The extraction and speciation of arsenic in rice flour by HPLC–ICP-MS

Several solvent mixtures and techniques for the extraction of arsenic (As) species from rice flour samples prior to their analysis by HPLC–ICP-MS were investigated. Microwave-assisted extraction using water at 80 °C for 30 min provided the highest extraction efficiency. Total recoveries of extracted...

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Veröffentlicht in:	Talanta (Oxford) 2008-10, Vol.77 (1), p.427-432
Hauptverfasser:	Narukawa, Tomohiro, Inagaki, Kazumi, Kuroiwa, Takayoshi, Chiba, Koichi
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Arsenic - analysis Arsenic - chemistry Arsenic compounds Chemistry Chromatographic methods and physical methods associated with chromatography Chromatography, High Pressure Liquid - methods Exact sciences and technology Extraction HPLC–ICP-MS Indexing in process Mass Spectrometry - methods Microwave-assisted digestion Microwaves Oryza - chemistry Other chromatographic methods Q1 Rice flour Solvents Speciation Spectrometric and optical methods Ultrasonics
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Zusammenfassung:	Several solvent mixtures and techniques for the extraction of arsenic (As) species from rice flour samples prior to their analysis by HPLC–ICP-MS were investigated. Microwave-assisted extraction using water at 80 °C for 30 min provided the highest extraction efficiency. Total recoveries of extracted As species were in good agreement with the total As concentrations determined by ICP-MS after microwave-assisted acid digestion of the samples. Arsenite [As(III)], arsenate [As(V)] and dimethylarsinic acid (DMAA) were the main species detected in rice flour samples.
ISSN:	0039-9140 1873-3573
DOI:	10.1016/j.talanta.2008.07.005