Study on Adsorption of As(III) by a New Bio-Material from Chitin Pyrolysis
文献类型：期刊论文
| 作者 | Yang, Zhiguang; Yan, Gaojun; Song, Zhiwei; Zhang, Junzheng; Wang, Chenlong; Yu, Zhisheng; Bai, Zhihui; Zhuang, Guoqiang; Liang, Feng |
| 刊名 | WATER
 |
| 出版日期 | 2021 |
| 卷号 | 8期号:12页码:1098-1103 |
| ISSN号 | 2328-8930 |
| 英文摘要 | Foliar oxidation of gaseous elemental mercury [Hg(0)] determines the foliar Hg uptake rate and accumulation capacity and plays a crucial role in atmospheric Hg deposition and biogeochemical Hg cycle. However, mechanisms of foliar Hg(0) oxidation are poorly understood in plants, particularly in forest trees. Herein, foliar oxidation of Hg(0) to different Hg oxidation states was studied using poplar as a model tree species. Mercuric form [Hg(II)] was the dominant Hg species in foliage after in vivo Hg(0) exposure, and trace amounts of mercurous form [Hg(I)] was also detected. Results from in vitro Hg(0) exposure using a leaf homogenate demonstrated that both Hg(I) and Hg(II) were formed with Hg(II) being the dominant species. However, Hg(I) instead of Hg(II) was detected if a phosphate buffer was used as medium for the in vitro Hg(0) exposure experiment. In the leaf homogenate, after enzymatic inhibition and thiol blocking, formation of Hg(II) from Hg(0) or Hg(I) was significantly reduced, whereas Hg(0) oxidation to Hg(I) increased. This work demonstrates that gaseous elemental mercury oxidation in foliage can occur via a two-step singleelectron transfer process, involving Hg(I) and Hg(II) formation mediated by nonenzymatic and enzymatic reactions. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46901]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 作者单位 | 1.Heilongjiang Univ Sci & Technol, Sch Environm & Chem Engn, Harbin 150022, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Lab Environm Biotechnol, Beijing 100085, Peoples R China 3.Henan Univ Urban Construct, Henan Prov Key Lab Water Pollut Control & Rehabil, Pingdingshan 467036, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Zhiguang,Yan, Gaojun,Song, Zhiwei,et al. Study on Adsorption of As(III) by a New Bio-Material from Chitin Pyrolysis[J]. WATER,2021,8(12):1098-1103. |
| APA | Yang, Zhiguang.,Yan, Gaojun.,Song, Zhiwei.,Zhang, Junzheng.,Wang, Chenlong.,...&Liang, Feng.(2021).Study on Adsorption of As(III) by a New Bio-Material from Chitin Pyrolysis.WATER,8(12),1098-1103. |
| MLA | Yang, Zhiguang,et al."Study on Adsorption of As(III) by a New Bio-Material from Chitin Pyrolysis".WATER 8.12(2021):1098-1103. |
入库方式： OAI收割
来源：生态环境研究中心
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