Seasonal mobility of antimony in sediment-water systems in algae- and macrophyte-dominated zones of Lake Taihu (China)
文献类型： 外文期刊
作者： Ren, Minyi 1 ; Wang, Dan 2 ; Ding, Shiming 1 ; Yang, Liyuan 4 ; Xu, Shiwei 5 ; Yang, Chenye 5 ; Wang, Yan 1 ; Zhang, Chao 1 ;
作者机构： 1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Jiangsu, Peoples R China
2.Shanghai Waterway Engn Design & Consulting Co Ltd, Shanghai 200120, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Jinan, Sch Resources & Environm, Jinan 250022, Shandong, Peoples R China
5.Jiangsu Acad Agr Sci, Cent Lab, Nanjing 210008, Jiangsu, Peoples R China
6.Nanjing EasySensor Environm Technol Co Ltd, Nanjing 210018, Jiangsu, Peoples R China
7.Natl Univ Ireland, Sch Geog & Archaeol, Int Network Environm & Hlth, Galway, Ireland
8.Natl Univ Ireland, Ryan Inst, Galway, Ireland
关键词： Sediment-water system; Passive sampling; Antimony; Trophic status; Transformation
期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）
ISSN： 0045-6535
年卷期： 2019 年 223 卷
页码：
收录情况： SCI
摘要： Differences in trophic status can lead to different water quality and sediment geochemistry characteristics, influencing antimony (Sb) mobility in sediments and its release into the water column. In this study, seasonal sampling was conducted in algal- and macrophyte-dominated zones of Lake Taihu, China. High-resolution dialysis (HR-Peeper) and diffusive gradients in thin films (DGT) techniques were used to measure soluble Sb and DGT-labile Sb in the sediment-water profiles at a 4 mm vertical resolution. Results showed that total Sb in sediments from the two zones were on average 3.50 mg/kg and 3.21 mg/kg in the algal- and macrophyte-dominated zones, respectively, with the residual fraction being 96.3% and 95.4% of the total Sb contents in the two zones. In winter, soluble Sb concentrations in both zones increased. This was probably due to the oxidation of Sb(III) to Sb(V) by Mn and Fe oxides. In summer and autumn, soluble Sb concentrations in the algal-dominated region remained low. This is attributed to the dominance of insoluble Sb(III) in sediments under anoxic conditions under eutrophic environments. In contrast, soluble Sb concentrations in the macrophyte-dominated zone were significantly high in summer and were 4.15-times higher than limits set by the World Health Organization (WHO). This likely resulted from the photochemical and rhizospheric oxidation of insoluble Sb(III) compounds. It is suggested that Sb contamination in the sediment-water system of the macrophyte-dominated zone deserves additional attention. (C) 2019 Elsevier Ltd. All rights reserved.
- 相关文献
作者其他论文 更多>>
-
Purification Effect and Microbial Community Analysis of Aquaculture Wastewater Using High-Efficiency and Stable Biochemical System
作者：Su, Lei;Su, Yuting;Wu, Shanshan;Gao, Hang;Wu, Hangtao;Yang, Minghui;Li, Yaying;Wang, Dan;Lu, Yusheng;Zhang, Kun;Gu, Wenjie;Peng, Huanlong;Zhou, Donglai
关键词：aquaculture wastewater; microbial community; pollutant removal; stable bioreactor
-
Impact of different continuous fertilizations on the antibiotic resistome associated with a subtropical triple-cropping system over one decade☆
作者：Zheng, Jin;Li, Ya-Ying;Lu, Yu-Sheng;Wang, Dan;Liu, Chong;Peng, Huan-Long;Shi, Chao-Hong;Xie, Kai-Zhi;Zhang, Kun;Sun, Li-Li;Zhou, Chang-Min;Gu, Wen-Jie;Zheng, Jin;Li, Ya-Ying;Lu, Yu-Sheng;Wang, Dan;Liu, Chong;Peng, Huan-Long;Shi, Chao-Hong;Xie, Kai-Zhi;Zhang, Kun;Sun, Li-Li;Zhou, Chang-Min;Gu, Wen-Jie;Gu, Wen-Jie;Li, Ya-Ying;Gu, Wen-Jie
关键词：Antibiotic resistance gene; Metagenome; Mobile genetic elements; Viruses; Chicken manure
-
Microbial biomass stoichiometry and proportion of Fe organic complexes separately shape the heterogeneity of mixotrophic denitrification and net N2O sinks in iron-carbon amended ecological ditch
作者：Jiang, Bi-Ni;Zhang, Ying-Ying;Wang, Yan;Liu, Hai-qin;Zhang, Zhi-Yong;Yang, Yi-Jing;Jiang, Bi-Ni;Yang, Yi-Jing;Song, Hai-Liang
关键词：Vegetated drainage ditch; Mixotrophic denitrification; Fe oxides; DOM fraction; Iron-carbon micro-electrolysis; Net N2O sink
-
Influence of feedstock and hydrothermal duration on the characteristics of agricultural waste based hydrochar and the derived DOM for the contaminated farmland remediation potentials
作者：Gu, Wenjie;Lu, Yusheng;Shi, Chaohong;Xie, Kaizhi;Wang, Dan;Liu, Chong;Peng, Huanlong;Zhang, Kun;Li, Yaying;Gu, Wenjie;Lu, Yusheng;Shi, Chaohong;Xie, Kaizhi;Wang, Dan;Liu, Chong;Peng, Huanlong;Zhang, Kun;Li, Yaying;Gu, Wenjie;Gu, Wenjie;Li, Yaying;Qiu, Rongliang;Qiu, Rongliang
关键词：Hydrochar; Hydrothermal duration; Dissolved organic matter; Agricultural waste; Biotoxicity
-
Strain prioritization for lipopeptide-producing bacteria with antagonistic effects against Fusarium graminearum
作者：Wang, Gang;Wang, Yuting;Chen, Daoming;Liu, Xin;Shi, Jianrong;Xu, Jianhong;Wang, Gang;Wang, Yuting;Xu, Jianhong;Wang, Gang;Zhang, Xiaoyun;Xu, Jianhong;Hu, Junqiang;Mohamed, Sherif Ramzy;Lee, Yin-Won;Yang, Chenye
关键词：Strain prioritization; Biocontrol; Fusarium graminearum; lipopeptides; Bacillus amyloliquefaciens; antagonistic mechanism
-
Growth-promoting bacterium Enterobacter sp. CS8-gfp triggers jasmonate signaling pathway for atrazine and thiamethoxam degradation in rice (Oryza sativa L.)
作者：Ma, Li Ya;Wan, Qun;Ge, Jing;Li, Yong;Feng, Fayun;Li, Mei;Cheng, Jinjin;Chen, Jian;Wang, Ya;Cao, Yaoyao;Yu, Xiangyang;Ma, Li Ya;Wan, Qun;Ge, Jing;Li, Yong;Feng, Fayun;Li, Mei;Cheng, Jinjin;Chen, Jian;Wang, Ya;Cao, Yaoyao;Yu, Xiangyang;Yang, Chenye
关键词：Growth-promoting bacterium; Atrazine; Thiamethoxam; Jasmonic acid; Degradation
-
Resistance allele frequencies of Chilo suppressalis populations to Cry1Ab in Chongqing
作者：Lu, Wencai;Ma, Lianjie;Chen, Xingru;Wang, Dong;Wang, Yan;Zhang, Hui
关键词：Chilo suppressalis; Bacillus thuringiensis; Cry1Ab; Resistance allele frequency; Sensitivity
