MEASUREMENTS OF ELECTRIC CHARGE FOR WORKPLACE AEROSOLS
MEASUREMENTS OF ELECTRIC CHARGE FOR WORKPLACE AEROSOLS
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DOI：
10.1093/annhyg/29.2.271
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发表时间：
1985-01-01
影响因子：
--
通讯作者：
JONES, AD
中科院分区：
文献类型：
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作者：
JOHNSTON, AM;VINCENT, JH;JONES, AD
本文回顾了有关测量工作场所空气中粉尘所带电荷的工作，并报道了我们自己最近在13个工厂、两个采石场和一个煤矿的测量结果。测量方法涉及使用光学颗粒计数器来确定穿透“静电淘析器”的给定尺寸范围内的颗粒的比例。结果表明：（a）不同工厂之间和同一工厂内不同工作场所之间的颗粒电荷水平差异显著;（B）在许多情况下，颗粒电荷水平与实验室产生的粉尘测量值相当;（c）在所有检查的情况下，颗粒电荷在正负极之间大致均匀分布。特别是关于电荷水平对暴露工人所接受的粉尘的肺剂量的影响。
Previous work relating to measurements of electric charges carried by airborne dusts in workplaces is reviewed and the results of our own recent measurements in 13 factories, two quarries and a coal mine are reported. The method of measurement involved using an optical particle counter to determine the proportions of particles in given size ranges penetrating through an ‘electrostatic elutriator’. They show that (a) particle charge levels varied markedly between factories and between different workplaces within the same factory, (b) charge levels in many instances were comparable with those measured for laboratory-generated dusts and (c) charging in all the cases examined was approximately uniformly distributed between positive and negative polarity.We conclude by discussing the relevance of the workplace results in relation to occupational hygiene, with particular reference to the effects of the electric charge levels on the lung dose of dust received by exposed workers.