LIST OF SCIENTIFIC WORKS PAPERS        Conferences and poster presentations       Lectures delivered            Projects

1. G. Becjarov, V. Kmetov, L. Futekov
Fresenius' Z. Anal. Chem. 355, 971-974 (1989)
Trace analysis in highly concentrated salt solutions of sodium chloride and ammonium fluoride using  flame atomic absorption spectrometry.
2. V. Kmetov, N. Nikolov, J. Dentchev
Universite de Plovdiv "P. Hilendarski" Travaux scientifiques, vol. 26. fasc.5, 1988-Chimie
Analytical application of micro sampling system MS-II in flame atomic absorption determination of Iron in samples containing aluminium
3. V. Kmetov, L. Futekov
Fresenius' Z. Anal. Chem. 338: 895-897 (1990)
Flame atomic-absorption spectrometric determination of traces of copper, iron, lead and manganese in nitric acid by injection dozation of concentrated solutions neutralised with ammonia.
4. V. Stefanova, V. Kmetov, L. Futekov
Bulgarian Chemical Communications - 1, 25 (1992) Perkin Elmer Seminar May 1992 Sofia
ICP-MS method for determination of toxic elements in tobacco smoke
5. V. Stefanova, V. Kmetov, L. Futekov
Analytical Laboratory, II, 3, 1993
Discrete techniques for sample introduction in ICP-MS (REVIEW)
6. P.Tittarelli, C. Biffi, V. Kmetov,
J. Anal. Atom. Spectrom. March, 9, 443 (1993)
Vaporisation of Silicon and Germanium as Molecular Species in Electrothermal Atomizers
7. Z. Simeonova, G. Toneva, D. Dobreva, L. Bedrosian, V. Kmetov and L. Futekov
Analytical Laboratory - II, 4 (1993)
Determination of Lead and Cadmium in Whole Blood of Workers in a Non-ferrous Metal Factory
8. A. Anselmi,P.Tittarelli, C. Biffi, V. Kmetov,
Rev. Combustibili, 48, 2, 53 (1994)
Comportamenti degli Elementi del Gruppo 14 in Spettrometria di Assortimento Atomico con Atomizzazione Elettrotermica: Interferenze Dovute alla Formazione di Vapori Molecolari.
9. P.Tittarelli, A. Anselmi,, C. Biffi, V. Kmetov,
Spectrochimica acta Part B, 50 (1995)
Formation of tin and lead molecular species in electrothermal atomisers
10. V. Stefanova, V. Kmetov, L. Futekov, D. Gerganska
Analytical Laboratory - 6, 1 (1997)
Flow Injection Multielemental analysis by upgraded ELAN 500 ICP-mass spectrometer. Direct analysis of hard drinks
11. V. Stefanova, V. Kmetov, L. Futekov,
J. Anal. Atom. Spectrom., 12, 1271 (1997)
Air Segmented Discrete Introduction in Inductively Coupled Plasma Mass Spectrometry
12. E. Rosenberg, R. Krishka, R. Wissiack, V. Kmetov, R. Josephs, E. Razzazi, M. Grasserbauer,
J. Chromatogr. A 819, 227 (1998)
High-performance liquid chromatography-atmospheric-pressure chemical ionisation mass spectrometry as a new tool for the determination of mycotoxin zearenone in food and feed
13. Erwin Rosenberg, Veselin Kmetov, Manfred Grasserbauer
Fresenius Journal of Analytical Chemistry, 366, 4, 400 (2000)
Investigating the potential of high performance-liquid chromatography with atmospheric pressure chemical ionisation-mass spectrometry as an alternative method for the speciation analysis of organotin compounds
14. Chr. Malakova, V. Stefanova, V. Kmetov
Universite de Plovdiv "P. Hilendarski" Travaux scientifiques, vol. 29. fasc.5, 2000-Chimie 27-33
Multi-elemental analysis of plats samples by ICP-MS
15. M.Mitrikov, Hr.Hristov , A.Antonov, V.Kmetov, V.Stefanova
Report at the 4^th General Conference of the Balkan Physicalunion, 22-25 August, 2000, Veliko Turnovo, Bulgaria,Bulgarian Nuclear Society Transactions, 2000 (presented for publication)
Depositions of heavy metals and radionuclides in the region of the plant for non-ferrous metals (Plovdiv) studied by nuclear methods of analysis
16. M.Mitrikov, A.Antonov, Hr.Hristov, A.G.Belov, V.Kmetov, J.Edrev, P.S.Zaprianova, P.Nedeva, G.Doikova
