| Autor: |
Newton, Ashley, Adams, Karin, Serdar, Berrin, Dickinson, L. Miriam, Koehler, Kirsten |
| Předmět: |
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| Zdroj: |
Journal of Occupational & Environmental Hygiene; Feb2021, Vol. 18 Issue 2, p90-100, 11p, 1 Color Photograph, 1 Diagram, 3 Charts, 2 Graphs |
| Abstrakt: |
This study describes a comprehensive exposure assessment in a stainless steel welding facility, measuring personal inhalable PM and metals, time-resolved PM10 area metals, and the bioavailable fraction of area inhalable metals. Eighteen participants wore personal inhalable samplers for two, nonconsecutive shifts. Area inhalable samplers and a time-resolved PM10 X-ray fluorescence spectrometer were used in different work areas each sampling day. Inhalable and bioavailable metals were analyzed using inductively coupled plasma mass spectrometry (ICP-MS). Median exposures to chromium, nickel, and manganese across all measured shifts were 66 (range: 13–300) μg/m3, 29 (5.7–132) μg/m3, and 22 (1.5–119) μg/m3, respectively. Most exposure variation was seen between workers ( 0.79 < ICC < 0.55) , although cobalt and inhalable PM showed most variation within workers. Manganese was the most bioavailable metal from the inhalable size fraction (16 ± 3%), and chromium and nickel were 1.2 ± 0.08% and 2.6 ± 1.2% bioavailable, respectively. This comprehensive approach to welding-fume exposure assessment can allow for targeted approaches to controlling exposures based not only on individual measurements, but also on metal-specific measures and assessments of bioavailability. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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