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Identifying sediment-associated toxicity in rivers affected by multiple pollutants from the contaminant bioavailability
Zhang, Chao; Shan, Baoqing; Tang, Wenzhong; Wang, Can; Zhang, Lixiao
2019-04-30
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
Volume171Pages:84-91
AbstractIn this study, we estimated the toxicity risks from river sediments that were affected by multiple pollutants in the Haihe River Basin. We used a range of methods to determine the concentrations, bioavailability, and toxicity of a range of metals and contaminants in sediments and sediment porewater and then assessed the ecological risks and toxicity using various multivariate statistical approaches. We found that more than 70% of the samples were toxic. The concentrations of non-ionic ammonia (0.168-9.295 mg L-1) were generally high in the sediment porewater, while the concentrations of bioavailable chromium (Cr) and polycyclic aromatic hydrocarbons (PAHs) were also high in the porewater samples from NW01 and NW02, respectively. We used the toxic unit (TU) approach, based on the bioavailable pollutant concentrations, to determine the toxicity of PAHs, heavy metals, and non-ionic ammonia in river sediments and sediment porewater. We found that non-ionic ammonia was the main source of toxicity for Daphnia magna, and that Cr and zinc were toxic for Pseudokirchneriella subcapitata and Chironomus dilutus. By combining various indexes, we identified the main contributors to the toxicity in sediments collected from rivers affected by multiple pollutants.
Department环境水质学国家重点实验室
KeywordHeavy metals PAHs Non-ionic ammonia Toxic units Acute toxicity Multiple pollutants
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43091
Collection环境水质学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
4.Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Chao,Shan, Baoqing,Tang, Wenzhong,et al. Identifying sediment-associated toxicity in rivers affected by multiple pollutants from the contaminant bioavailability[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2019,171:84-91.
APA Zhang, Chao,Shan, Baoqing,Tang, Wenzhong,Wang, Can,&Zhang, Lixiao.(2019).Identifying sediment-associated toxicity in rivers affected by multiple pollutants from the contaminant bioavailability.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,171,84-91.
MLA Zhang, Chao,et al."Identifying sediment-associated toxicity in rivers affected by multiple pollutants from the contaminant bioavailability".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 171(2019):84-91.
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