TITLE

Sensitive measurement of ultratrace phenols in natural water by purge-and-trap with in situ acetylation coupled with gas chromatography-mass spectrometry

AUTHOR(S)
Ru-Song Zhao; Chuan-Ge Cheng; Jin-Peng Yuan; Ting Jiang; Xia Wang; Jin-Ming Lin
PUB. DATE
January 2007
SOURCE
Analytical & Bioanalytical Chemistry;Jan2007, Vol. 387 Issue 2, p687
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A novel purge-and-trap method coupled with gas chromatography-mass spectrometry (GC-MS) is developed for the analysis of trace and ultratrace phenols based on their derivatization with acetic anhydride. Parameters affecting the extraction efficiency, such as purge temperature, concentration of sodium chloride, purge time, and volume of derivatization reagent, were investigated. The optimized conditions were addition of 150 μL acetic anhydride, purge time of 25 min at the purge temperature of 60 °C with 30% NaCl. The linear range was 0.2–100 μg L−1 for phenols. The limits of detection (LODs) ranged from 0.08 to 0.15 μg L−1 and the relative standard deviations (RSDs) for most of the phenols at the 10 μg L−1level were below 10%. Natural water samples collected from a pool were successfully analyzed using the proposed method. The recovery of spiked water samples was 72.9–84.2%.
ACCESSION #
23616513

 

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