TITLE:
Measurement of Arsenic Species in Infant Rice Cereals by Liquid Chromatography Inductively Coupled Plasma Mass Spectrometry
AUTHORS:
John D. Brockman, John W. N. Brown IV
KEYWORDS:
Arsenic Speciation; Epidemiology; Infant Rice Cereal; Liquid Chromatography Inductively Coupled Plas-ma Mass Spectrometry
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.3 No.10,
October
30,
2012
ABSTRACT: Infant rice cereals were analyzed for total arsenic, inorganic arsenic (i-As) and the organic arsenic species monomethylarsonoic acid (MMA) and dimethylarsinic acid (DMA) using liquid chromatography inductively coupled plasma mass spectrometry (LC-ICP-MS). Total arsenic concentrations in the samples ranged from 110 ng/gup to 420 ng/g. The i-As in the rice cereals accounted for 33% to 77% of the total arsenic. The observed variability between infant rice cereals makes a dietary survey approach to accessing arsenic exposures difficult.