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Food Chem. 2014 Sep 15;159:507-11. doi: 10.1016/j.foodchem.2014.03.057. Epub 2014 Mar 21.

Simultaneous determination of Se, trace elements and major elements in Se-rich rice by dynamic reaction cell inductively coupled plasma mass spectrometry (DRC-ICP-MS) after microwave digestion.

Author information

  • 1Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, Jiangxi 330200, China. Electronic address: weiyihua08@163.com.
  • 2Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, Jiangxi 330200, China.
  • 3Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, Jiangxi 330200, China. Electronic address: luolinguang@126.com.

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).

Copyright © 2014 Elsevier Ltd. All rights reserved.

KEYWORDS:

Correlation analysis; DRC-ICP-MS; Major elements; Se; Se-rich rice; Trace elements

PMID:
24767089
[PubMed - in process]
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