Occupational exposure to mercury in recycling cooperatives from the metropolitan region of são paulo, Brazil

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Abstract

The occupational exposure to mercury (Hg) was assessed in four cooperatives of recyclable materials by air sampling in nine areas (recyclable materials pile, scale, baling press machine, e-waste room, cafeteria, office, forklift, conveyor belt, and outside patio). Of the 83 samples, only 14.5% showed concentrations above the limit of quantification (LOQ) while 53% were between the LOD (limit of detection) and LOQ. Most values > LOQ occurred at Cooperative A, at the pile (0.032 µg.m-3) and scale (0.029 µg.m-3). The higher values recorded at this Cooperative might be associated with the unloading of fluorescent lamps on the day of sampling. In cooperative B, the concentration was 0.033 µg.m-3 on the conveyor belt and < 0.003 µg.m-3 in other areas. In cooperatives C and D, all samples showed values < 0.007 µg.m-3. The Hg concentrations were low in areas of e-waste handling and storage, probably due to the small amount of material and way of processing. The results were below the occupational reference values, showing that the workers are not exposed to Hg. However, the sampling design might not have been comprehensive due to the discontinuity of the e-waste processing and the unpredictable occurrence of fluorescent lamps mixed with recyclable materials.

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APA

Gouveia, N., Buzzo, M. L., Grossi, M. G. D. L., Souza, G. F. D., & Muto, E. Y. (2019). Occupational exposure to mercury in recycling cooperatives from the metropolitan region of são paulo, Brazil. Ciencia e Saude Coletiva, 24(4), 1517–1526. https://doi.org/10.1590/1413-81232018244.01332017

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