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石棉对人体可产生不可逆转的健康损害。汽车摩擦制品(制动摩擦衬片和离合器摩擦片)的主要材料是石棉。本文主要调查了汽车摩擦材料加工作业工人对石棉纤维的个体接触量。对象及方法:对象为三家(A、B、C)汽车摩擦材料生产公司的23名作业工人。测定采用滤膜法,电镜样品是用丙酮蒸气处理制成薄膜,在电子显微镜下(放大倍数为5千～2.5万倍)计数,长度和直径之比>3:1的纤维数。结果显示:(1)石棉纤维个体接触量的平
Asbestos can cause irreversible health damage to the human body. The main material for automotive friction products (brake linings and clutch plates) is asbestos. This paper investigates the individual exposure of asbestos fibers to workers working in automotive friction materials. Subjects and Methods: Twenty-three workers were employed by three (A, B, C) automotive friction materials manufacturing companies. Determination of the use of filter method, electron microscopy sample is acetone vapor treatment into a thin film, under the electron microscope (magnification of 5 to 25,000 times) count, length and diameter ratio> 3: 1 fiber number. The results showed that: (1) asbestos fibers individual exposure level