1. Comparison of on-site field measured inorganic arsenic in rice with laboratory measurements using a field deployable method: Method validation.
- Author
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Mlangeni AT, Vecchi V, Norton GJ, Raab A, Krupp EM, and Feldmann J
- Subjects
- Chromatography, High Pressure Liquid, Food Contamination analysis, Malawi, Mass Spectrometry, Arsenic analysis, Chemistry Techniques, Analytical methods, Oryza chemistry
- Abstract
A commercial arsenic field kit designed to measure inorganic arsenic (iAs) in water was modified into a field deployable method (FDM) to measure iAs in rice. While the method has been validated to give precise and accurate results in the laboratory, its on-site field performance has not been evaluated. This study was designed to test the method on-site in Malawi in order to evaluate its accuracy and precision in determination of iAs on-site by comparing with a validated reference method and giving original data on inorganic arsenic in Malawian rice and rice-based products. The method was validated by using the established laboratory-based HPLC-ICPMS. Statistical tests indicated there were no significant differences between on-site and laboratory iAs measurements determined using the FDM (p = 0.263, ά = 0.05) and between on-site measurements and measurements determined using HPLC-ICP-MS (p = 0.299, ά = 0.05). This method allows quick (within 1 h) and efficient screening of rice containing iAs concentrations on-site., (Copyright © 2018 Elsevier Ltd. All rights reserved.)
- Published
- 2018
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