Determination of 226Ra in mineral waters by high-resolution inductively coupled plasma mass spectrometry after sample preparation by cation exchange

Chang J. Park, Pil J. Oh, Hae Y. Kim, Dong Soo Lee

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226Ra in mineral waters was determined by high-resolution inductively coupled plasma mass spectrometry (HR-ICP-MS). The analytical result was compared with that by liquid scintillation counting. A cation exchange technique was used for separation of 226Ra from matrix elements in the water samples. Analyte recovery efficiency was better than 97% and matrix separation efficiency was higher than 99% for Ca, the major matrix element. The method detection limit of 0.01 pg L-1 was achieved which was much lower than the United States Environmental Protection Agency required detection limit of 1 pg L-1. 226Ra concentrations in several Korean mineral waters are presented.

Original languageEnglish
Pages (from-to)223-227
Number of pages5
JournalJournal of Analytical Atomic Spectrometry
Issue number2
Publication statusPublished - 1999 Jan 1


All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Spectroscopy

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