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1986～1990年对我省5家乡镇石棉厂进行了以下方面的调查研究:1.现场劳动卫生学调查:(1)粉尘浓度测定(滤膜重量法及石棉纤维计数法),(2)粉尘中硅酸盐及游离二氧化硅含量测定;2.接触石棉人员健康检查;3.防尘措施调研。 作业场所空气中粉尘污染严重,重量法测定除并线工种外,其余工种的粉尘浓度都超际;石棉纤维计数测定各工种粉尘浓度都超过2f/ml,作业场所新鲜
From 1986 to 1990, five villages and towns asbestos factories in our province were investigated in the following aspects: 1. Investigation of on-site labor hygiene: (1) determination of dust concentration (membrane gravimetric method and asbestos fiber counting method), (2) dust Silicate and free silica content determination; 2. Asbestos personnel health check; 3. Dust-proof measures research. Dust concentration in the air at workplaces is very serious. The gravimetric determination of all kinds of dust except for line work by gravimetric method is beyond the limit. The asbestos fiber count is more than 2f / ml for all kinds of work, and the working place is fresh