conformers of 3,5-dinitrocatechol and its complexes with W(VI) and V(V): combined theoretical and experimental study. Journal of Molecular Modeling, 20, 2014, 2549 [abstract]

59.  A. Z. Zalov, K.B. Gavazov, Extraction-spectrophotometric study of ternary complexes of NbV and TaV. Chemistry Journal, 1(2), 2015, 15-19  [full text]

60.  G. K.Toncheva, T. S. Stefanova, K. B. Gavazov, Liquid-liquid extraction-chromogenic systems containing iron(III), 4-nitrocatechol and tetrazolium salts, Oriental Journal of Chemistry, 31(1), 2015, 327-332 [full text].

61.  T. S. Stefanova, K.K. Simitchiev, K. B. Gavazov, Liquid–liquid extraction and cloud point extraction for spectrophotometric determination of vanadium using 4-(2-pyridylazo)resorcinol, Chemical Papers, 69(4) 2015, 495-503 [full text]

62.  K. B. Gavazov, G. K. Toncheva, Ion-association between some ditetrazolium cations and anions originated from 4-(2-thiazolylazo)resorcinol or 4-(2-pyridylazo)resorcinol, Russian Journal of General Chemistry, 85(1), 2015, 192-197 [abstract]

63.  K. B. Gavazov, G. K.Toncheva, T. S. Stefanova, Extraction-Chromogenic Systems Containing Iron(III), 4-(2-Thiazolylazo) Resorcinol and Ditetrazolium Salts, Oriental Journal of Chemistry, 31(2), 2015, 981-986 [full text]

64.  K. B. Gavazov, V. B. Delchev, G. K. Toncheva, Z. G. Georgieva, Extraction-Spectrophotometric and Theoretical (Hartree-Fock) Investigations on a Ternary Complex of Iron(II) with 4-Nitrocatechol and 2,3,5-Triphenyl-2H-tetrazolium, Russian Journal of General Chemistry, 85(8), 2015, 1945-1951 [abstract]

65.  K. B. Gavazov, V. B. Delchev, T. S. Stefanova, G. K. Toncheva, K. K. Simitchiev, Specific Features of Tetranitrotetrazolium Blue Chloride as an Extraction Reagent for Iron(III), Russian Journal of General Chemistry, 86, 2016, accepted.

 

B) Training aids, handbooks and educational papers

 

1.   Pelova R., Dimitrov A., Pancheva Z., Kostova S., Simeonova Z., Gavazov K., Lekova V., Laboratory experiments in inorganic chemistry. Handbook (Ръководство за лабораторни упражнения по неорганична химия), University Press “Paissii Hilendarski”, Plovdiv, 2003, 2005 (Chapters 1, 2, 3, 4, 7 and 29; pp. 3-32, 38-44, 137-139)

2.   Gavazov K., Periodic Table of the Elements-A4 (Периодична система на химичните елементи-A4), Datamap-Europe, Sofia 2004.

3.   Gavazov K., Periodic Table of the Elements Wall Chart (Стенна периодична система на химичните елементисправочник), Datamap-Europe, Sofia 2004, 2010.

4.   Lekova V., K. Gavazov, A. Dimitrov, Problems in general and inorganic chemistry. Handbook (Ръководство за решаване на задачи по oбща и неорганична химия), University Press “Paissii Hilendarski”, Plovdiv 2008 (in Bulgarian).

5.   Gavazov K., The problem of elements and their classification in the chemical history. Part I. From ancient times to the time of Lavoisier (in Bulgarian); Проблемът за елементите и тяхната класификация в химичната история. Част I. От древността до Лавоазие, сп. Коснос, бр. 20 (2008) [full text (in Bulgarian)]

6.   Gavazov K., The problem of elements and their classification in the chemical history. Part II. From Dalton to Mendeleev (in Bulgarian); Проблемът за елементите и тяхната класификация в химичната история. Част II. От Далтон до Менделеев, сп. Коснос, бр. 22 (2008)  [full text (in Bulgarian)]

7.   Gavazov K., The problem of elements and their classification in the chemical history. Part III. From Morozov to Thomson (in Bulgarian); Проблемът за елементите и тяхната класификация в химичната история. Част III. От Морозов до Томсън, сп. Коснос, бр. 27 (2009) [full text (in Bulgarian)]

8.   Gavazov K., The Liesegang Phenomenon (in Bulgarian); Явлението на Лизеганг, сп. Коснос, бр. 28 (2009) [full text (in Bulgarian)]

9.   Gavazov K., Periodic Table of the Elements-A5 (Периодична система на химичните елементи-A5), Datamap-Europe, Sofia 2010.

