典型文献
Immobilization and transformation of co-existing arsenic and antimony in highly contaminated sediment by nano zero-valent iron
文献摘要：
Arsenic (As) and antimony (Sb) are usually coexistent in mine wastes and pose a great threat to human health.The As immobilization by nano zero-valent iron (nZVI) is promising,how-ever,the stabilization for co-occurring As and Sb is not known.Herein,the immobilization and transformation of As and Sb in nZVI-treated sediments were evaluated using com-plementary leaching experiments and characterization techniques.Raw sediment samples from a gold-antimony deposit revealed the co-existence of ultrahigh As and Sb at 50.3 and 14.9 g/kg,respectively.Leaching results show that As was more efficiently stabilized by nZVI than Sb,which was primarily due to the soluble fraction that was readily absorbed by nZVI of As was higher.As the nZVI treatment proceeds,the oxidation and reduction of As and Sb occur simultaneously as evidenced by XPS analysis.The primary oxidant,hydroxyl radicals,was detected by EPR studies,proving the occurrence of nZVI induced Fenton reaction.This study sheds light on differences in the interaction and immobilization of nZVI with Sb and As in co-contaminated sediments.
文献关键词：
中图分类号：
作者姓名：
Jianlong Guo;Zhipeng Yin;Wen Zhong;Chuanyong Jing
作者机构：
State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Environmental Science and Engineering,Shandong University,Qingdao 266237,China
文献出处：
引用格式：
[1]Jianlong Guo;Zhipeng Yin;Wen Zhong;Chuanyong Jing-.Immobilization and transformation of co-existing arsenic and antimony in highly contaminated sediment by nano zero-valent iron)[J].环境科学学报（英文版）,2022(02):152-160
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AB值：
0.587469
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