Report at the 4^th General Conference of the Balkan Physicalunion, 22-25 August, 2000, Veliko Turnovo, Bulgaria,Bulgarian Nuclear Society Transactions, 2000 (presented for publication)
Investigation the ecological state of the MARITZA-IZTOK region in Bulgaria using different methods for analysis
17. V. Kmetov, D. Hristozov, V. Stefanova, St. Tenev, L. Futekov
University of Plovdiv "P. Hilendarski" Scientific works vol. 30. Book 5, 2001-Chemistry 57-62
Computer automated system for micro-sampling in FAAS, software for signal acquisition and treatment
18. N. Bosev, V. Kmetov, V. Stefanova,
University of Plovdiv "P. Hilendarski" Scientific works vol. 30. Book 5, 2001-Chemistry
Extraction FAAS determination of Cu and Bi in zinc electrolyte by means of threeethtylammonium dibenziltetrathiophosphate
19 . V. Stefanova, V. Kmetov, D. Georgieva, L. Futekov,
University of Plovdiv "P. Hilendarski" Scientific works vol. 30. Book 5, 2001-Chemistry 45-50
Multi element responses of FI-ICP-MS. Influence of ionisation efficiency and mass discrimination effects
20. V. Stefanova, V. Kmetov, D. Georgieva,
University of Plovdiv "P. Hilendarski" Scientific works vol. 30. Book 5, 2001-Chemistry 51-55
ICP-MS application for trace element analysis in Bulgarian cosmetics
21. Mitrikov, V.Kmetov, V.Stefanova, Hr.Hristov, A.Antonov,
University of Plovdiv "P. Hilendarski" Scientific works vol. 30. Book 5, 2001-Phisics
Atmospheric depositions of heavy metals and radionuclides in the region of the Plant for Non-Ferrous Metals -Plovdiv
22. V. Stefanova, Chr. Malakova, J. Uzunova, V. Kmetov
Union of Bulgarian Scientists Scientific works 2001 (accepted)
Influence of solutions of low aliphatic alcohols on the element emission signals in ICP-OES
23. V. Kmetov, A. Sanchez, A. Canals, D. Georgieva, V. Stefanova
University of Plovdiv "P. Hilendarski" Scientific works, 31 book 5, 2002-Chemistry, 17-28
Determination of lead and cadmium in wool and goat's hair from animal population in the vicinity of Plant for non-ferrous metals (Plovdiv) by ETAAS and ICP-MS methods.
24. V. Kmetov, V. Stefanova, D. Hristozov, D. Georgieva, A. Canals
Talanta, 59, 2003, 123-136
Determination of calcium, iron and manganese in moss by automated discrete sampling flame atomic-absorption spectrometry as an alternative to the ICP-MS analysis
25. V. Stefanova, V. Kmetov, A. Canals
J. Anal. Atom. Spectrom.  (accepted)
Application of internal standardization in ICP-QMS through discrete sample introduction methodologies
26. D. Hristozov, C.E. Domini, V. Kmetov, V. Stefanova, D. Georgieva, A. Canals
Anal. Chim. Acta, Volume 516, Issues 1-2, 19 July 2004, Pages 187-196
Direct ultrasound-assisted extraction of heavy metals from sewage sludge samples for ICP-OES analysis

Conferences and poster presentations:
1. G. Becjarov, V. Kmetov, L. Futekov
XXVI Colloquium Spectroscopicum Internationale, July 2-9, 1989, Sofia, vol. 1, C-7
Trace analysis in highly concentrated salt solutions of sodium chloride and ammonium fluoride using flame atomic absorption spectrometry.
2. V. Kmetov, L. Futekov
XXVI Colloquium Spectroscopicum Internationale, July 2-9,1989, Sofia, vol. 1, C-8
Trace analysis in citric acid by flame atomic absorption using dosage of pre-heated 50% solutions.
3. V. Stefanova, V. Kmetov, E. Uzunova, L. Futekov
III VARIAN SIAS'92, 8-10 Sept.1992
New ICP-MS method for multi-element semiquantitative analysis. Tobacco products analysis.
4. V. Stefanova, V. Kmetov, L. Futekov
XXVIII Colloquium Spectroscopicum Internationale, June 29- July 4, 1993, York, WP6.2
Influence of Reference Isotopes for Ion Optics optimisation on ICP-MS Semiquantitative Capabilities.
5. V. Kmetov, P. Tittarelli
IV VARIAN SIAS'93 7-10 September, 1993 AE-P150;
ETV Sampling in ICP. Vaporisation of Environmental Solid Samples.
