Methylmercury in rice (Oryza sativa L.) grown from the Xunyang Hg mining area, Shaanxi province, northwestern China

	Methylmercury in rice (Oryza sativa L.) grown from the Xunyang Hg mining area, Shaanxi province, northwestern China
	Guangle Qiu; Xinbin Feng; Bo Meng; Xun Wang
	2012
发表期刊	Pure and Applied Chemistry
卷号	84 期号:2 页码:281-289
摘要	Mercury (Hg) is a global pollutant and can transform into methylmercury (MeHg), a highly toxic and bioaccumulative organic form. Recent surveys showed that rice (Oryza sativa L.) rather than fish is the main source of human MeHg exposure in Hg mining and retorting regions in Guizhou province, southwestern China, where rice is a traditional staple food. Here we report that MeHg in rice grown at an active Hg mining and retorting region in Shaanxi province, northwestern China, characterized with different climate compared to Guizhou, contained levels up to 240 mu g kg(-1) MeHg in bran, 78 mu g kg(-1) MeHg in polished rice, and 30 mu g kg(-1) MeHg in hull, respectively. Although the polishing process may reduce MeHg content, the mass balance calculation showed that greater than 50 % of total MeHg mass can be observed in white rice (polished rice). The ongoing Hg retorting activities, which account for the high levels of ambient air Hg, result in high levels of MeHg in rice grains. Our results further demonstrate that the accumulation of MeHg is a common feature of rice.
关键词	Mercury Mining Activity Methylmercury Northwestern China Rice
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/4878
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文环境地球化学国家重点实验室
推荐引用方式 GB/T 7714	Guangle Qiu,Xinbin Feng,Bo Meng,et al. Methylmercury in rice (Oryza sativa L.) grown from the Xunyang Hg mining area, Shaanxi province, northwestern China[J]. Pure and Applied Chemistry,2012,84(2):281-289.
APA	Guangle Qiu,Xinbin Feng,Bo Meng,&Xun Wang.(2012).Methylmercury in rice (Oryza sativa L.) grown from the Xunyang Hg mining area, Shaanxi province, northwestern China.Pure and Applied Chemistry,84(2),281-289.
MLA	Guangle Qiu,et al."Methylmercury in rice (Oryza sativa L.) grown from the Xunyang Hg mining area, Shaanxi province, northwestern China".Pure and Applied Chemistry 84.2(2012):281-289.

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