[1]郭巧媛,王春苗,孙道林,等.HS-SPME-GC-MS/MS测定16种硫醚类嗅味物质[J].中国给水排水,2022,38(6):132-138.
　GUOQiao-yuan,WANGChun-miao,SUNDao-lin,et al.Simultaneous Determination of 16 Thioether Odorous Substances in Drinking Water by HS-SPME-GC-MS/MS[J].China Water & Wastewater,2022,38(6):132-138.
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HS-SPME-GC-MS/MS测定16种硫醚类嗅味物质

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第6期 页码: 132-138 栏目: 出版日期: 2022-03-17
Title:
Simultaneous Determination of 16 Thioether Odorous Substances in Drinking Water by HS-SPME-GC-MS/MS
作者:
郭巧媛1,2， 王春苗1,2， 孙道林3， 郭庆园1,4， 苏命1,2， 杨敏1,2， 于建伟1,2
（1.中国科学院生态环境研究中心 饮用水科学与技术重点实验室，北京 100085；2.中国科学院大学，北京 100049；3.中国电建集团北京勘测设计研究院有限公司，北京 100024；4.盐城工学院 环境科学与工程学院，江苏 盐城 224051）
Author(s):
GUO　Qiao-yuan1，2， WANG　Chun-miao1，2， SUN　Dao-lin3， GUO　Qing-yuan1，4， SU　Ming1，2， YANG　Min1，2， YU　Jian-wei1，2
（1. Key Laboratory of Drinking Water Science and Technology， Reserch Center for Eco?Environmental Sciences， Chinese Academy of Sciences， Beijing 100085， China； 2. University of Chinese Academy of Sciences， Beijing 100049， China； 3. PowerChina Beijing Engineering Corporation Limited， Beijing 100024， China； 4. School of Environmental Science & Engineering， Yancheng Institute of Technology， Yancheng 224051， China）
关键词:
饮用水;  嗅味物质;  硫醚;  顶空固相微萃取;  气相色谱-串联质谱
Keywords:
drinking water;  odorous substances;  thioether;  HS-SPME;  GC-MS/MS
摘要:
针对可导致饮用水中腥臭味/沼泽味/腐败味的硫醚类物质，基于顶空固相微萃取与气相色谱三重四极杆串联质谱联用，建立了可同时快速分析水中16种硫醚类嗅味物质的方法。对萃取纤维类型、盐浓度、萃取温度、萃取和解吸时间等条件进行了优化，确定的最佳顶空固相微萃取条件为：水样加入20%NaCl，采用DVB/PDMS/Carbon WR萃取纤维于45 ℃条件下萃取30 min，在250 ℃条件下解吸180 s。16种硫醚的标准曲线具有较好的线性（R2 >0.99），检出限为0.2~2.9 ng/L，超纯水和原水加标回收率分别为80.4%~105.4%和78.3%~108.2%，相对标准偏差分别为0.7%~13.4%和1.6%~14.1%，可满足饮用水及水源中硫醚类嗅味物质的快速检测。采用该方法对三个水厂的原水进行了分析，有二甲基二硫醚（4.2~45.3 ng/L）、二甲基三硫醚（1.9~6.1 ng/L）和二乙基二硫醚（N.D.~1.5 ng/L）检出，值得关注。
Abstract:
Owing to fishy/boggy/rotten taste in drinking water caused by thioethers, a rapid detection method based on headspace-solid phase microextraction (HS-SPME) coupled with gas chromatography-triple quadrupole tandem mass spectrometry (GC-MS/MS) was developed for simultaneous determination of 16 thioether odorous substances in drinking water. The conditions such as SPME fiber type, salt concentration,extraction temperature, extraction and desorption times were optimized, and the optimal HS-SPME conditions were determined as follows: the water sample was added with 20% NaCl, extracted by DVB/PDMS/Carbon WR coated fiber at 45 ℃ for 30 min, and eventually desorbed at 250 ℃ for 180 s. The standard curves of 16 thioethers showed good linearity (R2 >0.99), and the detection limits ranged from 0.2 to 2.9 ng/L. The recovery rates of thioethers in ultrapure water and raw water samples were in the ranges of 80.4%-105.4% and 78.3%-108.2%, respectively, and the relative standard deviations were in the ranges of 0.7%-13.4% and 1.6%-14.1%, respectively, indicating that the method could meet the requirements for rapid detection of thioether odorous substances in drinking and source water. This method was applied to analyze raw water samples from three water plants, and dimethyl disulfide (4.2-45.3 ng/L), dimethyl trisulfide (1.9-6.1 ng/L) and diethyl disulfide (N.D.-1.5 ng/L) were detected in the samples. This phenomenon deserves our attention.

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更新日期/Last Update: 2022-03-17