[1]练海贤,王樊,邓雷,等.顶空固相微萃取/气相色谱/质谱法测定水中11种异味物质[J].中国给水排水,2021,37(20):133.
　LIAN Hai-xian,WANG Fan,DENG Lei,et al.Determination of Eleven Odorous Compounds in Water by Headspace Solid Phase Microextraction Coupled with Gas Chromatography-Mass Spectrometry[J].China Water & Wastewater,2021,37(20):133.
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顶空固相微萃取/气相色谱/质谱法测定水中11种异味物质

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第20期 页码: 133 栏目: 出版日期: 2021-10-17
Title:
Determination of Eleven Odorous Compounds in Water by Headspace Solid Phase Microextraction Coupled with Gas Chromatography-Mass Spectrometry
作者:
练海贤1,2，王樊1,2，邓雷1,2，杨创涛1,2，孙国胜1,2
(1.广东粤港供水有限公司，广东深圳518021；2.广东粤海水务股份有限公司，广东深圳518021)
Author(s):
LIAN Hai-xian1,2，WANG Fan1,2，DENG Lei1,2，YANG Chuang-tao1,2，SUN Guo-sheng1,2
(1. Guangdong Yuegang Water Supply Co. Ltd., Shenzhen 518021, China； 2. Guangdong GDH Water Co. Ltd., Shenzhen 518021, China)
关键词:
顶空固相微萃取; 气相色谱-质谱法; 异味物质
Keywords:
headspace solid phase microextraction; gas chromatography-mass spectrometry; odorous compounds
摘要:
建立了顶空固相微萃取/气相色谱/质谱法测定水体中2-甲基异莰醇、土臭素、2-异丙基-3-甲氧基吡嗪、2-异丁基-3-甲氧基吡嗪、4-氯苯甲醚、2,4,6-三氯苯甲醚、2,4,6-三溴苯甲醚、2-叔丁基苯酚、4-叔丁基苯酚、4-丁基苯酚和2,4-二叔丁基苯酚等11种异味物质的分析方法。系统分析了固相微萃取涂层、氯化钠加入量、萃取时间、萃取温度和振荡速度对富集效果的影响。结果表明，选择50/30 μm DVB/CAR/PDMS涂层，在氯化钠加入量为3.5 g/10 mL水样、萃取温度为70 ℃和振荡速度为400 r/min的条件下萃取30 min时，11种异味物质的富集效果最佳。在最优条件下，11种异味物质线性良好，方法检出限为0.70～23.2 ng/L，加标回收率为75.0%～111%，相对标准偏差为4.1%～12.1%。该方法操作简便、快速、灵敏度高，适用于水体中11种异味物质的测定。
Abstract:
A method for determination of eleven odorous compounds such as 2-methylisoborneol, geosmin, 2-isopropyl-3-methoxypyrazine, 2-isobutyl-3-methoxypyrazine, 4-chloroanisole, 2,4,6-trichloroanisole, 2,4,6-tribromoanisole, 2-tert-butylphenol, 4-tert-butylphenol, 4-butylphenol and 2,4-di-tert-butylphenol in water was developed by using headspace solid phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). The effects of solid phase microextraction coating, dosage of sodium chloride, extraction time, extraction temperature and oscillation speed on the extraction performance were investigated. The optimal extraction performance of the eleven odorous compounds was obtained when the operational parameters were as follows: solid phase microextraction coating of 50/30 μm DVB/CAR/PDMS, dosage of sodium chloride of 3.5 g sodium chloride per 10 mL samples, extraction temperature of 70 ℃, oscillation speed of 400 r/min and extraction time of 30 min. Under the optimal conditions, the eleven odorous substances had good linearity. The limits of detection were in the range of 0.70-23.2 ng/L, the recovery rates were in the range of 75.0%-111%, and the relative standard deviations were in the range of 4.1% to 12.1%. The method is simple, rapid and sensitive, and is suitable for the determination of the eleven odorous substances in the water body.

相似文献/References:

[1]张泾凯,朱丽菊,景二丹,等.顶空固相微萃取/气相色谱/质谱法测定水中三氯乙醛[J].中国给水排水,2020,36(24):164.
　ZHANG Jing-kai,ZHU Li-ju,JING Er-dan,et al.Determination of Trichloroacetaldehyde in Water by Headspace Solid-Phase Microextraction and Gas Chromatography/Mass Spectrometry[J].China Water & Wastewater,2020,36(20):164.

更新日期/Last Update: 2021-10-17