6. V. Kmetov, L. Futekov
IV SIAS'93 7-10 September , 1993 AA-P149;
Injection of Hot Highly Concentrated Solutions for Flame Atomic Absorption Analysis.
7. V. Kmetov, V. Stefanova, P. Penchev, L. Futekov J. Tyson
PERKIN ELMER Seminar 22-23 March 1994 Sofia
Flow Injection Sample Introduction in ICP-MS
8. V. Kmetov, L. Futekov
Second National Conference of Chemistry - Plovdiv 12-14 April 1995 R VI/16 312
FAAS trace elements analysis of pure substances by discrete introduction of hot highly concentrated solutions.
9. V. Kmetov, V. Stefanova, L. Futekov
V SIAS'95 20-22 September , 1995 , AES-P6;
Air segmented discrete introduction in ICP-MS
10. V. Stefanova, V. Kmetov, L. Futekov, R. Fandukova
Third National Conference of Chemistry - Plovdiv 14-16 April 1998 V/41, 254
ICP-MS method for direct analysis of trace elements in sea water by air-segmented discrete introduction.
11. V. Kmetov, V. Stefanova, L. Futekov10. V. Kmetov, V. Stefanova, P. Konstantinov, L.Futekov
Scientific Session "75 Years Analytical Chemistry at the University of Sofia“ 27 May 1999 Sofia;
Indirect method for determination of AgI in pyrotechnical materials by FAAS analysis of Ag in high concentrated solutions
12. V. Stefanova, V. Kmetov, D. Georgieva, L.Futekov
Scientific Session "75 Years Analytical Chemistry at the University of Sofia“ 27 May 1999 Sofia;
Algorithm for internal standard application for transient signals from ICP-MS
13. V. Kmetov, A. Canals
Scientific Session at the University of Plovdiv, 19 May 2000 Plovdiv; (oral presentation)
Some observations on the process of aerosol generation and transport used for trace elements analysis by atomic spectroscopy methods.
14. V. Stefanova, V. Kmetov, L. Futekov, A. Antonov, Hr. Hristov, M. Mitrikov.
Scientific Session at the University of Plovdiv, 19 May 2000 Plovdiv; (oral presentation)
Determination of ²³⁵U/²³⁸U isotope ratio and trace elements analysis in water, soils and vegetables by ICP-MS. Application for ascertainment of the trance border contamination after Kosovo war.
15. Hr. Malakova, V. Stefanova, V. Kmetov,
Scientific Session at the University of Plovdiv, 19 May 2000 Plovdiv; (oral presentation)
Multi-element analysis of plants samples by ICP-MS."
16. V. Stefanova, V. Kmetov, D. Georgieva, L. Futekov
Anniversary Scientific Session 40 Years Chemistry in the University of Plovdiv 21-22- May, 2001, P10
Multi element responses of FI-ICP-MS: Influence of ionisation efficiency and mass discrimination effects.
17. V. Stefanova, V. Kmetov, D. Georgieva,
Anniversary Scientific Session 40 Years Chemistry in the University of Plovdiv 21-22- May, 2001, P11
Application of ICP-MS for trace elements analyses in Bulgarian cosmetics.
18. V. Kmetov, D. Hristozov, V. Stefanova, St. Tenev, L. Futekov
Anniversary Scientific Session 40 Years Chemistry in the University of Plovdiv 21-22- May, 2001, P12
Computer automated system for micro-sampling in FAAS, software for signal acquisition and treatment.
19. N. Bossev, V. Kmetov, V. Stefanov
Anniversary Scientific Session 40 Years Chemistry in the University of Plovdiv, 21-22- May, 2001 P17
Extraction FAAS determination of Cu and Bi in zinc electrolyte by means of 3-ethtyl ammonium-dibenzil-tetrathiophosphate (EABTP)
20. V. Kmetov, V. Stefanova, D. Georgieva, L. Futekov
Forth National Conference of Chemistry - Sofia 27-29 September 2001, 4P9
Analysis of jewelry gold alloys by micro-sampling of complex solutions into FAAS and ICP-MS.
21. V. Stefanova, Chr. Malakova, J. Uzunova, V. Kmetov
Union of Bulgarian Scientists Scientific - Scientific Session agrarian and natural science and technology 30 November 2001 P10
Influence of solutions of low aliphatic alcohols on the element emission signals in ICP-OES
22. V. Kmetov, A. Sanchez, D. Georgieva, V. Stefanova
Scientific Session of the University of Plovdiv, 6-7 June 2002 Koprivkite; P3
Determination of lead and cadmium in wool and goat's hair from animal population in the vicinity of Plant for non-ferrous metals (Plovdiv) by ETAAS and ICP-MS methods.
