鉛含有粉じんの特性

概要

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Dusts containing lead compounds frequently cause poisoning. It is suggested that the poisonous characters are realised differently by the size of the dust. Considering this, we classified the suspending dust arising from the workshop, where lead compounds were being handled, into four size fractions by a cascade centripeter. The content of lead was determined by the atomic absorption method, acetyleneair flame being made use of. The findings were as follos: 1) At the place where the primary dust developed, particles larger than 14 microns in diameter gave relatively higher percentage of lead content. 2) At the place where the secondary dust developed, particles less than 4 microns in diameter and larger than 14 microns in diameter gave higher percentages of lead content. 3) At both places, lead content was low in the case of particles of 4-14 microns, but their amounts were higher.
社団法人日本産業衛生学会の論文
1969-02-20