Accurate analysis of chromium in foodstuffs by using inductively coupled plasma mass spectrometry with a collision-reaction interface

Seung Ha Lee, Ji Ae Kim, Seung Hyeon Choi, Young Soon Kim, DalWoong Choi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Food is a common source of chromium (Cr) exposure. However, it is difficult to analyze Cr in complex food matrices by using inductively coupled plasma mass spectrometry (ICP-MS) because the major isotope, 52Cr, is masked by interference generated by the sample matrix and the plasma gas. Among the systems available to minimize interference, the recently developed collision-reaction interface (CRI) has a different structure relative to that of other systems (e.g., collision cell technology, octopole reaction system, and dynamic reaction cell) that were designed as a chamber between the skimmer cone and quadrupole. The CRI system introduces collision or reaction gas directly into the plasma region through a modified hole of skimmer cone. We evaluated the use of an CRI ICP-MS system to minimize polyatomic interference of 52Cr and 53Cr in various foodstuffs. The 52Cr concentrations measured in the standard mode were 2-3 times higher than the certified values. This analytical method based on an ICP-MS system equipped with a CRI of helium gas was effective for Cr analysis in complex food matrices.

Original languageEnglish
Pages (from-to)1689-1692
Number of pages4
JournalBulletin of the Korean Chemical Society
Volume34
Issue number6
DOIs
Publication statusPublished - 2013 Jun 20

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Keywords

  • Chromium
  • Collision-reaction interface
  • Food
  • ICP-MS

ASJC Scopus subject areas

  • Chemistry(all)

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