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美国ACGIH自1984年起开始制订毒物的生物接触指标(BEI),其后每年增订一部分、1987～1988年制订的BEI值及其说明已在《国外医学卫生学分册》1988年第6期上发表。其中包括已正式通过的和拟制订的20项毒物的BEI值,即苯、一氧化碳、乙苯、正乙烷、铅、酚、苯乙烯、甲苯、三氯乙烯、二甲苯、苯胺、镉、二硫化碳、二甲基甲酰胺、甲基氯仿、甲己酮、有机磷胆碱酯酶、对硫磷、五氯酚、过氯乙烯。
The United States ACGIH since 1984 to develop biological exposure indicators (BEI), then an annual increase of some, from 1987 to 1988 the BEI value and its description has been published in “foreign medical hygiene” Volume 6, 1988 . These include the BEI values of the 20 toxicants that have been formally adopted and proposed to be prepared, namely benzene, carbon monoxide, ethylbenzene, n-hexane, lead, phenol, styrene, toluene, trichlorethylene, xylene, aniline, cadmium, carbon disulfide , Dimethylformamide, methyl chloroform, methyl hexanone, organic phospholipid esterase, parathion, pentachlorophenol, perchlorethylene.