Kiril Gavazov

Assoc. Prof., Ph.D.

 

Kiril Gavazov photo

 

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

E-mail: kgavazov@uni-plovdiv.bg
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

  • 2001 – Ph.D. in Inorganic Chemistry
  • 1995-2000 – A Ph.D. student at the University of Plovdiv “Paissii Hilendarski”
  • 1993 – Graduated University of Plovdiv “Paissii Hilendarski”, Bulgaria (M.S. in Chemistry, Organic Chemistry)
  • 1986 – Finished Secondary School, Aksakovo, Bulgaria

 

EMPLOYMENT

  • 2012 – Head of the Department of General and Inorganic Chemistry, University of Plovdiv “Paissii Hilendarski”
  • 2009- current – Assoc. Prof., Department of General and Inorganic Chemistry, University of Plovdiv “Paissii Hilendarski”
  • 2003-2009 – Chief Assistant Prof., Department of General and Inorganic Chemistry, University of Plovdiv “Paissii Hilendarski”
  • 1998-2003 – Senior Assistant Prof., Department of General and Inorganic Chemistry, University of Plovdiv “Paissii Hilendarski”
  • 1994-1998 – Assistant Prof., Department of General and Inorganic Chemistry, University of Plovdiv “Paissii Hilendarski”

 

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.      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, Analytical Laboratory 7 (3) (1998) 127-133. [abstract]

2.      Simeonova Z., Gavazov K., Alexandrov A., 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.      Gavazov K., Simeonova Z., Alexandrov A., Extraction-spectrophotometric study on the complex formation in the vanadium(V) – pyrogallol – neotetrazolium chloride system (Åêñòðàêöèîííî-ñïåêòðîôîòîìåòðè÷íî èçó÷àâàíå íà êîìïëåêñîîáðàçóâàíåòî â ñèñòåìàòà âàíàäèé(V) – ïèðîãàëîë – íåîòåòðàçîëîâ õëîðèä), Collection of papers presented at the jubilee scientific session 50th anniversary of the union of scientists in Bulgaria – Plovdiv, Union of Scientists in Bulgaria – Plovdiv, Vol. 3, Academic Publishing House of the Higher Institute of Agriculture – Plovdiv, pp.189-192 (in Bulgarian).

4.      Simeonova Z., Gavazov K., Alexandrov A., Extraction studies in the system vanadium(V) – 4-(2-pyridylazo)resorcinol (PAR) – 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-tetrazolium chloride (INT) – water – chloroform, Æóðíàë íåîðãàíè÷åñêîé õèìèè 44(4) (1999) 676-680; Russ. J. Inorg. Chem. 44(4) (1999) 621-625. [abstract]

5.      Gavazov K., Simeonova Zh., Alexandrov A., Extraction-spectrophotometric study of ternary ion-association complexes of vanadium(IV) with pyrogallol and tetrazolium salts, Æóðíàë íåîðãàíè÷åñêîé õèìèè 45(1) (2000) 142-147; Russ. J. Inorg. Chem. 45(1) (2000) 133-138. [abstract]

6.      Gavazov K.,.Simeonova Zh, Alexandrov A., 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.      Gavazov K., Simeonova Zh., Alexandrov A., Extraction-spectrophotometric study of the system vanadium(V) - pyrogallol - iodo-nitro-tetrazolium chloride - water - n-butanol, Æóðíàë íåîðãàíè÷åñêîé õèìèè 46(3) (2001) 494-498; Russ. J. Inorg. Chem. 46(3) (2001) 427-431. [abstract]

8.      Gavazov K., Simeonova Zh., Alexandrov A., Ternary complexes of vanadium(V) with 4-nitrocatechol and neotetrazolium chloride. Extraction-spectrophotometric study, Ïëîâäèâñêè óíèâåðñèòåò „Ïàèñèé Õèëåíäàðñêè”- Áúëãàðèÿ, Íàó÷íè òðóäîâå. Õèìèÿ (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 31(5) (2002) 5-11.
[full text]

9.      Gavazov K., Simeonova Zh., Alexandrov A., Åêñòðàêöèîííî-ñïåöòðîôîòîìåòðè÷íî îïðåäåëÿíå íà âàíàäèé â ñòîìàíè ñ 4-íèòðîêàòåõîë è íåîòåòðàçîëîâ õëîðèä (Extraction spectrophotometric determination of vanadium in steels using 4-nitrocatechol and neotetrazolium chloride), Ïëîâäèâñêè óíèâåðñèòåò „Ïàèñèé Õèëåíäàðñêè”- Áúëãàðèÿ, Íàó÷íè òðóäîâå. Õèìèÿ (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 31(5) (2002) 13-16 (in Bulgarian, abstract in English). [full text]

