CHENDong.Static Headspace-Trap Multi-extraction-Gas Chromatography for Simultaneous Determination of 6 Halogenated Compounds in Water[J].China Water & Wastewater,2025,41(12):130-136.
Static Headspace-Trap Multi-extraction-Gas Chromatography for Simultaneous Determination of 6 Halogenated Compounds in Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第12期
Page:
130-136
Column:
Date of publication:
2025-06-17
- Keywords:
- static headspace; trap; gas chromatography (GC); halogenated compounds
- Abstract:
- The impact of disinfection by-products in drinking water on human health is becoming increasingly significant. Currently, the detection methods for conventional disinfection by-products, such as haloalkanes and haloacetic acids, are relatively well-established. However, research on the detection of emerging disinfection by-products, such as halogenated anisoles, remains limited. An analytical method for the determination of six halogenated compounds in water, including trichloromethane, carbon tetrachloride, dichlorobromomethane, chlorodibromomethane, tribromomethane, and 2,4-dichloroanisole, was developed using static headspace-trap multi-extraction-gas chromatography (GC). The optimization was conducted on several key conditions of this method, including headspace equilibrium time, headspace sampling time, headspace equilibrium temperature, cycle extraction times, and NaCl dosage. Under the optimal conditions, the method exhibited a linear correlation coefficient ranging from 0.997 3 to 0.999 2, a detection limit between 0.002 g/L and 0.212 g/L, a quantification limit from 0.007 g/L to 0.707 g/L, relative standard deviation (RSD) within 1.7% to 7.1%, and recoveries in the range of 89.3% to 107.0%. This method is characterized by rapid sampling, accuracy, the absence of solvent contamination, high sensitivity, and the ability to simultaneously perform trace analysis of six halogenated compounds in water.
Last Update:
2025-06-17