LEIQiong,HEJuan,ZHAOHai-ling,et al.Determination of VOCs in Water Using Purge and Trap/Gas Chromatography-Mass Spectrometry Method[J].China Water & Wastewater,2025,41(8):130-136.
Determination of VOCs in Water Using Purge and Trap/Gas Chromatography-Mass Spectrometry Method
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第8期
Page:
130-136
Column:
Date of publication:
2025-04-17
- Keywords:
- purge and trap; gas chromatography-mass spectrometry method; volatile organic compounds（VOCs）; drinking water
- Abstract:
- This study optimized the purge conditions and selected appropriate chromatographic columns in section 4.2 of Standard Examination Methods for Drinking Water-Part 8: Organic Indices (GB/T 5750.8-2023), to develop a purge and trap/gas chromatography-mass spectrometry method for the simultaneous and rapid determination of 56 volatile organic compounds (VOCs) in drinking water. The method is developed in accordance with Standard Examination Methods for Drinking Water (GB/T 5750-2023), and is designed to fulfill the daily monitoring requirements for various VOCs in drinking water. After optimization, the detectable linear range for 56 VOCs was determined to be 0.1-100 μg/L, with correlation coefficients ranging from 0.999 0 to 0.999 7. The detection limits for each target analyte were found to be between 0.003 7 μg/L and 0.52 μg/L. The average recoveries for low-concentration, medium-concentration, and high-concentration standard samples (n≥6) ranged from 73.0% to 118%, while the relative standard deviation (RSD) was less than 10%. The method features a wide linear range, a low detection limit, high accuracy, and simple operation, making it highly adaptable for implementation in most laboratories, particularly in fundamental research settings.
Last Update:
2025-04-17