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Determination of Bromine and Iodine Speciation in Drinking Water Using High Performance Liquid Chromatography‐Inductively Coupled Plasma‐Mass Spectrometry
Author(s) -
Liu Wei,
Yang Hongxia,
Li Bing,
Xu Siqi
Publication year - 2011
Publication title -
geostandards and geoanalytical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.037
H-Index - 73
eISSN - 1751-908X
pISSN - 1639-4488
DOI - 10.1111/j.1751-908x.2010.00033.x
Subject(s) - chemistry , bromine , chromatography , detection limit , inductively coupled plasma mass spectrometry , elution , iodine , ion chromatography , polyatomic ion , inductively coupled plasma , mass spectrometry , analytical chemistry (journal) , ion , plasma , physics , organic chemistry , quantum mechanics
A specific method for the determination of bromine and iodine species in drinking water was developed by using high performance liquid chromatography‐ICP‐MS. An ICS‐A23 ion chromatography column was chosen for the separation of species, with the mobile phase being 0.03 mol l −1 ammonium carbonate at a flow rate of 0.8 ml min −1 . The detection limits for BrO 3 − , Br − , IO 3 − and I − were 0.032, 0.063, 0.008 and 0.012 μg l −1 , respectively. Spectroscopic interferences were only observed in blank samples and mainly resulted from the argon‐potassium polyatomic ion ( 40 Ar 39 K + ). However, this interference was negligible because of the elution and complete separation from that of iodinate under optimised conditions. The method developed was successfully applied to twenty‐two samples of drinking water obtained from a supermarket. Results indicated that 36.4% of the samples had BrO 3 − concentrations exceeding the Chinese national limit for drinking water of 10 μg l −1 .