家用车内空气苯系物污染状况及健康风险分析

Concentrations and risk assessment of selected BTEX in private cars

调查研究了家用车内空气中苯和二甲苯的污染状况,并对其造成的健康风险进行了分析.研究发现,家用车内空气普遍存在苯系物浓度超标的现象,汽车的车龄、静态封闭时间对车内空气质量有一定影响.车内空气中苯污染对男性和女性驾乘人员造成的致癌风险分别为2.34×10-5和2.62×10-5,明显高于美国EPA对致癌物的控制标准.车内空气中苯和二甲苯造成的非致癌健康风险分别为5.23和1.72,会对人体健康产生显著影响.因此,为了保障汽车驾乘人员的身体健康,有必要采取适当的措施改善车内空气的质量.

Along with the rapid increase of private cars,the quality of in-car air was gaining more and more concern in China.It was found in this research that the BTEX concentration of in-car air widely exceeded the indoor air quality standard,and the age and the closed period of a car would remarkably influence the quality of in-car air.The life time carcinogenic risks for male and female passengers(drivers) were 2.34×10-5and 2.62×10-5,respectively,which is way above the limit set by USEPA.The life time noncarcinog...