Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7598315 | Food Chemistry | 2014 | 5 Pages |
Abstract
A quick and accurate method was devised to determine Se, As, Ba, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Sr and Zn in Se-rich rice samples by microwave digestion and inductively coupled plasma-mass spectrometry (ICP-MS). Spectral interferences on Se were eliminated using methane as a reaction gas in the dynamic reaction cell (DRC). Rhodium was used as an internal standard to compensate for sample matrix effects. A rice-certified reference material (CRM) (GBW 10010) was used to verify the accuracy of the method. The method detection limits were 0.001-0.03 mg/kg, analyte recoveries were 85-108% and precisions (RSDs) ranged from 2.1% to 5.8%. Correlation analysis showed that the Se concentrations in the Se-rich rice samples correlated well with the Cu concentrations (r = 0.53, p < 0.05).
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Yi Hua Wei, Jin Yan Zhang, Da Wen Zhang, Lin Guang Luo, Tian Hua Tu,