10. Racheva P., Lekova V., Gavazov K., Angelacheva K. Toncheva G., Some changes in the nomenclature of inorganic chemistryrecommendation of international union of pure and applied chemistry (IUPAC) 2005, {Някои промени в номенклатурата по неорганична химия – препоръки на международния съюз по чиста и приложна химия (IUPAC) 2005 г}, Plovdiv UniversityPaisii Hilendarski”, FilialSmolyan (ПУ 'Паисий Хилендасрки', Филиал Смолян), Vol. 2, P. 1, 2012, 177-185. [full text (in Bulgarian)]

 

C) Contributions to academic conferences

 

1.      Gavazov K., Simeonova Z., Alexandrov A., Extraction-spectrophotometric study of the system vanadium(V) – 4-(2-pyridylazo)resorcinol – 2,2’,5,5’-tetraphenyl-3,3’-(p-biphenyl)ditetrazolium chloride – water – chloroform. Determination of vanadium in steels, Third National Conference of Chemistry, 14-16 April 1998, Plovdiv, Abstract book, p.236 (in Bulgarian).

2.      Simeonova Z., Gavazov K., Alexandrov A., Extraction-spectrophotometric study of the vanadium(V) – 4-nitrocatechol – 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-tetrazolium chloride water – chloroform system, Third National Conference of Chemistry, 14-16 April 1998, Plovdiv, Abstract book, p.240 (in Bulgarian).

3.      Gavazov K., Simeonova Z., Alexandrov A., Extraction-spectrophotometric investigations on the vanadium(IV) – pyrogalloliodonitrotetrazolium chloride – water – n-butanol system, SIAS’98, 15-17 September, 1998, MOL66, Varna.

4.      Gavazov K., Simeonova Z., Alexandrov A., Extraction-spectrophotometric study on the complex formation in the vanadium(V) – pyrogallol neotetrazolium chloride system (Екстракционно-спектрофотометрично изучаване на комплексообразуването в системата ванадий(V) – пирогалолнеотетразолов хлорид), Scientists Union of BulgariaPlovdiv, Jubilee Scientific Session, November 1998, Plovdiv.

5.      Gavazov K., Simeonova Z., Alexandrov A., Extraction-spectrophotometric determination of vanadium in waters, Jubilee Scientific Session – 75 years Department of Analytical Chemistry, Sofia University “St. Kliment Ohridski”, 27 May 1999, Sofia.

6.      Simeonova Z., Gavazov K., Alexandrov A., The tetrazolium salts 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazolium chloride (INT) and 3,3’-(3,3’-dimethoxy-4,4’-byphenylen)-bis[2-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride] (NBT) as reagents for indirect determination of vanadium, VII Russian Conference with International Participation under the heading “Organic reagents in analytical chemistry”, 20-25 September 1999, Saratov, Russia. [abstract]

7.      Gavazov K., Simeonova Z., Alexandrov A., Extraction spectrophotometric determination of vanadium in natural waters and aluminium allous using pyridyl azo resorcinol (PAR) and iodo-nitro-tetrazolium chloride,  Scientific Session of University of Plovdiv “Paissii Hilendarski, 19 May 2000, Plovdiv (oral presentation).

8.      Simeonova Z., Gavazov K., Alexandrov A., Extraction-spectrophotometric investigations on the complex formation in the vanadium(IV) – 4-nitrocatechol (4-NC) – iodonitrotetrazolium chloride (INT) – waterchloroform system, IV National Conference of Chemistry under the heading “100 Years Union of Chemists in Bulgaria, Program and Abstracts, 27-29 September, 2001, Sofia, p. 141. (IV Национална конференция по химия, Програма и резюмета, 27-29 Септември, 2001 София, Печатна база на съюза на учените в България, стр.141.)

