根据全国苯中毒普查方案,我们对银川地区8个单位接触混合苯作业的工人,以健康成人作对照,进行了化学组织法白细胞碱性磷酸酶(简称LAP)观察。对象与方法一、观察对象: 混合苯组:接触苯、甲苯、二甲苯者共119名;其中男52名,女67名,工龄不满1年～50年,平均10.36年。年龄20～70岁,平 According to the national program of benzene poisoning census, we conducted a survey of chemical tissue leucocyte alkaline phosphatase (LAP) for workers exposed to mixed benzene at eight units in Yinchuan, using healthy adults as control. Subjects and Methods 1.Objective: Mixed benzene group: a total of 119 workers were exposed to benzene, toluene and xylene. There were 52 males and 67 females, with a working age of less than 1 year to 50 years, an average of 10.36 years. Age 20 to 70 years old, flat