Thallium geochemical fractionation and migration in Tl-As rich soils: The key controls

doi:10.1016/j.scitotenv.2021.146995

	Thallium geochemical fractionation and migration in Tl-As rich soils: The key controls
	Wei, Xudong 2,5; Wang, Jin 2; She, Jingye 2; Sun, Jing 3; Liu, Juan 2; Wang, Yuxuan 2; Yang, Xiao 4; Ouyang, Qi'en 2; Lin, Yuyang 2; Xiao, Tangfu 2
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-08-25
卷号	784 页码:9
关键词	Geochemical fractionation Tl-As in soil LA-ICP-MS Metal metalloid speciation Mine tailings contamination
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2021.146995
通讯作者	Liu, Juan(liujuan858585@163.com)
英文摘要	Thallium (Tl) pollution caused by mining and processing of Tl-enriched ores has become an increasing concern. This study explored the geochemical fractionation and vertical transfer of Tl in a soil profile (200 cm) from a representative Tl-As mineralized area, Southwest China. The results showed that the soils were heavily enriched by Tl and As, with concentration ranging from 3.91 & ndash;17.3 and 1830 & ndash;8840 mg/kg (6.79 and 2973 mg/kg in average), respectively. Approximately 50% of Tl occurred in geochemically mobile fractions in the topsoil, wherein the reducible fraction was the most enriched fraction. Further characterization using LA-ICP-MS and TEM revealed that enriched Tl and As in soils were mainly inherited from the weathering of mine tailing piles upstream. XPS characterization indicated that Fe oxides herein may play a critical role in the oxidation of Tl(I) to Tl(III) which provoked further adsorption of Tl onto Fe oxides, thereby facilitating Tl enrichment in the reducible fraction. The findings highlight that the pivotal role of Fe oxides from mineralized area in the co-mobility and migration of Tl and As in the depth profile.& nbsp; (c) 2021 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[41873015] ; National Natural Science Foundation of China[41830753] ; National Natural Science Foundation of China[41773011] ; Guangdong Provincial Natural Science Foundation[2021B1515020078] ; Guangdong Provincial Natural Science Foundation[2021A1515011588] ; Guangdong Provincial Natural Science Foundation[2014A030313527] ; Scientific Research Projects in Colleges and Universities of Guangzhou Education Bureau, Guangzhou, China[201831803] ; Challenge Cup Undergraduate Program
WOS关键词	HEALTH-RISK ; CONTAMINATION ; POLLUTION ; SPECIATION ; EXPOSURE ; MOBILITY ; SMELTER ; LEAD ; BANGLADESH ; OXIDATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000657591600010
资助机构	National Natural Science Foundation of China ; Guangdong Provincial Natural Science Foundation ; Scientific Research Projects in Colleges and Universities of Guangzhou Education Bureau, Guangzhou, China ; Challenge Cup Undergraduate Program
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164058]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Juan
作者单位	1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China 2.Guangzhou Univ, Sch Environm Sci & Engn, Guangdong Prov Key Lab Radionuclides Pollut Contr, Key Lab Water Qual & Conservat Pearl River Delta, Guangzhou 510006, Peoples R China 3.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 5.Univ Padua, Dept Agron Food Nat Resources Anim & Environm DAF, Agripolis Campus,Viale Univ, I-35020 Legnaro, PD, Italy
推荐引用方式 GB/T 7714	Wei, Xudong,Wang, Jin,She, Jingye,et al. Thallium geochemical fractionation and migration in Tl-As rich soils: The key controls[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,784:9.
APA	Wei, Xudong.,Wang, Jin.,She, Jingye.,Sun, Jing.,Liu, Juan.,...&Tsang, Daniel C. W..(2021).Thallium geochemical fractionation and migration in Tl-As rich soils: The key controls.SCIENCE OF THE TOTAL ENVIRONMENT,784,9.
MLA	Wei, Xudong,et al."Thallium geochemical fractionation and migration in Tl-As rich soils: The key controls".SCIENCE OF THE TOTAL ENVIRONMENT 784(2021):9.