Inorganic arsenic and trace elements in Ghanaian grain staples

Adomako, Eureka E. and Williams, Paul N. and Deacon, Claire and Meharg, Andrew A. (2011) Inorganic arsenic and trace elements in Ghanaian grain staples. Environmental Pollution, 159 (10). 2435 - 2442. ISSN 0269-7491

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A total of 549 samples of rice, maize, wheat, sorghum and millet were obtained from markets in Ghana, the EU, US and Asia. Analysis of the samples, originating from 21 countries in 5 continents, helped to establish global mean trace element concentrations in grains; thus placing the Ghanaian data within a global context. Ghanaian rice was generally low in potentially toxic elements, but high in essential nutrient elements. Arsenic concentrations in rice from US (0.22 mg/kg) and Thailand (0.15 mg/kg) were higher than in Ghanaian rice (0.11 mg/kg). Percentage inorganic arsenic content of the latter (83%) was, however, higher than for US (42%) and Thai rice (67%). Total arsenic concentration in Ghanaian maize, sorghum and millet samples (0.01 mg/kg) was an order of magnitude lower than in Ghanaian rice, indicating that a shift from rice-centric to multigrain diets could help reduce health risks posed by dietary exposure to inorganic As.

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Journal Article
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Environmental Pollution
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02 May 2012 10:27
Last Modified:
21 Nov 2022 22:14