【摘要】 [目的]了解唐山市家用车车厢内空气苯系物及甲醛污染状况,为相关防制政策的制定提供依据。[方法]选择不同车龄的122辆家用车,分别测定车厢内空气中苯、甲苯、二甲苯及甲醛的浓度,同时通过问卷调查获得车型、车龄等基本信息。[结果]车内苯、甲苯、二甲苯及甲醛浓度的超标率分别为14.8%、26.2%、20.5%,58.2%。车龄在6个月之内的车辆苯、甲苯、二甲苯及甲醛的浓度较高,超标率亦较高,以后逐渐降低。车厢内空气苯、甲苯、二甲苯浓度分别受车内吸附剂、车辆档次及座椅材质的影响,经秩和检验,差异具有统计学意义。车辆档次、有无使用吸附剂、座椅材质以及是否在车内吸烟在本次研究中未显示对车内甲醛浓度产生影响。[结论]唐山市家用车车厢内普遍存在苯系物及甲醛污染,车辆的车龄、车内吸附剂的使用、车辆档次及座椅材质对车内苯系物浓度有影响。更多还原

【Abstract】 [Objective] To understand the situation of benzene series compounds and formaldehyde in air pollution of domestic viechles in Tangshan City and provide basis for formulating policies of preventing and controlling benzene series compounds and formaldehyde related air pollution. [Methods] A total of 122 domestic viechleswith various serving years were selected and the concentrations of benzene, toluene, xylene and formaldehyde were detected. The basic information situation oncar model, serving frequency, etc were collected using a questionnaire. [Results] The rate of benzene, toluene, xylene and formaldehyde exceeding current governmental regulation were 14.8%, 26.2%, 20.5%, 58.2% respectively. Higher concentration and higher exceeded rates of benzene, toluene, xylene and formaldehyde in the cars serving within six months were found. The concentration of benzene series compounds and formaldehyde decreased gradually after six months. The concentration of benzene, toluene and xylene were affected by using adsorbent, cars grade and seats material respectively, and the differences were significant when tested by rank sum test. The formaldehyde concentrations did not affected by using adsorbents, vehicle model, seats material and smoking habits in car. [Conclusion] Benzene series compounds and formaldehyde in air pollution of domestic cars were commonly detected in Tangshan City. The concentration of benzene series compounds in domestic cars were associated with serving time, using adsorbent, cars grade and seats material.更多还原