To study the effects of the medicine_food herbs on removing lead from workers exposed to lead.
研究药食两用中药预防性驱铅效果。
Objective To study the health state of workers exposed to tetraethyl lead petrol, and to find a surveillant index for them.
目的研究接触四乙基铅汽油作业人员健康状况，探讨四乙基铅汽油接触者的监护指标。
Methods The activity of urine NAG was determined by colorimetry with para-nitrophenol in 85 workers exposed to lead.
方法采用对硝基苯酚比色法对85名铅作业工人尿nag活性进行测定。
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