Mercury contamination in the riparian ecosystem during the reservoir discharging regulated by a mega dam
文献类型：期刊论文
| 作者 | Mir, Yaseen2,3; Wu, Shengjun2 ; Ma, Maohua2; Ran, Yiguo2,3; Zhu, Kai2; Mangwandi, Chirangano1; Mirza, Zakaria Ahmed2
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| 刊名 | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
 |
| 出版日期 | 2022-01-28 |
| 页码 | 18 |
| ISSN号 | 0269-4042 |
| 关键词 | Environmental contamination THg MeHg Sediment Cynodondactylon |
| DOI | 10.1007/s10653-022-01205-z |
| 通讯作者 | Mirza, Zakaria Ahmed(zmirzaucl@outlook.com) |
| 英文摘要 | Mercury (Hg) is extremely poisonous and can be absorbed through touch, inhalation, or consumption. In the living environment, Hg in contaminated sediment can be transferred into grass by the direct absorption through the roots or shoots. The intake of Hg due to Hg emissions may pose a threat to living bodies especially to human beings. The present study aims to provide a novel insight about total mercury (THg) and methyl mercury (MeHg) in a riparian grass (Cynodon dactylon (L).Pers) and sediments during the discharging phase (summertime at 145 m water level) in Three Gorges Reservoir (TGRChina); where C. dactylon is a dominant perennial herb in the riparian zone. Yet, the potential risk of Hg contamination in the riparian ecosystem is not thoroughly assessed in the dam regulated reservoir. This study was conducted in the riparian zones of the reservoir formed by a mega dam (Three Gorge Dam) which regulates the water levels during the summer and winter period in the TGR. Our results showed that riparian sediments were acting as a sink for THg and MeHg. Insignificant correlation of THg and MeHg was found between the amphiphyte C. dactylon and its surrounding sediments in the TGR. Bioconcentration factors values for MeHg were found higher than 1 in all study locations in the riparian zones in TGR, which could be due to action of certain bacteria/purely chemical-based methylation on inorganic form of Hg. Additionally, translocation factor indices also highlighted that the amphiphyte C. dactylon was MeHg accumulator in riparian zones. These results suggested that since riparian sediment was found acting as the sink for THg and MeHg during discharging phase, MeHg contamination in the amphiphyte C. dactylon in riparian zones was not caused by the riparian sediments but by other factors, for instance, the anthropogenic activities in the TGR. Finally, this study leads to conclude that amphiphyte C. dactylon can be used as biomonitoring agent for Hg pollution in the TGR. |
| 资助项目 | National Natural Science Foundation of China[B060104] ; CAS-TWAS President's doctoral fellowship |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000748676600001 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15065]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Mirza, Zakaria Ahmed |
| 作者单位 | 1.Queens Univ Belfast, Sch Chem & Chem Engn, David Kier Bldg, Belfast BT9 5AG, Antrim, North Ireland 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mir, Yaseen,Wu, Shengjun,Ma, Maohua,et al. Mercury contamination in the riparian ecosystem during the reservoir discharging regulated by a mega dam[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2022:18. |
| APA | Mir, Yaseen.,Wu, Shengjun.,Ma, Maohua.,Ran, Yiguo.,Zhu, Kai.,...&Mirza, Zakaria Ahmed.(2022).Mercury contamination in the riparian ecosystem during the reservoir discharging regulated by a mega dam.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,18. |
| MLA | Mir, Yaseen,et al."Mercury contamination in the riparian ecosystem during the reservoir discharging regulated by a mega dam".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH (2022):18. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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