9.      Gavazov K., Simeonova Zh., Alexandrov A., Extraction-spectrophotometric study of the system vanadium(V) – pyridylazoresorcinoltetrazol violet – water – dichloroethane, Jubilee Scientific Conference with International Participation. Abstracts, University of Chemical Technology and Metallurgy, 4-5 June, 2003 Sofia, p. 346.

10.  Simeonova Zh., Gavazov K., Alexandrov A., Extraction-spectrophotometric determination of vanadium(V) with 2,3-dihydroxynaphtalene and iodonitrotetrazolium chloride, 5th National Conference of Chemistry, Program and Abstracts, 29th September – 1st October 2004, Ed. L. Petrov, Ch. Bonev, I. Havezov and N. Naydenov, Union of Scientists in Bulgaria, Sofia, 2004, p. 131. (V Национална конференция по химия, Програма и резюмета, 29 Септември-1 Октомври 2004, Sofia, София, Печатна база на съюза на учените в България, 131.)

11.  Gavazov K. Ternary ion-association complexes of vanadium(IV,V) with polyphenols & tetrazolium salts and their analytical application, Chemistry Days in Trakya University, 23 May, 2005, Edirne, Turkey (oral presentation).

12.  Simeonova Z., Gavazov K., Alexandrov A. Extraction-spectrophotometric study of the complex formation in the system vanadium(IV) – 4-nitrocatecholiodonitrotetrazolium chloridewaterchloroform, 4th Scientific Conference with International Participation of Chemical Faculty at the University of Plovdiv “Paissii Hilendarski, Koprivki, 2005.

13.  Gavazov K., Patronov G. Extraction-spectrophotometric determination of vanadium in catalysts with azoderivatives of resorcinol and tetrazolium salts, Balkan Conference of Young Scientists, 16-18 June 2005, Plovdiv T-CH-33.

14.  Gavazov K., Lekova V., Dimitrov A., Extraction studies on the system vanadium(V) – 4-(2-thiazolylazo)resorcinolneotetrazolium chloridewater chloroform, Scientific Conference with International Participation under the heading “60 years Department of Inorganic ChemistryUniversity of Chemical Technology and Metallurgy, 11th November 2005, Sofia, Abstracts, pp.92-93. (Гавазов К., Лекова В., Димитров А., Екстракционни изследвания на системата ванадий(V) – 4-(2-тиазолилазо)-резорциннеотетразолов хлорид – вода – хлороформ, ХТМУ, Научна конференция с международно участие по случай 60-годишнината на катедра „Неорганична химия”, 11 ноември 2005, ХТМУ-София, стр.92-93).

15.  Gavazov K., Dimitrov A., Lekova V., Karaasenova E., Is there linear relationship between the molecular mass of tetrazolium cations and the stability of their ion-association complexes?, 6th Scientific Conference with International Participation organized by Chemical Faculty at the University of PlovdivPaissii Hilendarski, Hisar, 2006.

16.  Gavazov K., Lekova V., Dimitrov A., Complex formation and extraction in the vanadium(IV) – 4-nitrocatecholneotetrazolium chloridewaterorganic solvent system, National Scientific Conference with International Participation under the heading “20 Years Union of Scientists in Bulgaria – Branch Smolyan October, 20th-21th, 2006, Smolyan.

17.  Gavazov K., Lekova V., Dimitrov A., Extraction-spectrophotometric determination of molybdenum, tungsten and vanadium in products of ferrous metallurgy as ternary complexes with polyphenols and tetrazolium salts, 13th International Metallurgy and Materials Congress, 9-12 November 2006, Istanbul, Turkey, Abstracts Book, p.180. [abstract]

18.  Gavazov K., Dimitrov A., Lekova V., New developments of the tetrazolium salts as reagents in inorganic analysis, Chemistry Days in Trakya University, Edirne, Turkey 23-24 May, 2007 (oral presentation).

19.  Lekova V., Gavazov K., Dimitrov A., Racheva P., Extraction-spectrophotometric study on the vanadium(V) – 2,3-dihydroxynaphtalene – tetrazolium violet – water – chloroform system, Union in Scientists in Bulgaria – Plovdiv, Yong Scientists Club, International Conference of Young Scientists, 14-16 June 2007, Plovdiv.

