佛山市某区企业车间空气中“三苯”检测结果

Detection Result of Benzene,Toluene and Xylene in the Air of Enterprise Workshops in Foshan City

目的通过分析佛山市某区近几年企业车间空气中苯、甲苯、二甲苯(三苯)浓度变化状况,了解其车间空气中"三苯"污染程度及整治效果。方法通过职业卫生学调查和现场空气浓度测定,对该项目职业病危害控制效果进行评价。结果"三苯"浓度超标率呈逐年下降趋势,差异均有统计学意义(P<0.01);苯的检出率亦逐年下降,以2006年最低(P<0.01);但2006—2007年度苯检出率为30.13%,仍在较高水平。结论近年来的防控措施较为有效,今后要进一步加强苯的职业危害控制。

[ Objective] To understand the pollution level of benzene, toluene and xylene in the workshop air and the renovation effect through the analysis of the changes in benzene, toluene and xylene concentrations in the air of the enterprise workshops in a district of Foshan City in recent years. [ Methods ] Occupational Hygienic investigation and field air concentration determination were carried out to evaluate the control effect against occupational hazards in this project. [ Results] The standard exceeding rate of benzene, toluene and xylene showed a decreasing trend, the difference was significant （ P 〈0.01 ） ; the detection rate of benzene also decreased annually with the lowest rate took palce in 2006 （ P 〈 0.01 ） , the detection rate of benzene was still in a high level （30.13%） during 2006-2007. [ Conclusion] The prevention and control measures are proved to be effective in recent years; occupational hazard control should be strengthened agonist benzene.