隧道路面沥青摊铺过程空气中TSP和多环芳烃污染研究

分析了隧道沥青摊铺过程环境空气中的TSP及多环芳烃质量浓度。TSP用膜法,中流量采样器采样15 min,重量法分析;超声波萃取,高效液相色法分析多环芳烃。结果表明,摊铺机周围空气中TSP超过8 mg/m3,道路空气中TSP超过3 mg/m3;环境空气中苊烯等12种多环芳烃均有检出,苊烯和艹屈质量浓度较高,苯并a]芘和二苯并a,h]蒽质量浓度较低。苯并a]蒽、苯并a]芘和二苯并a,h]蒽超标,对人体健康危害较大。建议加强相关行业PAHs的排放水平及其健康风险研究,制定相关限值标准和沥青摊铺过程环境空气的沥青烟监测方法标准。

Study on TSP and Air PAHs Pollution for AsphaltPavingin Tunnel

Both the total suspended particle（TSP） and polycyclic aromatic hydrocarbons（PAHs） concentration were analyzed in the air of highway tunnel at asphalt paving.The mid-vol samplers were used to collect TSP on membranes for 15 min,and TSP was weighted by Gravimetric method.PAHs on the membranes were analyzed by HPLC with ultrasonic extraction.The results showed that TSP concentration in the air near asphalt spreader and the paved road were over 8 mg/m3 and 3 mg/m3 respectively.Twelve kinds of PAHs in the air were detected to find high concentration of acenaphthylene and chrysene,low concentration of benzoa]pyrene and dibenzanthracene.Concentration of benzoa]anthracene,benzoa]pyrene and dibenzanthracene in excess of the limit value brought about severe harm to human health.Suggestion was made to strengthen study on emission level of PAHs in related industries and health risks,and to set standard limits and air environmental monitoring method for asphalt paving process.