Diurnal characteristics of migration and transformation of mercury and effects of nitrate in Jialing River, Chongqing, China
文献类型: 外文期刊
第一作者: Sun, Rongguo
作者: Sun, Rongguo;Wang, Dingyong;Mao, Wen;Ma, Ming;Zhang, Cheng;Jiang, Tao;Sun, Rongguo;Wang, Dingyong;Zhang, Cheng;Jiang, Tao
作者机构:
关键词: Mercury cycling;Photo-degradation;Diffusive flux;Nitrate;Contribution-rate
期刊名称:CHEMOSPHERE ( 影响因子:8.1; 五年影响因子:7.7 )
ISSN: 0045-6535
年卷期: 2015 年 119 卷
页码:
收录情况: SCI
摘要: Laboratory incubation experiments were performed to identify diurnal characteristics of migration and transformation of mercury (Hg) and effects of nitrate (NO3-, a hydroxyl radical donor by photolysis) in Jialing River, Chongqing, China. It is found that there are strong diurnal signals of [monomethylmercury (MMHg)] and [reactive Hg (RHg)] in sediment, pore water and overlying water, which suggest that solar radiation may be an important variable that involved in aquatic Hg cycling. Photo-degradation (PD) of MMHg plays a key role in Hg cycling in water systems, and the rates are measured to be 38.22% in March, 2012. The presence of NO3- has a marked effect on MMHg PD under solar radiation, and affects inorganic species reducting to Hg-0, resulting in more Hg species available for methylation. So NO3- is an important factor for Hg cycling in water systems. Diffusive flux of MMHg, RHg and dissolved Hg (DHg) are 1.92-2.34, 3.43-3.64 and 3.04-5.71 ng m(-2) d(-1) at daytime, and 6.04-6.92, 3.22-3.25 and 7.79-8.37 ng m(-2) d(-1) at nighttime, respectively, implying that sediment is a major Hg source for shallow-water area in Jialing River at springtime. These results show great importance for understanding Hg biogeochemical processes in clear, oligotrophic, shallow, sluggish, and agriculturally-impacted waters. (C) 2014 Elsevier Ltd. All rights reserved.
分类号:
- 相关文献
作者其他论文 更多>>
-
Development of an automatic tubular chemiluminescence immunoassay using magnetic particles for the detection of antibodies against foot-and-mouth disease virus serotype A
作者:Li, Fengsong;Cui, Yan;Li, Fengsong;Bao, Yanfang;Jiang, Tao;Li, Taoshan;Zuo, Yili;Yang, Guang;Li, Xin;Lin, Mi;Jiang, Tao;Lin, Mi
关键词:Tubular chemiluminescence immunoassay; Automation; Foot-and-mouth disease virus serotype A; Antibody detection; Serum
-
Effect of Gardeniae Fructus Powder on Growth Performance, Antioxidant Capacity, Intestinal Barrier Function, and Colonic Microbiota of Weaned Piglets
作者:Liu, Shilong;Ma, Ming;Guo, Shining;Liu, Shilong;Tian, Min;Qiu, Yueqin;Tang, Jiaxi;Hou, Jing;Lu, Qi;Tian, Chaoyang;Ye, Guohao;Wang, Li;Gao, Kaiguo;Jiang, Zongyong;Yang, Xuefen;Liu, Shilong;Tian, Min;Qiu, Yueqin;Tang, Jiaxi;Hou, Jing;Lu, Qi;Tian, Chaoyang;Ye, Guohao;Wang, Li;Gao, Kaiguo;Jiang, Zongyong;Yang, Xuefen;Liu, Shilong;Tian, Min;Qiu, Yueqin;Tang, Jiaxi;Hou, Jing;Lu, Qi;Tian, Chaoyang;Ye, Guohao;Wang, Li;Gao, Kaiguo;Jiang, Zongyong;Yang, Xuefen;Liu, Shilong;Tian, Min;Qiu, Yueqin;Tang, Jiaxi;Hou, Jing;Lu, Qi;Tian, Chaoyang;Ye, Guohao;Wang, Li;Gao, Kaiguo;Jiang, Zongyong;Yang, Xuefen
关键词:piglet; Gardeniae Fructus; antioxidant capacity; intestinal barrier function; colonic microbiota
-
Iron addition promotes mercury removal from soil by Robinia pseudoacacia-rhizobia symbiosis
作者:Wang, Shufeng;Wang, Tao;Gao, Lan;Ma, Ming;Rennenberg, Heinz;Du, Hongxia;Wang, Dingyong
关键词:antioxidant; mercury accumulation; rhizobium; rhizosphere; Robinia pseudoacacia
-
Phylogeography Analysis Reveals Rabies Epidemiology, Evolution, and Transmission in the Philippines
作者:Zhang, Liang;Jiang, Jianfeng;Gong, Wenjie;Zhang, Liang;Sun, Sheng;Liu, Yan;Tu, Changchun;Gong, Wenjie;Feng, Ye;Cruz, Jeffrey;Gonzales, Riva Marie;Azul, Rachel R.;Pena, Rainelda C. Dela;Tian, Yao;Jiang, Tao;Fang, Liqun;Feng, Ye;Wang, Yuyang;Tu, Changchun
关键词:rabies virus; Philippines; molecular epidemiology; transmission patterns; selection pressure; strategy
-
Cnidii fructus and Sophorae Flavescentis Radix polysaccharides inhibit SARS-CoV-2 entry by interfering with Spike protein-mediated membrane fusion
作者:Liu, Feng;Jiang, Xuyong;Lin, Yanling;Wu, Fushan;Li, Jingxuan;Han, Lu;Shan, Junjie;Xiao, Zhiyong;Zhou, Wenxia;Liu, Feng;Jiang, Xuyong;Lin, Yanling;Wu, Fushan;Li, Jingxuan;Han, Lu;Shan, Junjie;Xiao, Zhiyong;Zhou, Wenxia;Shang, Chao;Zhang, Cheng
关键词:Cnidii fructus; Sophorae Flavescentis Radix; Polysaccharides; SARS-CoV-2; Fusion
-
Multi-omics insights into rhizobium-induced cadmium tolerance in Robinia pseudoacacia: antioxidant-metabolic coordination and transporter activation
作者:Gao, Lan;Wang, Shufeng;Mao, Qiaozhi;Ma, Ming;Rennenberg, Heinz;Gao, Lan;Du, Hongxia;Zhao, Wancang
关键词:Cadmium; Legume-rhizobium; Black locust; Symbiosis
-
Chromosome-level genome assembly of the freshwater bivalve Anodonta woodiana
作者:Chen, Xiubao;Jiang, Tao;Xue, Junren;Liu, Kai;Gu, Mengying;Wang, Meiyi
关键词: