Inorganic mercury accumulation in rice (Oryza sativa L.)

	Inorganic mercury accumulation in rice (Oryza sativa L.)
	Bo Meng; Xinbin Feng; Guangle Qiu; Dingyong Wang; Peng Liang; Ping Li; Lihai Shang
	2012
发表期刊	Environmental Toxicology and Chemistry
卷号	31 期号:9 页码:2093-2098
摘要	To investigate the source and process of inorganic mercury (IHg) accumulation in rice, we monitored the concentrations of IHg in tissues of rice plants (Oryza sativa L.) from four experimental plantation plots. Biweekly during the rice-growing season, tissues of rice plants, corresponding soil, precipitation, and irrigation water samples were collected. The sampling data support the following: (1) the atmosphere is the principal source of IHg to the aboveground parts of the rice plant; (2) both the atmosphere and soil contribute to IHg content in stalks, but the former source tends to be more important; and (3) soil is the major source of root IHg content. These observations and the fact that the gradually increasing concentration and mass of IHg in stalks and leaves during the rice-growing season suggested that atmospheric Hg could be absorbed by and incorporated into the aboveground parts of the rice plant and that limited or no Hg emission to the air or translocation to the soil occurred after deposition of atmospheric Hg. The root surface acted as a potential Hg barrier and consequently reduced the translocation of Hg ion mass through the root system to the aboveground parts. Accumulated IHg in aboveground parts of rice plants cannot be transported to seeds, which is completely different from the case of methylmercury.
关键词	Inorganic Mercury Rice (Oryza Sativa L.) Accumulation
学科领域	地球化学环境与人体健康
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/352002/4785
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	Bo Meng,Xinbin Feng,Guangle Qiu,et al. Inorganic mercury accumulation in rice (Oryza sativa L.)[J]. Environmental Toxicology and Chemistry,2012,31(9):2093-2098　.
APA	Bo Meng.,Xinbin Feng.,Guangle Qiu.,Dingyong Wang.,Peng Liang.,...&Lihai Shang.(2012).Inorganic mercury accumulation in rice (Oryza sativa L.).Environmental Toxicology and Chemistry,31(9),2093-2098　.
MLA	Bo Meng,et al."Inorganic mercury accumulation in rice (Oryza sativa L.)".Environmental Toxicology and Chemistry 31.9(2012):2093-2098　.

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