Abstract
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.
Original language | English |
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Pages (from-to) | 1536-1541 |
Number of pages | 6 |
Journal | Environmental Pollution |
Volume | 158 |
Issue number | 5 |
Early online date | 4 Jan 2010 |
DOIs | |
Publication status | Published - May 2010 |
Keywords
- arsenic
- China
- grain
- phophorus
- rice
- paddy rice
- risk-assessment
- human health
- soil
- speciation
- plants
- seedlings
- toxicity
- contamination