英文论文
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文献类型
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Journal article (JA)
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题名
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Interactions between iron mineral-humic complexes and hexavalent chromium and the corresponding bio-effects
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作者
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Zheng, Zhiyong (1, 3); Zheng, Yue (1, 2); Tian, Xiaochun (4); Yang, Zhaohui (3); Jiang, Yanxia (4); Zhao, Feng (1)
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作者单位
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(1) CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen; 361021, China (2) University of Chinese Academy of Sciences, Beijing; 100049, China (3) College of Environmental Science and Engineering, Hunan University, Changsha; 410082, China (4) State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen; 361021, China
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通讯作者地址
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Chinese Acad Sci, Inst Urban Environm, CAS Key Lab Urban Pollutant Convers, Xiamen 361021, Peoples R China.
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Email
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ResearchID
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ORCID
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期刊名称
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Environmental Pollution
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出版社
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Elsevier Ltd
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ISSN
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0269-7491
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出版信息
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2018-10, 241:265-271.
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JCR
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2
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影响因子
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5.714
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ISBN
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基金
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NSFC [21777155, 41471260]; Xiamen Municipal Science and Technology Program [3502Z20172027]; Fujian Province ST Project [2016T3032]
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会议名称
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会议地点
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会议开始日期
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会议结束日期
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关键词
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Adsorption; Biological materials; Chromium; Hematite; Magnetite; Organic acids; Photodegradation; Thermodynamics
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摘要
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The interfacial behaviors of chromium are fundamental for understanding the environmental effects of chromium in contaminated environments. However, complex surfaces can cause chromium to exhibit a variety of behaviors, especially when humic substances are considered. This work illustrated the role of humics (humic acid and fulvic acid) during the adsorption of Cr(VI) onto iron minerals (magnetite and hematite). The interfacial behaviors were investigated through their adsorption kinetics, adsorption isotherms, and thermodynamics. Then, the microbial diversity was monitored to reflect the bio-effects of Cr(VI) adsorbed onto four iron oxide-humic complexes. The differences in the adsorption capacities and mechanisms of Cr(VI) on the surfaces of the iron mineral-humic complexes were observed. Humics obviously decreased the adsorption capacities of Cr(VI) on the hematite complexes and relieved the decline in the microbial diversity; meanwhile, humics imposed relatively insignificant changes to the Cr(VI) adsorption capacity onto the magnetite complexes. Thus, the corresponding microbial diversity might be mainly affected by released micelles formed by Cr(VI) and humics. These results illustrate the complexities of the interfacial behaviors of Cr(VI) on the surfaces of iron mineral-humic complexes and broaden the current understanding of chromium migration and transportation. ? 2018 Elsevier Ltd
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一级学科
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Environmental Sciences
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WOS入藏号
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WOS:000440390800028
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EI收录号
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20182205263025
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DOI
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10.1016/j.envpol.2018.05.060
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ESI
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ENVIRONMENT/ECOLOGY
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收录于
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SCIE, EI
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