Mercury Redox Chemistry in Waters of the Eastern Asian Seas: From Polluted Coast to Clean Open Ocean
文献类型：期刊论文
| 作者 | Ci, Zhijia; Zhang, Xiaoshan; Yin, Yongguang; Chen, Jinsheng; Wang, Shiwei |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2016-03-01 |
| 卷号 | 50期号:5页码:2371-2380 |
| 英文摘要 | 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. |
| 收录类别 | SCI |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/35710]  |
| 专题 | 生态环境研究中心_大气环境科学实验室 |
| 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. |
入库方式： OAI收割
来源：生态环境研究中心
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