长期接触较高浓度苯常可发生慢性中毒,主要表现为骨髓造血系统损伤,白细胞减少,再生障碍性贫血、白血病。近年来国内外学者对苯中毒的发病机制进行了大量研究,主要集中在长期低浓度接触苯时,对人体代谢、造血及遗传机能的影响。从细胞水平看,苯的慢性毒理作用,首先表现在 Long-term exposure to higher concentrations of benzene can occur chronic poisoning, mainly as bone marrow hematopoietic system injury, leukopenia, aplastic anemia, leukemia. In recent years, scholars at home and abroad have made a great deal of research on the pathogenesis of benzene poisoning, mainly focusing on the influence on human metabolism, hematopoiesis and hereditary function when exposed to benzene for a long time under low concentration. From the cellular level, the chronic toxicological effects of benzene, first manifested in