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Quick, easy, cheap, effective, rugged and safe strategy for quantifying cadmium polluted rice

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Cadmium (Cd) pollution is an environmental concern in China. Animals and humans are at risk for Cd poisoning through the consumption of Cd-contaminated rice. A fast and convenient on-site Cd detection tool is required. In this study, we developed a Quick, Easy, Cheap, Effective, Rugged and Safe method to detect Cd in rice. This immunochromatographic method is based on a Cd monoclonal antibody, which recognizes Cd-EDTA complexes. Rice Cd was extracted with 0.1 M HCl under vigorous shaking, transferred to a dispersive solid phase extraction column, and eluted with perchloric acid. Cd recovery was ∼50%. The detection range of our developed method was 0.02–0.8 mg Cd/kg rice with LOD 0.02 mg/kg. The results obtained by immunochromatography which was applied to 71 samples were compared with those obtained via inductively coupled plasma mass spectrometry; the correlation coefficient between these two methods was 0.95. Therefore, our developed method was fast and simple and can be used for on-site Cd detection.
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Keywords: Cereals; immunoassay; immunochromatography

Document Type: Research Article

Affiliations: State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People’s Republic of China

Publication date: November 1, 2016

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