期刊
ENVIRONMENTAL POLLUTION
卷 158, 期 5, 页码 1536-1541出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2009.12.022
关键词
Arsenic; China; Grain; Phosphorus; Rice
资金
- Technology Department of Guangdong Province [2009B020311011, 2007A020100002-7]
- China Scholarship Council
The consumption of paddy rice (Oryza sativa L) is a major inorganic arsenic exposure pathway in S.E. Asia. A multi-location survey was undertaken in Guangdong Province, South China to assess arsenic accumulation and speciation in 2 rice cultivars, one an Indica and the other a hybrid Indica. The results showed that arsenic concentrations in rice tissue increased in the order grain < husk < straw < root. Rice grain arsenic content of 2 rice cultivars was significant different and correlated with phosphorus concentration and molar ratio of P/As in shoot, being higher for the Indica cultivar than for the hybrid Indica, which suggests altering shoot phosphorus status as a promising route for breeding rice cultivars with reduced grain arsenic. Speciation of grain arsenic, performed using HPLC-ICP-MS, identified inorganic arsenic as the dominant arsenic species present in the rice grain. (C) 2009 Elsevier Ltd. All rights reserved.
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