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生物接触指标[Biological Exposure Indices(BEI)]系指接触者对化学物质产生生物反应的警戒水平,或其组织、体液或呼出气中化学物质或其代谢物的警戒水平,而与化学物质进入人体的途径(吸入,摄入或经皮肤吸收)无关。BEI可看作是空气中化学
Biological Exposure Indices (BEI)] refers to the level of alertness of a contactor to a biological reaction of a chemical substance or the alert level of a chemical substance or its metabolites in a tissue, body fluid or exhaled breath, The route (inhalation, ingestion or transdermal absorption) has nothing to do with it. BEI can be seen as air chemistry