23. V. Kmetov, A. Sanchez, A. Canals, D. Georgieva, V. Stefanova
5th European Furnance Symposium and 10^th International Solid Sampling Colloquium with Atomic Spectrometry, 1-4 September 2002,
South-West University "Neofit Rilski",Blagoevgrad, P28, 90
Determination of lead and cadmium in wool and goat's hair from animal population in the vicinity of Plant for non-ferrous metals (Plovdiv) by ETAAS and ICP-MS methods.
24. V. Stefanova, V. Kmetov
2003 European Winter Conference on Plasma Spectrochemistry, Germany Garmisch-Partenkirchen 12-17 January 03, P-IN-039   EWCoPSC'03
Algorithm for application of internal standard on ICP-MS transient signals      ( Poster ppt- file) (Report about the conference - ppt-file)

Research and applied projects:
1. Bulgarian National Scientific Comity KN-86 1986-1988
Development of Automated System for Analysis by Flame Atomic Absorption.
2. Government Comity of Industrialization D-8 1988-1991
Ultra pure substances - methods of analysis and determination of traces 10^-5% -10^-7 %
3. National Science Found MSE X-203/92 1992-1994
ICP-MS - development of method for electrothermal vaporization sampling by graphite furnace.
Application for environmental control of toxic element’s pollution in biological and environmental samples.
4. National Science Found - MEST X-467/94 1994-1997
Discrete sampling in ICP-MS for determination of trace elements in environmental samples.
5. Science Found University of Plovdiv N 25 1997-1999
Control of toxic elements in cosmetics according to the European quality standards by using a new sample introduction technique in ICP-MS.
6. Ministry of Environment and Waters NCOSUR 1999 - Investigation of the level of contamination with heavy metals and uranium in of the environment components of the Nort-West border with Yugoslavia caused by the military actions of NATO in Kosovo
7. Science Found University of Plovdiv N 21-F (1999-2000г.)
Gama-spectrometry analysis of variety of environmental species in Plovdiv region.
8. Science Found University of Plovdiv N 21-F (2001-2003)
Study of the heavy metals and radio-nucleotides content in variety of samples (soils, water and biological objects) from the vicinity of the Non-ferrous metal plant Plovdiv and the MARITZA-IZTOK power plant.
9.  Ministerio De Ciencia y Tecnologia - Espania Main researcher: Antonio Canals Hernandez DPI2002-04305-C02-01 - Desarollo de un sistema de introduccion de muestras liquidas adecuado para un instrumento de ICP-MS provisto de una celula de colision. Duration: Three years
10. Science Found University of Plovdiv PU X-26 2003-2004 Adopting and development of an uncertainty estimation procedure in analytical atomic spectrochemistry in a compliance to the new European meteorological requirements

Lectures delivered:
1. S.I.S.S. Conference on Spectroscopy held in Gargnano, Italy
from 26 to 26 May 1993
Formation and Stability of Molecular Species in Electrothermal Atomisers.
2. Stazione Sperimentale per i Combustibili - 29 June 1993
Semi-quantitative Analysis by ICP-MS .
3. Second National Conference of Chemistry - Plovdiv 12-14 April 1995 R VI/7 303
Formation and Stability of Si , Ge and S Molecular Species in Electrothermal Atomisers.
4. University of Alicante 10 May 1996 “Research and Teaching in Analytical Chemistry at the University of Plovdiv”
5. University of Alicante 14 June 1996 - “Electrothermal vaporisation in graphite furnace and its relation to Atomic Spectroscopy”
6. University of Alicante 2 July 1996 - “ Some observation in Atomic Spectroscopy on pneumatic
sample nebulization: air segmented introduction; high salt content solutions and hot solutions”.
7. Institute fur Analytische Chemie, Technische Universitad Wien, SS 1998 Modern Analytische Chemie
Liquid sample discrete introduction in atomic spectroscopy
8. Joseph Fourier University Grenoble 2 November 1998 -
Rresearch and applied results obtained by the group of Atomic Spectroscopy at the Plovdiv University
7. ANALYTICA 2003 14-15 May 03 Sofia http://www.team.bg/team2/index_bg4.html  
Fifth generation Agilent ICP-MS 7500 – end of the road from exotic to routine (for download zip PPT file)
Examples for applications of Agilent ICP-MS 7500 in practice for analysis of water, soil, food, organics and biological materials.(for download the zip  PPT file)

Application research: