文献类型：期刊文献

英文题名：Thallium contamination in arable soils and vegetables around a steel plant A newly-found significant source of Tl pollution in South China

作者：Liu, Juan[1,2];Luo, Xuwen[1,2];Wang, Jin[1,2];Xiao, Tangfu[1,2];Chen, Diyun[1,2];Sheng, Guodong[3];Yin, Meiling[1,2];Lippold, Holger[4];Wang, Chunlin[5];Chen, Yongheng[1,2]

机构：[1]Guangzhou Univ, Innovat Ctr, Guangzhou 510006, Guangdong, Peoples R China;[2]Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;[3]Shaoxing Univ, Coll Life Sci, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China;[4]Helmholtz Zentrum Dresden Rossendorf, Inst Ressourcenokol, D-04318 Leipzig, Germany;[5]Guangdong Prov Acad Environm Sci, Guangzhou 510045, Guangdong, Peoples R China

年份：2017

卷号：224

起止页码：445

外文期刊名：ENVIRONMENTAL POLLUTION

收录：SCI-EXPANDED(收录号：WOS:000399261400044)、、EI(收录号：20170903384758)、Scopus(收录号：2-s2.0-85013427511)、WOS

基金：This project was supported by the National Natural Science Foundation of China (41573008; 41203002; 41573119; 41273100; 21577093; 21207092), the Guangdong Provincial Natural Science Foundation (2014A030313527; 2015A030313512), the Environmental Protection Ministry of Public Welfare Research Projects (201509051), the Guangzhou Science and Technology Programme (201510010205), and the Guangzhou Education Bureau (1201431072; 13XT02) and High Level University Construction Project (Regional Water Environment Safety and Water Ecological Protection). The authors wish to thank L. X. Su, Y.J. Wu, J. M. Ren and X.P. Li from the Guangzhou University for technical assistance. The authors would also like to thank anonymous reviewers who significantly improved the quality of the paper.

语种：英文

外文关键词：Thallium; Soil; Vegetable; Ecological risk; Steel plant

外文摘要：Thallium (Tl) is a highly toxic rare element. Severe Tl poisoning can cause neurological brain damage or even death. The present study was designed to investigate contents of Tl and other associated heavy metals in arable soils and twelve common vegetables cultivated around a steel plant in South China, a newly-found initiator of Tl pollution. Potential health risks of these metals to exposed population via consumption of vegetables were examined by calculating hazard quotients (HQ). The soils showed a significant contamination with Tl at a mean concentration of 1.34 mg/kg. The Tl levels in most vegetables (such as leaf lettuce, chard and pak choy) surpassed the maximum permissible level (0.5 mg/kg) according to the environmental quality standards for food in Germany. Vegetables like leaf lettuce, chard, pak choy, romaine lettuce and Indian beans all exhibited bioconcentration factors (BCF) and transfer factors (TF) for Tl higher than 1, indicating a hyperaccumulation of Tl in these plants. Although the elevated Tl levels in the vegetables at present will not immediately pose significant non-carcinogenic health risks to residents, it highlights the necessity of a permanent monitoring of Tl contamination in the steel-making areas. (C) 2017 Elsevier Ltd. All rights reserved.