水中挥发性有机物的吹扫捕集/气相色谱-质谱法测定分析
Determination of Volatile Organic Compounds in Water by Purge and Capture/Gas Chromatography-Mass Spectrometry
刘佳1
作者信息
- 1. 天津泰达水检测评价有限公司 天津 300457
- 折叠
摘要
采用吹扫捕集/气相色谱-质谱法测定生活饮用水中 27 种挥发性有机物.取 25 mL生活饮用水样品,经吹扫、捕集、富集净化样品,用气相色谱-质谱法开展定性、定量分析.结果表明:在 0.40～40 μg/L(间、对-二甲苯为 0.80～80 μg/L)线性范围内,各组分工作曲线的线性相关系数不小于 0.995;用 0.40 μg/L和 32.00 μg/L 2 种质量浓度水平加标,回收率为 73.0%～109%,7 次测定的相对标准偏差为 0.3%～9.6%;测定下限为 0.015～0.220 μg/L.该方法处理操作简便,稳定性强,测定灵敏、准确,能够满足对生活饮用水中挥发性有机物进行定性、定量分析的需求.
Abstract
27 volatile organic compounds in drinking water were determined by purge and capture/gas chromatography-mass spectrometry.25 mL of drinking water samples were purged,captured,enriched,purified,and analyzed qualitatively and quantitatively by gas chromatography-mass spectrometry.The results show that the linear correlation coefficientr of the working curves of each component is not less than 0.995 within the linear range of 0.40-40 μg/L(m-xylene and p-xylene:0.80-80 μg/L).After spiking with two mass concentration levels of 0.40 μg/L and 32.00 μg/L,the recovery rate is 73.0%-109%with the relative standard deviation of 0.3%-9.6%for seven determinations.The lower limit of determination is 0.015 μg/L-0.220 μg/L.This method has the advantages of simple treatment operation,strong stability,sensitive and accurate determination,and can meet the needs of qualitative and quantitative analysis of volatile organic compounds in drinking water.
关键词
吹扫捕集/气相色谱-质谱法/挥发性有机物Key words
purge and capture/gas chromatography-mass spectrometry/volatile organic compounds引用本文复制引用
出版年
2024
NETL
NSTL
万方数据