20.  Türkyilmaz M., Altun Ö., Gavazov K., Extractive-Spectrophotometric Investigations on Ternary Ion-Associated Vanadium(V) Complexes, ACS Mid-Atlantic Regional Meeting MARM 2008, May 17-21 2008, Queensborough Community College, Bayside, Queens NY, USA, p. 557; [abstract]

21.  Racheva P., Lekova V., Gavazov K., Dimitrov A., Extraction-spectrophotometric study on the niobium(V) – 3,5-dinitrocathchol (DNC) – 2,3,5-triphenyltetrazolium chloride (TTC) – water – chloroform system, 6th International Conference of the Chemical Sociaties of the South-Eastern European Countries, Sixth National Conference on Chemistry, 10-14 September 2008, Sofia, Book of Abstracts, p. 155. [abstract]

22.  Gavazov K., Racheva P., Lekova V., Dimitrov A., Vanadium(IV/V) speciation with 4-Nitrocatechol and Thiazolyl Blue Tetrazolium, VII National Conference with International Participation Natural Sciences 2008”, Shumen University Episkop Konstantin Preslavski”, 25-28 September 2008, Varna.

23.  Racheva P., Gavazov K., Lekova V., Dimitrov A., Extraction study on the colour reaction for vanadium(IV) with the 4-nitrocatechol (4-NC) – thiazolyl blue tetrazolium (MTT) – water – chloroform system, 7th Chemistry Conference, University of Plovdiv “Paisii Khilendarski, „St. St. Cyric and Juliett” complex, 10-11 October 2008, Book of Abstracts, p.18. [abstract]

24.  Fatma Genҫ, Murat Türkyilmaz, K. Gavazov, Ternary Ion-Associated Complexes of Vanadium(IV) with 4-(2-Pyridylazo)-Resorcinol and Tetrazolium Salts. Liquid-Liquid Extraction and Spectrophotometric Investigations, International Conference of Young Scientists, 18-19 June 2009, Plovdiv, Bulgaria. [abstract]

25.  Fatma Genҫ, Murat Türkyilmaz, K. Gavazov, Some Ternary Complexes of Vanadium(IV), 65th  Southwest Regional Meeting of the American Chemical Society, El Paso, Texas, USA, November 4-7, 2009. [abstract]

26.  Racheva P., Lekova V., Dimitrov A., Gavazov K., Complexes of Niobium(V) with 4-Nitrocatechol and Blue Tetrazolium Chloride. Extraction-Spectrophotometric Characterization, 8th Chemistry Conference, University of Plovdiv “Paisii Hilendarski, Koprivshtitsa, 18-19 June 2010, Book of Abstracts, p.16. [abstract]

27.  V. Lekova, K. Gavazov, B. Boyanov, A. Dimitrov, DTA and TGA study of some tetrazolium salts, Seventh National Conference on Chemistry; International Conference on Green Technologies and Environmental Protection, 26-29 May 2011, Sofia, Bulgaria, Book of Abstracts, p. 33. [abstract]

28.  G. Toncheva, K. Gavazov, V. Lekova, K. Stojnova, A. Dimitrov, Ternary Ion-Association Complexes Between the Indium(III) – 4-(2-Pyridylazo)resorcinol Anionic Chelate and Some Tetrazolium Cations, 9th Chemistry Conference and Workshop BioSupport, University of Plovdiv “Paisii Hilendarski, Plovdiv, 14-16 October 2011, Book of Abstracts, p.19. [abstract]

29.  K. Stojnova, K. Gavazov, G. Toncheva, V. Lekova, A. Dimitrov, Complex Formation in a Liquid-Liquid Extraction System Containing Gallium(III) – 4-(2-pyridylazo)resorcinol and 2,3,5-Triphenyl-2H-tetrazolium Chloride, 9th Chemistry Conference and Workshop BioSupport, University of Plovdiv “Paisii Hilendarski, Plovdiv, 14-16 October 2011, Book of Abstracts, p.20. [abstract]

30.  Racheva P., Lekova V., Gavazov K., Angelacheva K. Toncheva G., Some changes in the nomenclature of inorganic chemistryrecommendation of international union of pure and applied chemistry (IUPAC) 2005, {Някои промени в номенклатурата по неорганична химия – препоръки на международния съюз по чиста и приложна химия (IUPAC) 2005 г}, Jubilee National Scientific Conference With International Participation “Traditions, Directions, Challenges”, Smolyan, October 19th– 21st, 2012; Plovdiv UniversityPaisii Hilendarski”, FilialSmolyan (ПУ 'Паисий Хилендасрки', Филиал Смолян), Vol. 2, P. 1, 2012, 177-185.

