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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
2012
Source PublicationENVIRONMENT INTERNATIONAL
ISSN0160-4120
Volume49Issue:1Pages:18-23
AbstractFish 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.
Department中澳联合土壤环境研究室
KeywordRice Total Mercury Methylmercury Probable Daily Intake Contribution Southern China
WOS IDWOS:000311600500003
Citation statistics
Cited Times:62[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/7929
Collection土壤环境科学实验室
Recommended Citation
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.
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