Geographical Variation in Total and Inorganic Arsenic Content of Polished (White) Rice

Show simple item record Meharg, A.A. Williams, P.N. Adomako, E.E. Lawgali, Y.Y. Deacon, C. Villada, A. Cambell, R.C.J. Sun, G. Zhu, Y.-G. Feldmann, J. Raab, A. Zhao, F.-J. Islam, R. Hossain, S. Yanai, J. 2013-01-04T12:16:24Z 2017-10-14T12:12:22Z 2013-01-04T12:16:24Z 2017-10-14T12:12:22Z 2009
dc.identifier.citation Environmental Science and Technology 43(5), 1612-1617 en_US
dc.description.abstract An extensive data set of total arsenic analysis for 901 polished (white) grain samples, originating from 10 countries from 4 continents, was compiled. The samples represented the baseline (i.e., not specifically collected from arsenic contaminated areas), and all were for market sale in major conurbations. Median total arsenic contents of rice varied 7-fold, with Egypt (0.04 mg/kg) and India (0.07 mg/kg) having the lowest arsenic content while the U.S. (0.25 mg/kg) and France (0.28 mg/kg) had the highest content. Global distribution of total arsenic in rice was modeled by weighting each country’s arsenic distribution by that country’s contribution to global production. A subset of 63 samples from Bangladesh, China, India, Italy, and the U.S. was analyzed for arsenic species. The relationship between inorganic arsenic content versus total arsenic content significantly differed among countries, with Bangladesh and India having the steepest slope in linear regression, and the U.S. having the shallowest slope. Using country-specific rice consumption data, daily intake of inorganic arsenic was estimated and the associated internal cancer risk was calculated using the U.S. Environmental Protection Agency (EPA) cancer slope. Median excess internal cancer risks posed by inorganic arsenic ranged 30-fold for the 5 countries examined, being 0.7 per 10,000 for Italians to 22 per 10,000 for Bangladeshis, when a 60 kg person was considered. en_US
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.title Geographical Variation in Total and Inorganic Arsenic Content of Polished (White) Rice en_US
dc.type Article en_US

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