31.  Simitchiev, K, Stefanova, V., Kmetov V., Penchev P., Zapryanova V., Gavazov K., Stefanova T., Kovachev N., Canals A., Cloud Point Extraction - a Modern Alternative to Liquid-Liquid Extraction, Seminar ‘Modern Analytical Chemistry’, University of Technology, Vienna, Austria, 26 April 2013.

32.  Gavazov K.B., Stefanova T.S., Toncheva G.K., Liquid-Liquid Extraction and Spectrophotometric Characterization of a New Ternary Ion-association Complex of Iron(III), Anniversary Scientific Conference with International Participation “60 Years UCTM”, Sofia, June 4-5, 2013, Book of Abstracts, I-5, (oral presentation).

33.  Divarova, V., Racheva P., Lekova V., Gavazov, K., Dimitrov A., Spectrophotometric Determination of Cobalt in a Liquid-Liquid Extraction System, Anniversary Scientific Conference with International Participation “60 Years UCTM”, Sofia, June 4-5, 2013, Book of Abstracts, I-15.

34.  Stefanova T.S., Gavazov K.B., Toncheva G.K., Extraction-Spectrophotometric Characterization of a Ternary Complex of Iron(III) with 4-(2-pyridylazo)resorcinol (PAR) and 2,3,5-Triphelyl-2H-tetrazolium Chloride (TTC), IV International Conference of Young Scientists,  Plovdiv, 13-15 June, 2013.

35.  Stefanova, T. S., Simitchiev, K. K., Gavazov, K. B., „Liquid–liquid extraction and cloud point extraction for spectrophotometric determination of vanadium using 4-(2-pyridylazo)resorcinol and 2,3,5-Triphenyl-2H-tetrazolium chloride”, СеминарСъвременни методи за анализ и контрол на храни и околна среда, Пловдивски университет П. Хилендарски”, 21 Май, 2014.

36.  Стефанова, Т., Томова, К., Гавазов, K., „Екстракционно-спектрофотометрични изследвания на тройни комплекси на вандий(V) с 4-(2-тиазолилазо)орцинол и тетразолиеви соли”, Втора научна конференция за студенти и докторанти Предизвикателства в Химията Пловдив, 21.11.2014.

37.  Stefanova, T. S., Toncheva, G. K., Gavazov, K. B.Extraction-spectrophotometric studies on the complex formation of iron(III) with 4-(2-thiazolylazo)resorcinol and tetrazolium salts”, СеминарСъвременни методи за химически анализ и контрол, Пловдивски университетП. Хилендарски, 20 Май, 2015.

38.  Toncheva, G. K., Gavazov, K. B., „Ion-association between some ditetrazolium cations and anions originating from 4-(2-thiazolylazo)resorcinol or 4-(2-pyridylazo)resorcinol”, СеминарСъвременни методи за химически анализ и контрол, Пловдивски университет, 20 Май, 2015.

39.  Simitchiev, K., Stefanova, V., Kmetov, V., Zapryanova, V., Petleshkova, M., Gavazov, K., Stefanova, T., Canals, A. Cloud Point Extraction – fundamentals and applicability with different techniques for instrumental analysis”, 7th Black Sea Basin Conference On Analytical Chemistry, Golden Sands, Varna, 10-15 September 2015.

40.  Toncheva, G. Gavazov, K, Delchev, V., Georgieva, Z. Extraction-spectrophotometric and theoretical (Hartree-Fock) investigations on a ternary complex of iron(II) with 4-nitrocatechol and 2,3,5-triphenyl-2H-tetrazolium”, IVth International Scientific-Practical Conference "Food, Technologies & Health", Plovdiv, 20.11.2015.

 

 

D) Ph. D. Thesis

Extraction of ternary ion-association complexes of vanadium(IV,V) with polyphenols and tetrazolium salts” BAS, Sofia 2000. [full text (in Bulgarian)]


TEACHING   ACTIVITIES


My teaching activities include three disciplines:

·         General and Inorganic Chemistry

·         Geochemistry and Mineralogy

·         History of Chemistry

 

Last updated: April 2016