Identifying sediment-associated toxicity in rivers affected by multiple pollutants from the contaminant bioavailability
文献类型：期刊论文
| 作者 | Zhang, Chao; Shan, Baoqing; Tang, Wenzhong ; Wang, Can; Zhang, Lixiao
|
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2019-04-30 |
| 卷号 | 171页码:84-91 |
| 关键词 | Heavy metals PAHs Non-ionic ammonia Toxic units Acute toxicity Multiple pollutants |
| ISSN号 | 0147-6513 |
| 英文摘要 | In 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. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/43091]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：生态环境研究中心
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