Mercury isotopic compositions of mosses, conifer needles, and surface soils: Implications for mercury distribution and sources in Shergyla Mountain, Tibetan Plateau
文献类型：期刊论文
| 作者 | Liu, Hong-wei; Shao, Jun-juan; Yu, Ben ; Liang, Yong; Duo, Bu; Fu, Jian-jie; Yang, Rui-qiang; Shi, Jian-bo; Jiang, Gui-bin
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| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2019-05-15 |
| 卷号 | 172页码:225-231 |
| 关键词 | Mercury isotopes Mercury sources Tibetan Plateau Altitudinal distribution |
| ISSN号 | 0147-6513 |
| 英文摘要 | Understanding the distribution and sources of mercury (Hg) in the Tibetan Plateau is of great value to study the long-range transport of Hg. Herein, the total Hg (THg) concentrations and the isotopic compositions of mosses, conifer needles, and surface soils collected from both slopes of the Shergyla Mountain of Tibetan Plateau were analyzed. The contents of THg in samples (except mosses on the eastern slope) were significantly positively correlated with altitude in both the western and eastern slopes, possibly caused by topographic factors. In contrast, Delta Hg-199 in samples was significantly negatively correlated with altitude. On the basis of Hg isotopic compositions, atmospheric Hg-0 uptake was indicated as the primary accumulation pathway of Hg in mosses (Delta Hg-199: -0.12 +/- 0.09 parts per thousand, -0.26 - 0.00 parts per thousand, 1 SD, n = 10) and conifer needles (Delta Hg-199: -0.21 +/- 0.08 parts per thousand, -0.36- -0.11 parts per thousand, 1 SD, n = 9). Moreover, the contributing fractions of atmospheric Hg to Hg in surface soils (Delta Hg-199: -0.20 +/- 0.07 parts per thousand, -0.31 - -0.06 parts per thousand, 1 SD, n = 17) increased with altitude and accounted for an average of 87 +/- 9% in atmospheric sources. Due to the special geographic positions and environmental conditions of the Tibetan Plateau, the results of this study were essential for further understanding the long-range transport and global cycling of Hg. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/42973]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Jianghan Univ, Inst Environm & Hlth, Wuhan 430056, Hubei, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Tibet Univ, Sci Fac, Lhasa 850000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Hong-wei,Shao, Jun-juan,Yu, Ben,et al. Mercury isotopic compositions of mosses, conifer needles, and surface soils: Implications for mercury distribution and sources in Shergyla Mountain, Tibetan Plateau[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2019,172:225-231. |
| APA | Liu, Hong-wei.,Shao, Jun-juan.,Yu, Ben.,Liang, Yong.,Duo, Bu.,...&Jiang, Gui-bin.(2019).Mercury isotopic compositions of mosses, conifer needles, and surface soils: Implications for mercury distribution and sources in Shergyla Mountain, Tibetan Plateau.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,172,225-231. |
| MLA | Liu, Hong-wei,et al."Mercury isotopic compositions of mosses, conifer needles, and surface soils: Implications for mercury distribution and sources in Shergyla Mountain, Tibetan Plateau".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 172(2019):225-231. |
入库方式： OAI收割
来源：生态环境研究中心
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