Occurrence and ecological risk of PAHs in urban road runoff in Beijing

被引：0
作者：
Zhang, Xiaoran [1 ]
Ji, Hongming [1 ]
Yan, Lei [1 ,2 ]
Liu, Junfeng [3 ]
Wang, Shiyu [4 ]
Zhang, Ziyang [1 ]
Tan, Chaohong [1 ]
Li, Haiyan [1 ]
Hu, Yuansheng [5 ]
机构：
[1] Beijing Univ Civil Engn & Architecture, Key Lab Urban Stormwater Syst & Water Environm, Minist Educ, Beijing 102616, Peoples R China
[2] Beijing Drainage Grp Co Ltd, Beijing 100044, Peoples R China
[3] Beijing Vocat Coll Agr, Dept Water Conservancy & Civil Engn, Beijing 102442, Peoples R China
[4] Beijing Municipal Ecol & Environm Monitoring Ctr, Beijing 100048, Peoples R China
[5] Univ Coll Dublin, UCD Dooge Ctr Water Resources Res, Sch Civil Engn, Dublin D04 V1W8, Ireland
来源：
WATER SCIENCE AND TECHNOLOGY | 2024年 / 89卷 / 04期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
first flush; occurrence; PAHs; risk assessment; road runoff; POLYCYCLIC AROMATIC-HYDROCARBONS; RIVER;
D O I：
10.2166/wst.2024.035
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The occurrence and ecological risks of 16 polycyclic aromatic hydrocarbons (PAHs) in different types of urban road runoff in Beijing during two typical rainfall events were studied. The average concentration of PAHs in road runoff particulate was in the order of Guanyinqiao Road (ring road, 15,175 ng/L) > Huayuanqiao Road (primary road, 4,792 ng/L) > Dongcheng Alley (alley, 4,774 ng/L) > Nansihuan Viaduct (viaduct, 770 ng/L), much higher than dissolved PAHs. The total concentration of n-ary sumation 16PAHs decreased with runoff scouring. Rainfall conditions and the accumulation of PAHs in the early rainfall period show a significant impact on PAH pollution. The event mean concentration range of PAHs is 674-21,596 ng/L, following in the order of ring road > primary road > alley > viaduct. The proportion of four-ring PAHs was the highest. The first flush effect of PAHs is found in both rainfall events, and the effect of different ring PAHs is relatively similar. The content of PAHs is positively correlated with the amount of total organic carbon and suspended substance in runoff (r2> 0.72). The ecological risk assessment indicated that PAHs in road runoff except viaduct road corresponded to high risk.
引用
收藏
页码：945 / 961
页数：17
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