Arsenic speciation in rice and risk assessment of inorganic arsenic in Taiwan population
2016
Chen, Hsiu-Ling | Lee, Ching-Chang | Huang, Winn-Jung | Huang, Han-Ting | Wu, Yi-Chen | Hsu, Ya-Chen | Kao, Yi-Ting
This study assessed the total arsenic content and arsenic speciation in rice to determine the health risks associated with rice consumption in various age–gender subgroups in Taiwan. The average total arsenic levels in white rice and brown rice were 116.6 ± 39.2 and 215.5 ± 63.5 ng/g weight (n = 51 and 13), respectively. The cumulative cancer risk among males was 10.4/100,000. The highest fraction of inorganic/total arsenic content in white rice ranged from 76.9 to 88.2 % and from 81.0 to 96.5 % in brown rice. The current study found different arsenic speciation of rice in southern Taiwan, where the famous blackfoot disease has been reported compared with arsenic speciation from other Taiwan areas. Therefore, rice and other grains should be further monitored in southern Taiwan to evaluate whether arsenic contamination is well controlled in this area.
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