Resumo

LONGAS-RESTREPO, Alexander  e  TORO-MARIN, Jhon Édison. Proposal for the risk analysis for silica exposure based on the respirable fraction dust. Dyna rev.fac.nac.minas [online]. 2020, vol.87, n.212, pp.129-133. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v87n212.79882.

Crystalline silica is a natural chemical compound present in rocks, sand and soil. In industry, it is found in chemical products: cement, bricks, concrete... To measure the amount of silica a worker breathes, a dust sample must be taken from the respirable fraction. Due to the cost of chemical analysis of this fraction against silica, whose proportion is approximately 1:25, it is important to establish a methodology that allows an approximation of the risk calculation related to silica exposure, in order to reduce it. According to this, 63 data (2016-2019) were analysed, corresponding to measurements of the aforementioned dust with emphasis on silica belonging to industrial processes. The data were then analysed, and a statistically acceptable relationship was found for different industrial processes, resulting in a mathematical equation to determine the amount of silica, as a function of the amount of respirable fraction, with a statistical acceptance level.

Palavras-chave : silica, respirable fraction; exposure; similar exposure groups (SEG); TLV.

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