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通过现场调查、临床体检和实验测定的“班前”呼出苯浓度与接触苯浓度之比和高、中、低苯浓度接触者的呼出苯的毒物动力学观察结果,结合工人体检的健康状况和其它生物学监测指标间的关系,并参照国外制订呼出苯生物阈限值的文献报道;根据我国现行苯的最高容许浓度(40mg/m~3),建议职业性苯接触者“班前”末端呼出气中苯的生物接触限值为0.40μg/L(0.12ppm)。
Through field investigation, clinical examination and experimental determination of the “pre-class” expired benzene concentration and exposure to benzene concentration ratio and high, medium and low benzene concentration contact exhaled benzene toxicokinetic results, combined with the workers health examination and According to the highest allowable concentration of benzene (40mg / m ~ 3) in our country, it is suggested that the end of “class before” of occupational benzene contact The limit of exposure to benzene in exhaled air is 0.40 μg / L (0.12 ppm).