Bioaccumulation of Methylmercury versus Inorganic Mercury in Rice (Oryza sativa L.) Grain

	Bioaccumulation of Methylmercury versus Inorganic Mercury in Rice (Oryza sativa L.) Grain
	HUA ZHANG; XINBIN FENG; THORJØRN LARSSEN; LIHAI SHANG; PING LI
	2010
发表期刊	Environmental Science & Technology
卷号	44 期号:12 页码:4499-4504
摘要	Mercury (Hg) bioaccumulation in aquatic food webs has been much studied, motivated from high Hg levels found in many fish species important for human consumption. Hg bioaccumulation in terrestrial food chains have received little attention and assumed to be of minor importance. However, recent studies showed that rice can be an important pathway of methylmercury (MeHg) exposure to inhabitants in Hg mining areas in China. In this study, 59 sampling sites (including 32 sites from "heavily polluted area", 19 from "less-impacted area" and 8 from "control sites") were selected in a Hg mining area in China and both inorganic Hg (IHg) and MeHg were determined in rice grain (brown rice) and soil samples to evaluate Hg bioaccumulation in rice grain. Bio-Accumulation Factors (BAFs) for IHg ranged from 0.00014 to 0.51 and from 0.71 to 50 for MeHg. BAFs for MeHg were on average more than 800 times higher than those for IHg (maximum: 40,000 times). This study, for the first time, showed that rice grain is an intensive bioaccumulator of MeHg, but not of IHg, which may be trapped by the roots.
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/352002/6807
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	HUA ZHANG,XINBIN FENG,THORJØRN LARSSEN,et al. Bioaccumulation of Methylmercury versus Inorganic Mercury in Rice (Oryza sativa L.) Grain[J]. Environmental Science & Technology,2010,44(12):4499-4504.
APA	HUA ZHANG,XINBIN FENG,THORJØRN LARSSEN,LIHAI SHANG,&PING LI.(2010).Bioaccumulation of Methylmercury versus Inorganic Mercury in Rice (Oryza sativa L.) Grain.Environmental Science & Technology,44(12),4499-4504.
MLA	HUA ZHANG,et al."Bioaccumulation of Methylmercury versus Inorganic Mercury in Rice (Oryza sativa L.) Grain".Environmental Science & Technology 44.12(2010):4499-4504.

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