10.  Gavazov K., Simeonova Zh., Alexandrov A., 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.  Gavazov K., Simeonova Zh., Extraction-spectrophotometric study of the system vanadium(V) - 4-(2-thiazolylazo)resorcinol (TAR) – triphenyltetrazolium chloride (TTC) – water – chloroform, Ïëîâäèâñêè óíèâåðñèòåò „Ïàèñèé Õèëåíäàðñêè”- Áúëãàðèÿ, Íàó÷íè òðóäîâå. Õèìèÿ (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 32(5) (2004) 15-20. [full text]

12.  Simeonova Z., Gavazov K., Alexandrov A. Extraction-spectrophotometric study of the complex formation in the system vanadium(IV) – 4-nitrocatechol – iodonitrotetrazolium chloride – water – chloroform, Ïëîâäèâñêè óíèâåðñèòåò „Ïàèñèé Õèëåíäàðñêè”-Áúëãàðèÿ, Íàó÷íè òðóäîâå, Õèìèÿ (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 33(5) (2005) 5-9. [full text]

13.  Dimitrov A., Lekova V., Gavazov K., Boyanov B., 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]

14.  Gavazov K., Patronov G., 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, (Ed. S. Vasilev), Balkan Conference of Young Scientists, 16-18 June 2005, Plovdiv, p. 290-295. [abstract]

15.  Simeonova Z., Gavazov K., Alexandrov A., 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]

16.  Gavazov K., Lekova V., Patronov G., Tǔrkyilmaz M. 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]

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; CD Å-book pp. 1305-1312. [abstract]

18.  Lekova V., Gavazov K., Dimitrov A., À 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.  Gavazov K., Lekova V., Patronov G., 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. [abstract] [full text]

20.  Gavazov, K., Lekova, V., Dimitrov, A., 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.  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? (Ñúùåñòâóâà ëè ëèíåéíà çàâèñèìîñò ìåæäó ìîëåêóëíàòà ìàñà íà òåòðàçîëîâèòå êàòèîíè è ñòàáèëíîñòòà íà éîííî-àñîöèèðàíèòå èì êîìïëåêñè?) Ïëîâäèâñêè óíèâåðñèòåò „Ïàèñèé Õèëåíäàðñêè”-Áúëãàðèÿ, Íàó÷íè òðóäîâå, Õèìèÿ (University of Plovdiv “Paissii Hilendarski”-Bulgaria, Scientific works. Chemistry) 34(5) (2006) 19-27 (in Bulgarian). [full text]

22.  Gavazov K., Lekova V., Dimitrov A., 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. [abstract]

23.  Dimitrov A., Lekova V., Gavazov K., Boyanov B., 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] [full text]

24.  Gavazov K., Lekova V., Dimitrov A., Patronov G., 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. [abstract]

25.  Lekova V., Gavazov K., Dimitrov A., Racheva P., 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. [abstract]

26.  Ãàâàçîâ Ê., Äèìèòðîâ À., Ëåêîâà Â., Ïðèìåíåíèå òåòðàçîëèåâûõ ñîëåé â íåîðãàíè÷åñêîì àíàëèçå, Óñïåõè õèìèè, 76(2), (2007) 187-198; Gavazov K., Lekova V., Dimitrov, The use of tetrazolium salts in inorganic analysis, Russian Chemical Reviews 76(2), (2007) 169-179. [abstract] [full text (in Russian)]

27.  Gavazov K., Tǔrkyilmaz M., Altun Ö., 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, Ïëîâäèâñêè óíèâåðñèòåò „Ïàèñèé Õèëåíäàðñêè”, Íàó÷íè òðóäîâå – õèìèÿ; 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, Æóðíàë àíàëèòè÷åñêîé õèìèè; J. Anal. Chem. 65(1), 2010, 21-25. [abstract] [full text]

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]

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]

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, 461-467. [abstract]

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

39.  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., accepted.

40.  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, accepted.

41.  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, 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 (Ðúêîâîäñòâî çà ëàáîðàòîðíè óïðàæíåíèÿ ïî íåîðãàíè÷íà õèìèÿ), 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 (Ïåðèîäè÷íà ñèñòåìà íà õèìè÷íèòå åëåìåíòè-A4), Datamap-Europe, Sofia 2004.

3.   Gavazov K., Periodic Table of the Elements Wall Chart (Ñòåííà ïåðèîäè÷íà ñèñòåìà íà õèìè÷íèòå åëåìåíòè – ñïðàâî÷íèê), Datamap-Europe, Sofia 2004, 2010.

