Spatial enrichment assessment, source identification and health risks of potentially toxic elements in surface sediments, Central Asian countries
文献类型：期刊论文
| 作者 | Wang, Jingzhong; Wu, Jinglu; Zhan, Shuie; Jin, Miao; Zhou, Jianchao; Shen, Beibei; Zeng, Haiao |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2021 |
| 卷号 | 21期号:12页码:3906-3916 |
| 英文摘要 | Purpose Potentially toxic elements (PTEs), particularly metallic elements, are some of the most dangerous pollutants found in surface sediments due to their toxicity and persistence. Given the contamination-related issues for sediments in Central Asian countries (CACs), a combination of risk assessment and source apportionment was used in characterizing the pollution sources and source-specific risks of metallic elements in the sediments of CACs. Materials and methods Surface sediment samples collected from 254 sites across the CACs were analysed for PTEs. The calculation of enrichment factor (EF) and the assessments of health risks were devoted to identifying contamination and risk characteristics, including geomorphic- and watershed-driven variability. Multivariate statistical analyses were applied to quantitatively identify contamination sources. Results and discussion The results suggested that Cr, Cu and Ni were minimally enriched, Pb was moderately enriched, and Zn was significantly enriched. Interestingly, the EF of Pb was considerably higher in the northwest plain of the CAC region, but that of Zn was distributed across the study area. Source apportionment indicated that natural and anthropogenic sources accounted for 40.42% and 59.58% of the total contamination, respectively. Overall, the non-carcinogenic risks caused by PTEs were acceptable, but Cr and Pb exhibited higher non-carcinogenic effects in the Caspian Sea-Ural River and Ishim River regions. Moreover, fuel combustion, atmospheric deposition and industrial activities made higher contributions than other sources to the ecological risk of PTEs in the CACs. Conclusions This study will advance our knowledge of spatial differences, contamination risks and source identification for PTEs in sediments and provide a scientific basis for policy makers to design environmental strategies in the CACs. |
| 源URL | [http://159.226.73.51/handle/332005/20428]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Wang, Jingzhong,Wu, Jinglu,Zhan, Shuie,et al. Spatial enrichment assessment, source identification and health risks of potentially toxic elements in surface sediments, Central Asian countries[J]. JOURNAL OF SOILS AND SEDIMENTS,2021,21(12):3906-3916. |
| APA | Wang, Jingzhong.,Wu, Jinglu.,Zhan, Shuie.,Jin, Miao.,Zhou, Jianchao.,...&Zeng, Haiao.(2021).Spatial enrichment assessment, source identification and health risks of potentially toxic elements in surface sediments, Central Asian countries.JOURNAL OF SOILS AND SEDIMENTS,21(12),3906-3916. |
| MLA | Wang, Jingzhong,et al."Spatial enrichment assessment, source identification and health risks of potentially toxic elements in surface sediments, Central Asian countries".JOURNAL OF SOILS AND SEDIMENTS 21.12(2021):3906-3916. |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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