IJSTR

International Journal of Scientific & Technology Research

Home Contact Us
ARCHIVES
ISSN 2277-8616











 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

IJSTR >> Volume 9 - Issue 6, June 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Making And Evaluation Of Preparedness Of Solid Mercury-Graphite Electrodes For The Stripping Voltammetric Determination Of Trace Concentrations Of Heavy Metals

[Full Text]

 

AUTHOR(S)

Dmitry Aronbaev, Sergey Aronbaev, Abdullo Nasimov, Gaukhar Narmaeva

 

KEYWORDS

Stripping Voltammetry, Solid Electrodes, Suitability Criterion, Heavy Metals, Determination.

 

ABSTRACT

The article presents the results of a study on the manufacture of solid mercury-film graphite electrodes for stripping voltammetry and the selection of criteria for evaluating their suitability in the analysis of trace heavy metal contents. The ergonomic design of an indicator carbon-paste electrode made of a high purity graphite rod, coated with an insulating sheath made of a heat shrink tube and having a cavity for filling the electroactive mass from a mixture of graphite powder and paraffin is proposed. The relationship of such physical and mechanical parameters as the size and shape of graphite particles, the ratio of the ingredients of the electroactive mixture, the ohmic resistance of the manufactured electrodes with the range of working potentials and the residual current was studied. The choice of the criterion for determining the readiness of a mercury-film graphite electrode for voltammetric measurements is substantiated. The results of the stripping voltammetric determination of cadmium, lead and copper ions in environmental objects, food and drinks using the developed electrode are presented.

 

REFERENCES

[1] Belyavskaya T.A. Brykina G.D. Determination of low concentrations of elements. – Moscow: Nauka, 1986. [in Russian].
[2] Vidra F., Shtulik K., Yulakova E. Inversion voltammetry. - Moscow: Mir, 1980. [in Russian].
[3] Mikulina I.N. Current state of the method of inversion voltammetry of solid phases. J. Analytical Chemistry 1974; 29 (6):1177 - 1193. [in Russian].
[4] Brainina Kh.Z, Stozhko N.Yu, Alyoshina L.V., Lipunova G.I. Mercury-free electrode for determination of amalgam-forming elements by the method of inversion voltammetry. J. Analytical Chemistry 2003;.58 (10): 1078-1084. [in Russian].
[5] Electroanalytical methods. Theory and Practice / ed. F. Scholz. Moscow: Binom. Laboratoriya znaniy, 2006. [in Russian].
[6] Electrochemical methods of analysis in environmental control. Moscow: Himiya, 1990. , [in Russian].
[7] Budnikov G.K., Evtyugin G.A., Maystrenko V.N. Modified electrodes for voltammetry in chemistry. biology and medicine. Moscow: Binom. Laboratoriya znaniy, 2012 [in Russian].
[8] Švancara I., Vytřas K., Barek J., Jiří Zima J. Carbon Paste Electrodes in Modern Electroanalysis. Analytical Chemistry 2001; 31(4):311-345. /doi.org/10.1080/ 20014091076785
[9] Zen J.-M., Senthil Kumar A., Tsai D.-M. Recent Updates of Chemically Modified Electrodes in Analytical Chemistry. Electroanalysis 2003; 15 (13):1073-1087.
[10] Edwards G.A., Bergen A.J. Chemically modified electrodes. Iowa state university 2007; 9(8): 296-327.
[11] Aronbaev S.D., Nasimov A.M., Aronbaev D.M, Nasyirov R.H. Computerized analytical complex for inversion voltammetry based on the universal polarograph PU-1. Ilmiy tadkikotlar ahborotnomasi SamDU (Vestnik SamGU) 2009;1(53): 47-50. [in Russian].
[12] Software «PowerGraph». http://www.powergraph.ru/soft/pgview.asp
[13] Aronbaev D.M, Aronbaev S.D, Narmaeva G.Z., Isakova D.T. Indicator coal-paste electrode for voltamperometric analysis. Zavodskaya laboratoriya. Diagnostika materialov 2020; 82(2): 5-14. [in Russian].
[14] Budnikov G.K. Fundamentals of modern electrochemical analysis.- Moscow: Binom. Laboratoriya znanii, 2003. [in Russian].
[15] Stozhko N.Yu. Modified graphite-containing electrodes in inverse voltammetry. Abstract DSc. thesis. Ekaterinburg, 2006. - 50 p. [in Russian].
[16] Narmaeva G.Z., Aronbaev S.D., Aronbaev D.M., Abilkosymova G.M. Features of modification of carbon graphite electrodes with mercury. Materials Int. Scientific and practical. Conf. “Science today. Reality and perspectives. Vologda, 2018 : 13-15.
[17] RUz patent No. 04712. Coal paste electrode / M.M. Tabachnikov, S.V. Olikhova, A.M. Gevorgyan, E. Zhozhkun. 7G01 No. 27/30 IHDP 9900590.1 . Rasmiy ahborotnoma. 2001; 2 (34):62-63.
[18] RF patent No. 12862 for utility model. Electrode for voltammetric analysis / B.F. Nazarov. V.I. Chernov. Yu.A. Ivanov . G01N 27/48. Publ.: 10.02.2000. [in Russian].
[19] Patent USSR No. 1315884 Coal-paste electrode for voltammetric analysis / A.M. Troshenkov, A.I. Kamenev. G01N 27/48. Publ.07.06.1987. Bull. 21. [in Russian].
[20] Methodical manual for the discipline "Modern problems of analytical control and monitoring. / Portal.tpu.ru: 7777 / SHARED / m / MICROLAB /.