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Issue 5, 2005
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Determination of 226Ra at ultratrace level in mineral water samples by sector field inductively coupled plasma mass spectrometry

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Abstract

An analytical procedure has been proposed for the determination of 226Ra at the low femtogram per ml concentration level in mineral water samples using double focusing sector field ICP-MS (ICP-SFMS). For the pre-concentration and separation of radium from the matrix elements in water a tandem of a laboratory-prepared filter, based on MnO2, and Eichrom “Sr-specific” resin was used. The recovery of the method was determined to be 70.5%. The limit of detection for 226Ra determination was 0.02 fg ml−1, including a pre-concentration factor of 10. In addition, uranium concentration and uranium isotope ratios were measured by ICP-SFMS. In several mineral water samples with a relatively high uranium content, 226Ra concentrations were found between 0.7–15 fg ml−1. The effective dose of the contribution was calculated using the radionuclide concentration and dose conversion factors from the World Health Organization, WHO (1993). Assuming a mineral water consumption of 2 l d−1, a slightly higher calculated dose than the suggested limit for drinking water (0.1 mSv y−1) was found in some samples.

Graphical abstract: Determination of 226Ra at ultratrace level in mineral water samples by sector field inductively coupled plasma mass spectrometry

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Publication details

The article was received on 28 Feb 2005, accepted on 21 Mar 2005 and first published on 22 Apr 2005


Article type: Paper
DOI: 10.1039/B503011K
Citation: J. Environ. Monit., 2005,7, 514-518
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    Determination of 226Ra at ultratrace level in mineral water samples by sector field inductively coupled plasma mass spectrometry

    M. V. Zoriy, Z. Varga, C. Pickhardt, P. Ostapczuk, R. Hille, L. Halicz, I. Segal and J. S. Becker, J. Environ. Monit., 2005, 7, 514
    DOI: 10.1039/B503011K

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