Total Arsenic, Cadmium, and Lead Determination in Brazilian Rice Samples Using ICP-MS

This study is aimed at investigating a suitable method for rice sample preparation as well as validating and applying the method for monitoring the concentration of total arsenic, cadmium, and lead in rice by using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Various rice sample preparatio...

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Bibliographic Details
Published in:Journal of analytical methods in chemistry 2016-01, Vol.2016 (2016), p.1-9
Main Authors: Tiglea, Paulo, Arakaki, Edna Emy Kumagai, Carvalho, Maria de Fátima Henriques, Arauz, Luciana Juncioni de, Buzzo, Márcia Liane, Mataveli, Lidiane Raquel Verola, Matsuzaki, Richard
Format: Article
Language:English
Subjects:
Arsenic
Cadmium
Carcinogens
Chemical properties
Consumption
Contamination
Heating
Laboratories
Lead
Legislation
Linearity
Mass spectrometry
Mathematical analysis
Methods
Parameters
Public health
Rice
Scientific imaging
Seafood
Studies
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Summary:This study is aimed at investigating a suitable method for rice sample preparation as well as validating and applying the method for monitoring the concentration of total arsenic, cadmium, and lead in rice by using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Various rice sample preparation procedures were evaluated. The analytical method was validated by measuring several parameters including limit of detection (LOD), limit of quantification (LOQ), linearity, relative bias, and repeatability. Regarding the sample preparation, recoveries of spiked samples were within the acceptable range from 89.3 to 98.2% for muffle furnace, 94.2 to 103.3% for heating block, 81.0 to 115.0% for hot plate, and 92.8 to 108.2% for microwave. Validation parameters showed that the method fits for its purpose, being the total arsenic, cadmium, and lead within the Brazilian Legislation limits. The method was applied for analyzing 37 rice samples (including polished, brown, and parboiled), consumed by the Brazilian population. The total arsenic, cadmium, and lead contents were lower than the established legislative values, except for total arsenic in one brown rice sample. This study indicated the need to establish monitoring programs for emphasizing the study on this type of cereal, aiming at promoting the Public Health.
ISSN:2090-8865
2090-8873
DOI:10.1155/2016/3968786