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Mass-shift mode to quantify low level 129I in environmental samples by ICP-MS/MS.
- Source :
- JAAS (Journal of Analytical Atomic Spectrometry); Jun2022, Vol. 37 Issue 6, p1309-1317, 9p
- Publication Year :
- 2022
-
Abstract
- In this study, a new measurement method to quantify <superscript>129</superscript>I at low level by ICP-MS/MS (Agilent 8900) was developed. This new method is based on a new measurement medium and mass-shift mode. The developed measurement medium is composed of 0.1% NH<subscript>4</subscript>OH, 10 g L<superscript>−1</superscript> ascorbic acid and 3% Tween® 20 which considerably decrease the memory effect and increase the sensitivity. Different reactional gases were compared in on-mass and mass-shift modes and finally, O<subscript>2</subscript> was selected in mass-shift mode. The mass-shift mode with O<subscript>2</subscript> allows having the most quantitative iodine oxidation rate while eliminating isobaric and polyatomic interferences. Isobaric interference due to <superscript>129</superscript>Xe<superscript>+</superscript> is eliminated following a charge transfer in the reaction/collision cell and polyatomic interferences are eliminated with the second quadrupole. This new measurement method improves the limit of detection of <superscript>129</superscript>I to 11 mBq L<superscript>−1</superscript>, without chemical treatment. [ABSTRACT FROM AUTHOR]
- Subjects :
- ENVIRONMENTAL sampling
VITAMIN C
DETECTION limit
ACCELERATOR mass spectrometry
Subjects
Details
- Language :
- English
- ISSN :
- 02679477
- Volume :
- 37
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- JAAS (Journal of Analytical Atomic Spectrometry)
- Publication Type :
- Academic Journal
- Accession number :
- 157382075
- Full Text :
- https://doi.org/10.1039/d2ja00128d