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Accumulation of total mercury and methylmercury in rice plants collected from different mining areas in China
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China .
Ecological Civilization Construction Committee of Guiyang, Guiyang Research Academy of Environmental Sciences, Guiyang, China .
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China .
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China .ORCID iD: 0000-0002-5729-1908
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2014 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 184, p. 179-186Article in journal (Refereed) Published
Abstract [en]

A total of 155 rice plants were collected from ten mining areas in three provinces of China (Hunan, Guizhou and Guangdong), where most of mercury (Hg) mining takes place in China. During the harvest season, whole rice plants were sampled and divided into root, stalk & leaf, husk and seed (brown rice), together with soil from root zone. Although the degree of Hg contamination varied significantly among different mining areas, rice seed showed the highest ability for methylmercury (MeHg) accumulation. Both concentrations of total mercury (THg) and MeHg in rice plants were significantly correlated with Hg levels in soil, indicating soil is still an important source for both inorganic mercury (IHg) and MeHg in rice plants. The obvious discrepancy between the distribution patterns of THg and MeHg reflected different pathways of IHg and MeHg accumulation. Water soluble Hg may play more important role in MeHg accumulation in rice plants.

Place, publisher, year, edition, pages
Pergamon Press, 2014. Vol. 184, p. 179-186
Keywords [en]
Accumulation, Hg, Methylmercury, Rice plants, Total mercury, Water soluble
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:oru:diva-38408DOI: 10.1016/j.envpol.2013.08.030ISI: 000329419200022PubMedID: 24056187Scopus ID: 2-s2.0-84884630664OAI: oai:DiVA.org:oru-38408DiVA, id: diva2:765026
Note

Sponsors:

National Basic Research Program of China Grant(s): 2013CB430004  2009CB421605 

National Natural Science Foundation of China Grant(s): 21120102040  20937002  31070450 

Available from: 2014-11-21 Created: 2014-11-07 Last updated: 2018-06-11Bibliographically approved

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Wang, Thanh

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