Determination of anions in certified reference materials by ion chromatography

Joung Hae Lee, Jong Seung Kim, Byung Hoon Min, Sun Tae Kim, Jong Hun Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Certified reference materials (CRMs) which can be used to analyze anions in aqueous solution were prepared. Using ion chromatography, highly concentrated CRM solutions containing seven different anions (F-, Cl-, NO2-, NO3-, Br-, PO43-, and SO42-, 100 mgkg-1 each) could be directly separated without making any diluted solutions. To obtain optimized separation conditions in this highly concentrated sample solution, a number of experiments including change of eluent composition and flow-rate of the eluents and injection volumes were attempted. The best results were observed when a mixture of 2.0 mM Na2CO3 and 2.5 mM NaHCO3 as an eluent was used with conditions of 0.5 mlmin-1 as flow-rate and a 5 μl sample loop. The resolution value reached to 1.5, which is sufficient for quantitative analysis and all of seven different anions were perfectly separated within 15 min. Copyright (C) 1998 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)85-90
Number of pages6
JournalJournal of Chromatography A
Volume813
Issue number1
DOIs
Publication statusPublished - 1998 Jul 10
Externally publishedYes

Keywords

  • Inorganic anions

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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