The problem is considered related to the accumulation of toxic metals in the body of employees in industries with unfavorable working conditions. The mechanism of accumulation of toxic metals over time in the body of employees of two facilities for solar modules production was studied. «Elemental portraits» of employees were compiled, demonstrating the redistribution of bioelements in the human body. The comparison is made concerning the «elemental portraits» of workers employed in the production of solar modules of different types: based on heterojunction silicon solar cells, and, on the basis of multijunction solar cells (using A3B5 compounds).
A comprehensive study of the technological cycle of solar modules production was carried to identify the features of such enterprises. As a result of the workers hair study, a heterogeneous distribution of the content of vital and toxic elements was revealed. Thus, in the hair samples of employees of the enterprises under consideration, a statistically significant (p < 0.05) showed an increased level of toxic and conditionally toxic elements (aluminum, germanium, gallium, indium) relative to similar indicators in a group of practically healthy people. In addition, metabolic disorders, and a decrease in the level of such vital elements as zinc, magnesium and calcium were found. Based on the conducted analysis, it was found that «elemental portraits» can be used to develop and implement measures for improving working conditions and reducing occupational risks at the workplaces of the enterprises with unfavorable working conditions, in particular, for the solar modules production.
2. Willie S.N., Sturgeon R.E. Determination of transition and rare earth elements in seawater by flow injection inductively coupled plasma time-of-flight mass spectrometry. Spectrochimica Acta Part B: Atomic Spectroscopy. 2001. Vol. 56. Iss. 9. pp. 1707–1716. DOI: 10.1016/S0584-8547(01)00263-4
3. Rare earth elements. Nottingham: British Geological Survey, 2011. 54 p.
4. Rezaee Kh., Saion E.B., Wood A.K., Abdi M.R. Rare earth elements determination and distribution patterns in surface marine sediments of the South China Sea by INAA, Malaysia. Journal of Radioanalytical and Nuclear Chemistry. 2010. Vol. 283. Iss. 3. pp. 823–829. DOI: 10.1007/s10967-009-0421-z
5. Panteeva S.V. Features of the determination of a number element contents in rock of different composition by inductively coupled plasma mass spectrometry and X-ray fluorescence analysis. Analitika i control = Analytics and Control. 2009. № 4. pp. 184–192. (In Russ.).
6. Cheng J., Cheng Z., Hu R., Cui Y., Cai J., Li N., Gui S., Sang X., Sun Q., Wang L., Hong F. Immune dysfunction and liver damage of mice following exposure to lanthanoids. Environmental Toxicology. 2014. Vol. 29. Iss. 4. pp. 64–73. DOI: 10.1002/tox.20773
7. GOST R 54597—2011/ISO/TR 27628:2007. Workplace atmospheres. Ultrafine, nanoparticle and nano-structured aerosols. Inhalation exposure characterization and assessment. Available at: https://docs.cntd.ru/document/1200089432 (accessed: November 14, 2022). (In Russ.).
8. On approval of the Methodology for conducting a special assessment of working conditions, the Classifier of harmful and (or) hazardous production factors, the form of a report on conducting a special assessment of working conditions and instructions for filling it out: Order of the Ministry of Labor of Russia dated January 24, 2014, № 33n. Available at: https://docs.cntd.ru/document/499072756 (accessed: November 14, 2022). (In Russ.).
9. MUK 4.1.2468—09. Control methods. Chemical factors. Measurement of mass concentrations of dust in the air of the working area of mining and non-metallic industries. Available at: https://docs.cntd.ru/document/898911988 (accessed: November 14, 2022). (In Russ.).
10. Ulanova T.S., Gileva O.V., Volkova M.V. Determination of micro and nanoparticles in the workplace area at the enterprises of mining industry. Analiz riska zdorovyu = Health Risk Analysis. 2015. № 4. pp. 44–49. (In Russ.).
11. Zaytseva N.V., Ulanova T.S., Zlobina A.V., Volkova M.V., Gileva M.I. Investigations into nanoscale particles as part of industrial aerosols and particulate matter in the air of working area. Toksikologicheskiy vestnik = Toxicological Bulletin. 2017. № 1 (142). pp. 20–26. (In Russ.). DOI: 10.36946/0869-7922-2017-1-20-26
12. Skalnyy A.V. Establishing the limits of the permissible content of chemical elements in the hair of children using centile scales. Vestnik Sankt-Peterburgskoy Gosudarstvennoy meditsinskoy akademii im. I.I. Mechnikova = Herald of North-Western State Medical University named after I.I. Mechnikov. 2002. Vol. 3. № 1–2. pp. 62–65. (In Russ.).
13. Skalnyy A.V. Reference values of chemical elements concentration in hair, obtained by means of ICP-AES method in ANO Centre for Biotic Medicine. Mikroelementy v meditsine = Trace Elements in Medicine. 2003. Vol. 4. № 1. pp. 55–56. (In Russ.).
14. Bowen H.J.M. Trace elements in biochemistry. New York: Academic Press, 1966. 241 p.
15. Haley T.J. Toxicity of rare earths. New Frontiers in Rare Earth Science and Applications. 1985. Vol. 1. pp. 679–683. DOI:10.1016/B978-0-12-767661-6.50164-8
16. Jennette K.W. Role of metals in carcinogenesis: Biochemistry and Metabolism. Environmental Health Perspectives. 1981. Vol. 40. pp. 233–252.
17. Hart M.M., Adamson R.H. Antitumor activity and toxicity of salts of inorganic group 3a metals: aluminum, gallium, indium, and thallium. Proceedings of the National Academy of Sciences of the United States of America. 1971. Vol. 68. № 7. pp. 1623–1626. DOI: 10.1073/pnas.68.7.1623