苯是国际癌症研究中心已确认的人类致癌物,职业性苯接触可引起白血病。目前在高浓度苯暴露与外周血细胞的研究方面基本得到一致结论:与对照组人群相比,接触苯工人的白细胞、红细胞、血小板下降。随着经济的发展,生产工艺的改进,含苯合剂逐渐被替代,大型工业企业中多数工作地点的苯及同系物的浓度降低到了职业接触限值以下,工人接触的大多数为低浓度混苯,近年有研究发现低浓度混苯暴露对人体健康也有影响。近年在对外周血的影响方面有不 Benzene is a confirmed human carcinogen by the International Agency for Research on Cancer. Occupational benzene exposure can cause leukemia. At present, the study on exposure to high concentrations of benzene and peripheral blood cells has basically been the same conclusion: compared with the control group, workers exposed to benzene white blood cells, red blood cells, platelets decreased. With the development of economy and improvement of production technology, the benzene-containing mixture is gradually replaced. The concentrations of benzene and homologues in most of the large-scale industrial enterprises are reduced below the occupational exposure limits. Most of the workers are exposed to low-concentration mixed benzene In recent years, studies have found that low concentrations of benzene mixed with benzene exposure also have an impact on human health. In recent years, there is no impact on peripheral blood