Rice consumption contributes to low level methylmercury exposure in southern China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 土壤环境科学实验室

	Rice consumption contributes to low level methylmercury exposure in southern China
	Li, Ping ; Feng, Xinbin ; Yuan, Xiaobo ; Chan, Hing Man ; Qiu, Guangle ; Sun, Guo-Xin ; Zhu, Yong-Guan
刊名	ENVIRONMENT INTERNATIONAL
	2012
卷号	49 期号:1 页码:18－23
关键词	Rice Total mercury Methylmercury Probable daily intake Contribution Southern China
ISSN号	0160-4120
中文摘要	Fish consumption is considered as the primary pathway of human methylmercury (MeHg) exposure. However, recent studies highlighted that, rice, rather than fish, is the main route of human MeHg exposure in Guizhou, inland China. China is considered as the largest anthropogenic source of mercury (Hg) emission in the world, which has led to serious environmental Hg pollution. But there are no comprehensive studies regarding this environmental health problem to evaluate human Hg exposure and associated health effects. This study aimed to estimate daily MeHg intake and health risk in 7 provinces in southern China, and to assess the relative contribution from rice and fish consumption. The average levels of total mercury (THg) and MeHg in rice samples were generally low at 10.1 ng.g(-1) and 2.47 ng.g(-1), respectively. But a total of 36 rice samples (12.7%) had THg concentration exceeding the national limit (20 ng.g(-1)). Generally, rural population had significantly higher Probable Daily Intakes (PDIs) of MeHg than urban population from rice consumption and its relative contribution to MeHg exposure increased significantly from coastal to inland area. The averages of PDIs of MeHg were 0.020 mu g.kg(-1).d(-1) and 0.028 mu g.kg(-1).d(-1) for urban and rural population in southern China, respectively. Despite the serious environmental Hg pollutions in China, the general population in southern China had low risk of MeHg exposure. But rice is an important route of human MeHg exposure in southern China, especially for the rural population in inland area. The findings indicate that rice consumption should be considered when evaluating MeHg exposure in rice eating population in southern China. (c) 2012 Elsevier Ltd. All rights reserved.
WOS记录号	WOS:000311600500003
公开日期	2014-11-05
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7929]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Li, Ping,Feng, Xinbin,Yuan, Xiaobo,et al. Rice consumption contributes to low level methylmercury exposure in southern China[J]. ENVIRONMENT INTERNATIONAL,2012,49(1):18－23.
APA	Li, Ping.,Feng, Xinbin.,Yuan, Xiaobo.,Chan, Hing Man.,Qiu, Guangle.,...&Zhu, Yong-Guan.(2012).Rice consumption contributes to low level methylmercury exposure in southern China.ENVIRONMENT INTERNATIONAL,49(1),18－23.
MLA	Li, Ping,et al."Rice consumption contributes to low level methylmercury exposure in southern China".ENVIRONMENT INTERNATIONAL 49.1(2012):18－23.