Determination of Seven Kinds of Haloacetic Acids in Drinking Water by In Situ Derivatization-Headspace Gas Chromatography
10.19756/j.issn.0253-3820.241204
- VernacularTitle:原位衍生-顶空气相色谱法测定饮用水中7种卤乙酸
- Author:
Deng-Kun LI
1
;
Han-Qing WANG
;
Shu-Lin ZHUANG
;
Lei LI
;
Yu-Lan YANG
;
Dong-Xin JIANG
;
Jia-You LU
;
Jun LIU
Author Information
1. 南京市浦口区疾病预防控制中心,南京 210031;南京医科大学公共卫生学院,南京 211166
- Keywords:
In situ derivatization;
Headspace gas chromatography;
Drinking water;
Disinfection byproduct;
Haloacetic acids
- From:
Chinese Journal of Analytical Chemistry
2025;53(8):1342-1351
- CountryChina
- Language:Chinese
-
Abstract:
Haloacetic acids(HAAs),as a class of disinfection byproducts in drinking water,pose potential threats to human health,so the rapid,accurate and simultaneous detection of HAAs is of great significance for ensuring drinking water safety.Aiming at the challenges in HAAs detection and risk analysis,a novel method for synchronous rapid detection of seven kinds of HAAs in drinking water based on in situ derivatization technology and headspace gas chromatography was developed in this study.Through single-factor optimization experiments,the optimal reaction parameters for in situ derivatization were determined,including the type and dosage of salting-out agent,the acidity of reaction system,the amount of phase transfer catalyst,the dosage of derivatization agent,and the extraction solvent volume.Methodologic validation showed that the seven kinds of HAAs exhibited excellent linear relationships within their respective detection concentration ranges(R2>0.998).The method detection limits(MDLs)ranged from 0.04 to 0.33 μg/L,and the limits of quantification(LOQs)were between 0.14 and 1.34 μg/L.For real water samples,the average spiked recoveries of the seven HAAs ranged from 90.9%to 107.7%,with relative standard deviation(RSDs)between 1.55%and 6.49%,and the HAAs contents in all tested samples were below the limits specified in the Standards for Drinking Water Quality(GB 5749-2022)of China.This method was featured with simple operation,fast analysis speed,high sensitivity,and good accuracy,providing an efficient and reliable technical support for routine monitoring of HAAs contaminants in drinking water and showing promising application value for widespread promotion.
