【作者】 王静； 朱利中；

【Author】 Jing Wang;Lizhong Zhu;Department of Environmental Science Zhejiang University;Zhejiang Province Environmental Monitoring Station;

【机构】 浙江大学环境科学系； 浙江省环境监测中心站；

【摘要】 采集、分析了交通干线环境空气中尘土、雨水及地表径流水PAHs的浓度,探讨PAHs的主要归宿。结果表明,尘土、雨水及地表径流水中PAHs的平均浓度分别为648ng/g,2157ng/L及3272ng/L。干沉降主要去除空气中4-5环PAHs,湿沉降对3环PAHs有很好的清除作用,干、湿沉降对2环PAHs无明显去除作用。空气是2环PAHs的主要载体,大部分3环和部分4环PAHs通过直接或间接途径进入水体或通过挥发作用滞留在空气中,尘土仍然是交通干线空气中部分4环和5环PAHs的主要贮存地。更多还原

【Abstract】 Samples of air dust,rain and runoff on arterial roads were collected to investigate the fates for different PAHs in air.It was showed that average PAHs concentrations in dust,rain and runoff were 648 ng/g,2157 ng/L and 3272 ng/L,respectively.PAHs of 4-5 rings were mostly removed by dry deposit while wet deposit contained much 3-ring PAHs.Road runoff may strengthen the 3-ring PAHs load of water.In this way,air,dust and water were the principal carriers for 2-ring,5-ring and 3-ring PAHs,respectively.更多还原