Comprehensive hygienic assessment of the dust factor in the asbestos cement manufacturing industry
https://doi.org/10.51523/2708-6011.2021-18-2-17
Abstract
Objective: to conduct comprehensive hygienic studies of the dust factor in the asbestos cement manufacturing industry and to determine the presence of a relationship between the content level of respirable fibres and the mass concentration of suspended particles in order to actualize the methodology of the assessment of the air of a working area containing mineral fibrous aerosols.
Materials and methods. The mass concentrations of dust and the content level of respirable fibres in the air of the working area and the morphological characteristics of dust aerosol were analyzed.
Results. The content of dust in the air of the working area in terms of the mass measurements of suspended particles does not exceed the hygienic standards and ranges from 0.20 ± 0.004 mg/m3 to 1.47 ± 0.085 mg/m3, and the content level of respirable fibres is from 0.20 ± 0.044 f/cm3 to 1.13 ± 0.204 f/cm3. The presence of a positive correlation of moderate strength between the content level of respirable fibres and the mass concentration of suspended particles has been found.
Conclusion. The microscopy of the preparations of dust samples makes it possible to determine a morphological picture which is characteristic for various stages of the technological process. There is a positive correlation of moderate strength between the content level of respirable fibres in the air of the working area and the concentration of suspended particles. However, the obtained patterns of dependence are capable of accounting up to 49.3 % of the variations of respirable fibres on the basis of the mass concentration of suspended particles, which does not make it possible to use them for the conversion of the values.
About the Author
K. A. Hutsich
Scientific Practical Centre of Hygiene
Belarus
Belarus
Katsiaryna A. Hutsich, Head of the Occupational Hygiene Laboratory
Minsk
References
1. Wagner GR. Screening and surveillance of workers exposed to mineral dusts. Geneva: WHO; 1996. 68 p.
2. Mandrioli D, Schlünssen V, Ádám B, Cohen RA, Colosio C, Chen W et al. WHO/ILO work-related burden of disease and injury: Protocol for systematic reviews of occupational exposure to dusts and/or fibres and of the effect of occupational exposure to dusts and/or fibres on pneumoconiosis. Environ Int. 2018;119:174-85. https://doi.org/10.1016/j.envint.2018.06.005
3. Aleksynska M, Berg J, Foden D, Johnston H, Parent-Thirion A, Vanderleyden J. Working conditions in a global perspective. Luxembourg: Publications Office of the European Union; Geneva: International Labour Organization; 2019. 196 р.
4. Furuya S, Chimed-OchirO, Takahashi K, David A, Takala J. Global asbestos disaster. Int J Environ Res Public Health. 2018;15(5):1000. https://doi.org/10.3390/ijerph15051000
5. Gualtieri AF. Towards a quantitative model to predict the toxicity/pathogenicity potential of mineral fibers. Toxicol Appl Pharmac. 2018;361:89-98. https://doi.org/10.1016/j.taap.2018.05.012
6. Guidelines No 4436-87. Measurement of aerosol concentration with predominantly fibrogenic action: approved by the USSR Ministry of Health on November 18, 1987. Moscow, RF; 1988. 28 p. (in Russ.)
7. Determination of airborne fiber number concentrations. A recommended method by phase-contrast optical microscopy (membrane filter method). Geneva; 1997. 53 р.
8. Asbestos and other fibers by PCM: мethod 7400. In: National Institute for Occupational Safety and Health (NIOSH). NIOSH Manual of Analytical Methods. 5th ed. [Electronic resource]. [Date of access: 2020 December 17]. Available from: https://www.cdc.gov/niosh/nmam/pdf/7400.pdf
9. MDHS 59/2. Machine-made fibres. Airborne number concentration and classification by phase contrast light microscopy. In: Methods for the Determination of Hazardous Substances: guidance [Electronic resource]. [Date of access: 2020 December 4]. Available from: http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs59-2.pdf
10. MVI M–1–2006. Methods for measuring the counting concentration of fibers in the atmospheric air: approved by the General Director of JSC «Scientific Research and the Design Institute for the Asbestos Industry». Asbest; 2006. 23 p. (in Russ.)
Review
For citations:
Hutsich K.A. Comprehensive hygienic assessment of the dust factor in the asbestos cement manufacturing industry. Health and Ecology Issues. 2021;18(2):119-125. (In Russ.) https://doi.org/10.51523/2708-6011.2021-18-2-17
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