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A convenient and sensitive method for haloacetic acid analysis in tap water by on‐line field‐amplified sample‐stacking CE – ESI ‐ MS
Author(s) -
Hung SihHua,
Her GuorRong
Publication year - 2013
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201300649
Subject(s) - haloacetic acids , tap water , dichloroacetic acid , chemistry , trichloroacetic acid , chromatography , stacking , detection limit , flow injection analysis , sample preparation , analytical chemistry (journal) , chlorine , environmental science , biochemistry , organic chemistry , environmental engineering
In this study, we propose a simple strategy based on flow injection and field‐amplified sample‐stacking CE – ESI ‐ MS / MS to analyze haloacetic acids ( HAA s) in tap water. Tap water was passed through a desalination cartridge before field‐amplified sample‐stacking CE – ESI ‐ MS / MS analysis to reduce sample salinity. With this treatment, the signals of the HAA s increased 300‐ to 1400‐fold. The LOD s for tap water analysis were in the range of 10 to 100 ng/L, except for the LOD of monochloroacetic acid (1 μg/L in selected‐ion monitoring mode detection). The proposed method is fast, convenient, and sensitive enough to perform on‐line analysis of five HAA s in the tap water of T aipei C ity. Four HAA s, including trichloroacetic acid, dichloroacetic acid, dibromoacetic acid, and monobromoacetic acid, were detected at concentrations of approximately 1.74, 1.15, 0.16, and 0.15 ppb, respectively.