Abstract Results of research on the hazard posed by polycyclic aromatic hydrocarbons contained in the dusts emitted from motor vehicle braking systems have been presented. The polycyclic aromatic hydrocarbons (PAHs) constitute a group of chemical compounds that pose a serious danger to the human health, chiefly because of their carcinogenic properties. Investigations into the issue of environmental pollution with polycyclic aromatic hydrocarbons generated by motor vehicle traffic were carried out in connection with the work being done at PIMOT on systems to reduce dust emission from motor vehicle braking systems. The investigations included determination of PAH contents of the dust emitted from vehicle braking systems as well as the PAH concentrations in the indoor air in a room with the stand for testing dust emissions from braking systems and in the duct to carry away gases from that room. Moreover, the PAH contents of soil were measured in the context of location of the soil sampling points in relation to traffic routes. The PAH contents were measured in Warsaw and in Zabrze. The investigation results confirmed that PAHs considered as being most harmful to the human health due to their carcinogenic properties were actually present in the dusts emitted from braking systems. The PAH contents of soil were found to be very sensitive to the location of the soil sampling points in relation to traffic routes and this is a confirmation of the thesis that motor traffic is an important source of environmental pollution with polycyclic aromatic hydrocarbons.

中文翻译：

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机动车辆制动系统排放的粉尘中所含的多环芳烃造成的危害

摘要 介绍了机动车辆制动系统排放的粉尘中所含多环芳烃危害的研究结果。多环芳烃 (PAH) 是一组对人类健康构成严重威胁的化合物，主要是因为它们具有致癌特性。对机动车交通产生的多环芳烃污染环境问题的调查是结合 PIMOT 正在开展的减少机动车制动系统粉尘排放的系统工作进行的。调查包括确定车辆制动系统排放的粉尘的多环芳烃含量以及室内空气中的多环芳烃浓度，该室内设有用于测试制动系统粉尘排放的支架，以及从该房间带走气体的管道中的多环芳烃浓度。此外，土壤中的多环芳烃含量是在与交通路线相关的土壤采样点位置的背景下测量的。PAH 含量在华沙和扎布热进行了测量。调查结果证实，由于其致癌特性而被认为对人体健康最有害的多环芳烃实际上存在于制动系统排放的粉尘中。