Identification of toxicity factors and causal analysis of toxicity in surface sediments from Liaohe river basin, Northeast China using an effect guidance strategy
文献类型：期刊论文
| 作者 | Yan, Liang; Bu, Jihong; Zhou, Yiqi ; Zhao, Gaofeng; Zha, Jinmiao
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| 刊名 | ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 207期号:0页码:112153 |
| 关键词 | HEAVY-METALS ORGANIC POLLUTANTS RISK-ASSESSMENT PROTECTED AREA CONTAMINATION AMMONIA COMPLEMENTARY ECOTOXICITY PESTICIDES BIOASSAYS |
| ISSN号 | 0013-9351 |
| 英文摘要 | Sediments play a pivotal role in maintaining the aquatic ecological status of rivers. However, the determination of the key toxicants that consider the combined effects of all sediment-related contaminants are still challenging and necessary for an appropriate sediment risk assessment. The effects of sediments on aquatic organisms have been reported in Liaohe River, but their key toxicity factors are not well known. To determine the key toxicity factors, twenty-six surface sediment samples from Liaohe River tributaries in Northeast China were collected. Acute toxicity test of midge larvae results showed that 6 of 26 tributaries had obvious toxic effects, with survival rates of 37%-57% (p < 0.05). The masking test showed that the main pollutants in the surface sediments of T7 and T16 were metals, that of T8 was an organic pollutant, those of T19 and T26 were organic pollutants and ammonia, and those of T17 were heavy metal and ammonia. Chemical analysis showed that the relatively high concentrations of ammonia were only presented in surface sediments of T17, T19, and T26, with PTU of 1.5, 1.2 and 1.1, respectively, whereas heavy metals were markedly high in surface sediments from T7 and T16, with PTU of 0.92 and 0.61, respectively. Interestingly, the observed toxicity in surface sediments agreed with the toxicity predicted by chemical analysis Moreover, the significant correlation between the survival and volume ratio of the sediment and overlying water confirmed ammonia nitrogen was key toxicity factor in T17, T19, and T26, whereas Cu was the key toxicity factor in T7 that cause the biological toxicity. In conclusion, the major toxic factors of ammonia and copper in the sediments were identified. Moreover, our study suggested that effect guidance strategy was an effective method for sediment quality assessment. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47858]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 通讯作者 | Zha, Jinmiao |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, 18 Shuangqing Rd, Beijing 100049, Peoples R China 2.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, 12 South Zhongguancun Ave, Beijing 100081, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Liang,Bu, Jihong,Zhou, Yiqi,et al. Identification of toxicity factors and causal analysis of toxicity in surface sediments from Liaohe river basin, Northeast China using an effect guidance strategy[J]. ENVIRONMENTAL RESEARCH,2022,207(0):112153. |
| APA | Yan, Liang,Bu, Jihong,Zhou, Yiqi,Zhao, Gaofeng,&Zha, Jinmiao.(2022).Identification of toxicity factors and causal analysis of toxicity in surface sediments from Liaohe river basin, Northeast China using an effect guidance strategy.ENVIRONMENTAL RESEARCH,207(0),112153. |
| MLA | Yan, Liang,et al."Identification of toxicity factors and causal analysis of toxicity in surface sediments from Liaohe river basin, Northeast China using an effect guidance strategy".ENVIRONMENTAL RESEARCH 207.0(2022):112153. |
入库方式： OAI收割
来源：生态环境研究中心
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