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在对劳动、生活环境中有毒物质致人体危害问题进行调查时,检测人体接触量是必不可少的一环,以往大都采用瞬时平均浓度值或计算时间加权浓度等来表示。这样做比较麻烦,且不能确切反映每个人的实际接触量,因此目前国内外都注重于研制个体采样器。 本项研究主要根据Fick第一定律,利用渗透扩散原理,设计了无需动力,体积小、重量轻、携带方便、能连续检测,集中分析的个体采样器。对三氯乙烯、苯、甲苯、二甲苯、醋酸乙酯、四氯化碳、二氯乙烷等有机蒸气的采样进行了研究。
In the labor and living environment toxic substances to the human body to investigate the problem, the detection of human exposure is an essential part of the past most of the use of instantaneous mean concentration or time-weighted concentration to represent. This is more troublesome, and can not accurately reflect the actual amount of contact each person, so at home and abroad are focused on the development of individual samplers. According to Fick’s first law, this study mainly uses the principle of osmotic diffusion to design individual samplers without power, small size, light weight, easy to carry, continuous detection and centralized analysis. Samples of organic vapors such as trichlorethylene, benzene, toluene, xylene, ethyl acetate, carbon tetrachloride and dichloroethane were studied.