4.   Lekova V., K. Gavazov, A. Dimitrov, Problems in general and inorganic chemistry. Handbook (Ðúêîâîäñòâî çà ðåøàâàíå íà çàäà÷è ïî oáùà è íåîðãàíè÷íà õèìèÿ), 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); Ïðîáëåìúò çà åëåìåíòèòå è òÿõíàòà êëàñèôèêàöèÿ â õèìè÷íàòà èñòîðèÿ. ×àñò I. Îò äðåâíîñòòà äî Ëàâîàçèå, ñï. Êîñíîñ, áð. 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); Ïðîáëåìúò çà åëåìåíòèòå è òÿõíàòà êëàñèôèêàöèÿ â õèìè÷íàòà èñòîðèÿ. ×àñò II. Îò Äàëòîí äî Ìåíäåëååâ, ñï. Êîñíîñ, áð. 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); Ïðîáëåìúò çà åëåìåíòèòå è òÿõíàòà êëàñèôèêàöèÿ â õèìè÷íàòà èñòîðèÿ. ×àñò III. Îò Ìîðîçîâ äî Òîìñúí, ñï. Êîñíîñ, áð. 27 (2009) [full text (in Bulgarian)]

8.   Gavazov K., The Liesegang Phenomenon (in Bulgarian); ßâëåíèåòî íà Ëèçåãàíã, ñï. Êîñíîñ, áð. 28 (2009) [full text (in Bulgarian)]

9.  Gavazov K., Periodic Table of the Elements-A5 (Ïåðèîäè÷íà ñèñòåìà íà õèìè÷íèòå åëåìåíòè-A5), Datamap-Europe, Sofia 2010.

 

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) – pyrogallol – iodonitrotetrazolium 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 (Åêñòðàêöèîííî-ñïåêòðîôîòîìåòðè÷íî èçó÷àâàíå íà êîìïëåêñîîáðàçóâàíåòî â ñèñòåìàòà âàíàäèé(V) – ïèðîãàëîë – íåîòåòðàçîëîâ õëîðèä), Scientists Union of Bulgaria – Plovdiv, 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) – water – chloroform 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 Íàöèîíàëíà êîíôåðåíöèÿ ïî õèìèÿ, Ïðîãðàìà è ðåçþìåòà, 27-29 Ñåïòåìâðè, 2001 Ñîôèÿ, Ïå÷àòíà áàçà íà ñúþçà íà ó÷åíèòå â Áúëãàðèÿ, ñòð.141.)

9.      Gavazov K., Simeonova Zh., Alexandrov A., Extraction-spectrophotometric study of the system vanadium(V) – pyridylazoresorcinol – tetrazol 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 Íàöèîíàëíà êîíôåðåíöèÿ ïî õèìèÿ, Ïðîãðàìà è ðåçþìåòà, 29 Ñåïòåìâðè-1 Îêòîìâðè 2004, Sofia, Ñîôèÿ, Ïå÷àòíà áàçà íà ñúþçà íà ó÷åíèòå â Áúëãàðèÿ, 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-nitrocatechol – iodonitrotetrazolium chloride – water – chloroform, 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)resorcinol – neotetrazolium chloride – water – chloroform, Scientific Conference with International Participation under the heading “60 years Department of Inorganic Chemistry – University of Chemical Technology and Metallurgy, 11th November 2005, Sofia, Abstracts, pp.92-93. (Ãàâàçîâ Ê., Ëåêîâà Â., Äèìèòðîâ À., Åêñòðàêöèîííè èçñëåäâàíèÿ íà ñèñòåìàòà âàíàäèé(V) – 4-(2-òèàçîëèëàçî)-ðåçîðöèí – íåîòåòðàçîëîâ õëîðèä – âîäà – õëîðîôîðì, ÕÒÌÓ, Íàó÷íà êîíôåðåíöèÿ ñ ìåæäóíàðîäíî ó÷àñòèå ïî ñëó÷àé 60-ãîäèøíèíàòà íà êàòåäðà „Íåîðãàíè÷íà õèìèÿ”, 11 íîåìâðè 2005, ÕÒÌÓ-Ñîôèÿ, ñòð.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 Plovdiv “Paissii Hilendarski”, Hisar, 2006.

16.  Gavazov K., Lekova V., Dimitrov A., Complex formation and extraction in the vanadium(IV) – 4-nitrocatechol – neotetrazolium chloride – water – organic 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]

                                              

D) Ph. D. Thesis

Extraction of ternary ion-association complexes of vanadium(IV,V) with polyphenols and tetrazolium salts” BAS, Sofia 2000. (The following above-mentioned papers and posters have evolved from my doctoral thesis: A1 – A7, C1 – C5) [full text (in Bulgarian)]

 

TEACHING   ACTIVITIES

My teaching activities include three disciplines:

·         General and Inorganic Chemistry

·         Geochemistry

·         Chemical History