Effects of Particle Size of Coalmine Dusts in Experimental Anthraco-Silicosis: I. Influence of Size of Mineral Composition and Surface Properties of Dusts From Same Origin
| Autor: | A. Scharmann, G. Rinn, M. T. R. Reisner, L. Kühn, G. Strübel, W. Kriegseis |
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| Rok vydání: | 1988 |
| Předmět: |
business.industry
Chemistry Public Health Environmental and Occupational Health Mineralogy Context (language use) General Medicine respiratory system engineering.material medicine.disease complex mixtures respiratory tract diseases Deposition (aerosol physics) Silicosis Illite engineering medicine Kaolinite Coal Particle size business Quartz |
| Zdroj: | The Annals of Occupational Hygiene. |
| ISSN: | 1475-3162 |
| DOI: | 10.1093/annhyg/32.inhaled_particles_vi.585 |
| Popis: | To study the biological effects of particle size of coalmine dusts, five fractions of different size distribution were produced from each of four total airborne dust samples, and analysed. The maximum of the mass distribution of these fractions varied between 1 and 7.5 μm. The quartz content of the dusts increased clearly with coarser fractions, whereas the ash, kaolinite and illite contents decreased. Almost all quartz particles greater than 5 μm were intergrown with coal or other minerals, but with smaller particle size the percentage of non-intergrown quartz particles increased. Owing to the varying correlations between the relevant dust parameters, biological tests should always be evaluated in a multivariate context. Assessments of the specific harmfulness of dusts are only possible on the basis of a dust sampling method which takes account of the alveolar deposition of the dust in the human lungs. |
| Databáze: | OpenAIRE |
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