| Mercury Redox Chemistry in Waters of the Eastern Asian Seas: From Polluted Coast to Clean Open Ocean | |
| Ci, Zhijia1; Zhang, Xiaoshan1; Yin, Yongguang1; Chen, Jinsheng2; Wang, Shiwei3 | |
| 2016-03-01 | |
| 发表期刊 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 卷号 | 50期号:5页码:2371-2380 |
| 文章类型 | Article |
| 摘要 | We performed incubation experiments using seawaters from representative marine environments of the eastern Asian seas to determine the mercury (Hg) available for photoreduction (Hgr(II)), to investigate the Hg redox reaction kinetics, and to explore the effect of environmental factors and water chemistry on the Hg redox chemistry. Results show that Hgr(II) accounted for a considerable fraction of total Hg (THg) (%Hgr(II)/THg: 24.90 +/- 10.55%, n = 27) and positively correlated with THg. Filtration decreased the Hgr(II) pool of waters with high suspended particulate matter (SPM). The positive linear relationships were found between pseudo -first order rate constants of gross Hg(II) photoreduction (kr) and gross Hg(0) photo -oxidation (k(o)) with photosynthetically active radiation (PAR). Under the condition of PAR of 1 m mol m(-2) s(-1), the kr were significantly (p < 0.05) lower than kr, (k(r)/k(o): 0.86 +/- 0.22). The Hg(0) dark oxidation were significantly higher than the Hg(II) dark reduction. The Hg(II) dark reduction was positively correlated to THg, and the anaerobic condition favored the Hg(II) dark reduction. Filtration significantly influenced the Hg photoredox chemistry of waters with high SPM. UVB radiation was important for both Hg(II) photoreduction and Hg(0) photo -oxidation, and the role of other wavebands in photoinduced transformations of Hg varied with the water chemistry. |
| DOI | 10.1021/acs.est.5b05372 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000371371700029 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/126180 |
| 专题 | 胶州湾海洋生态系统国家野外研究站 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ci, Zhijia,Zhang, Xiaoshan,Yin, Yongguang,et al. Mercury Redox Chemistry in Waters of the Eastern Asian Seas: From Polluted Coast to Clean Open Ocean[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2016,50(5):2371-2380. |
| APA | Ci, Zhijia,Zhang, Xiaoshan,Yin, Yongguang,Chen, Jinsheng,&Wang, Shiwei.(2016).Mercury Redox Chemistry in Waters of the Eastern Asian Seas: From Polluted Coast to Clean Open Ocean.ENVIRONMENTAL SCIENCE & TECHNOLOGY,50(5),2371-2380. |
| MLA | Ci, Zhijia,et al."Mercury Redox Chemistry in Waters of the Eastern Asian Seas: From Polluted Coast to Clean Open Ocean".ENVIRONMENTAL SCIENCE & TECHNOLOGY 50.5(2016):2371-2380. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Mercury Redox Chemis（741KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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