YUZhi-yong,WANGJuan,HANSi-qi,et al.Gas Chromatography-Tandem Mass Spectrometry for Determination of Five Emerging Contaminants in Drinking Water[J].China Water & Wastewater,2023,39(14):148-154.
Gas Chromatography-Tandem Mass Spectrometry for Determination of Five Emerging Contaminants in Drinking Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第14期
Page:
148-154
Column:
Date of publication:
2023-07-17
- Keywords:
- drinking water; gas chromatography-mass spectrometry; high throughout analysis; emerging contaminant; liquid-liquid extraction
- Abstract:
- This paper investigated the pollution of emerging contaminants in the main water supply plants in Beijing and established a gas chromatography-tandem mass spectrometry method for simultaneous determination of five emerging contaminants in drinking water and source water, so as to meet the detection demand of 1,4-dioxane, dichloroacetonitrile, dibromoacetonitrile, fenoprop and pendimethalin in drinking water. The type, volume of the extractant, salinity of water samples, and the detection conditions of gas chromatography-mass spectrometry were optimized. The salinity of water samples with volume of 100 mL was adjusted to 2%, and dichloromethane with volume of 25 mL was used as the extractant. After enrichment and concentration, the samples were separated by HP-5 ms capillary column and analyzed quantitative by MRM mode. The linear correlation coefficients of the five emerging contaminants were all greater than 0.999, the spiked recoveries were 73.3%-113%, the detection limits were 0.002-0.06 μg/L, and the relative standard deviations were 3.7%-12%. The method is suitable for the determination of trace 1,4-dioxane, dichloroacetonitrile, dibromoacetonitrile, fenoprop and pendimethalin in drinking water and source water, and meets the testing requirements of the Guidelines for Drinking Water Quality proposed by the World Health Organization. The method was applied to detect drinking water samples from the main water supply plants in Beijing from 2018 to 2020, and the results showed that none of the five emerging contaminants were detected, indicating that the health risk was low.
Last Update:
2023-07-17