An alternative analytical method for determining arsenic species in rice by using ion chromatography and inductively coupled plasma-mass spectrometry

•The matrix effect varying with arsenic species was identified for IC-ICP-MS.•A new double-internal-standard method was suggested to circumvent the matrix effect.•Different arsenic species could be determined accurately as well as simultaneously. Qualitative and quantitative determination of total a...

Full description

Saved in:
Bibliographic Details
Published in:Food chemistry 2019-01, Vol.270, p.353-358
Main Authors: Son, Seong Hun, Lee, Won Bae, Kim, Donghun, Lee, Yonghoon, Nam, Sang Ho
Format: Article
Language:English
Subjects:
Analytical method
Arsenic - analysis
Arsenic speciation
Chromatography
Chromatography, High Pressure Liquid
Food Contamination - analysis
Humans
Inductively coupled plasma mass spectrometry
Ion chromatography
Mass Spectrometry
Oryza - chemistry
Rice
Spectrum Analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•The matrix effect varying with arsenic species was identified for IC-ICP-MS.•A new double-internal-standard method was suggested to circumvent the matrix effect.•Different arsenic species could be determined accurately as well as simultaneously. Qualitative and quantitative determination of total arsenic content and arsenic species in rice is very important because rice is one of the main sources of human arsenic intake. However, extraction and determination of arsenic species in rice has been very difficult due to severe matrix interference. An alternative analytical method was developed in this study to determine arsenic species in rice by using ion chromatography coupled to inductively coupled plasma-mass spectrometry. Two internal standards were used. The first internal standard was injected before sample introduction to correct signal change with time. The second internal standard was spiked into the sample to reduce matrix interference. Using the developed method, recoveries of dimethylarsinic acid, monomethylarsonic acid, and inorganic arsenic compared to certified values (NIST SRM 1568b rice flour) were 116%, 107%, and 92%, respectively.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2018.07.066