Characterizing ecological risk for polycyclic aromatic hydrocarbons in water from Lake Taihu, China

被引：22

作者：

Guo, Guanghui ^{[2
,3
]}

Wu, Fengchang ^{[1
]}

He, Hongping ^{[3
]}

Zhang, Ruiqing ^{[2
,3
]}

Feng, Chenglian ^{[1
]}

Li, Huixian ^{[1
]}

Chang, Ming ^{[1
]}

机构：

[1] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2012年 / 184卷 / 11期

基金：

美国国家科学基金会;

关键词：

Polycyclic aromatic hydrocarbons (PAHs); Probabilistic risk assessment; Lake Taihu; China; SEDIMENT-ASSOCIATED PYRENE; SUSPENDED PARTICULATE MATTER; SCREENING LEVEL; SURFACE WATERS; PAH DISTRIBUTIONS; MEILIANG BAY; TOXICITY; RIVER; TOXICOKINETICS; COPPER;

D O I：

10.1007/s10661-011-2460-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Lake Taihu provides vital ecological services for humans in China; it receives a great deal of attention regarding its ecological and environmental conditions. In this study, the ecological risks of eight individual polycyclic aromatic hydrocarbons (PAHs) in water were assessed using probabilistic distributions of the hazard quotient based on Monte Carlo simulation. The results show that the 95th percentile of the hazard quotients ranged from 0.00074 to 2.831, and the ecological risk of Flua was highest, followed by, in descending order of risk, B[a]P > Pyr > Ant > Phe > Flu > Ace > Chr. The probabilities of hazard quotients exceeding a decision criteria of 0.3 were 18.09%, 6.51%, 3.76%, and 2.85% for Flua, B[a]P, Pyr, and Ant, respectively, indicating their potential ecological risks to aquatic organisms. The spatial distribution of hazard quotients for these four individual PAHs with potential ecological risk were obtained using Geographic Information System (GIS), and similar spatial distribution patterns were also observed in the lake. The highest ecological risks of these four individual PAHs to aquatic organisms were found in Meiliang Bay, followed by Gonghu Bay and Xukou Bay. The uncertainty within the ecological risk assessment was also discussed.

引用

页码：6815 / 6825

页数：11

共 48 条

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