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1.中国医科大学 公共卫生学院,辽宁 沈阳 110001
2.北京市疾病预防控制中心,北京 100027
3.北京建筑大学 城市雨水系统与水环境教育部重点实验室,北京 102616
张 晶,博士,研究员,研究方向:饮用水及食品危害物分析 ,E-mail:brightjing@163.com
收稿日期:2024-11-26,
修回日期:2025-01-02,
录用日期:2025-01-06,
纸质出版日期:2025-07-15
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杜明月,詹未,陈喆,张永鑫,张晶.液液萃取/气相色谱-四极杆静电场轨道阱质谱同时测定饮用水中11种嗅味物质[J].分析测试学报,2025,44(07):1399-1405.
DU Ming-yue,ZHAN Wei,CHEN Zhe,ZHANG Yong-xin,ZHANG Jing.Simultaneous Determination of 11 Odorants in Drinking Water by Liquid-Liquid Extraction/Gas Chromatography-Quadrupole Electrostatic Field Orbitrap Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(07):1399-1405.
杜明月,詹未,陈喆,张永鑫,张晶.液液萃取/气相色谱-四极杆静电场轨道阱质谱同时测定饮用水中11种嗅味物质[J].分析测试学报,2025,44(07):1399-1405. DOI: 10.12452/j.fxcsxb.241126558.
DU Ming-yue,ZHAN Wei,CHEN Zhe,ZHANG Yong-xin,ZHANG Jing.Simultaneous Determination of 11 Odorants in Drinking Water by Liquid-Liquid Extraction/Gas Chromatography-Quadrupole Electrostatic Field Orbitrap Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(07):1399-1405. DOI: 10.12452/j.fxcsxb.241126558.
基于液液萃取和气相色谱-四极杆静电场轨道阱质谱联用技术(GC-Orbitrap-MS),建立了快速分析饮用水中11种常见嗅味物质的高灵敏检测方法。考察了质谱的4种扫描模式在分析嗅味物质时的性能,选择平行反应监测扫描(PRM)模式进行定量分析。在优化条件下,所有物质的标准曲线具有较好线性(
r
2
>
0.99),方法检出限和定量下限分别为0.1~2.0 ng·L
-1
和0.4~6.7 ng·L
-1
;自来水中嗅味物质在3个浓度下的加标回收率为 76.1%~120%,相对标准偏差(
n
=6)为4.1%~18%,可满足定量分析要求。采用该方法对北京市17份水源水和44份末梢水进行分析,除2-甲氧基-3,5-二甲基吡嗪和2,4,6-三氯苯甲醚外各物质均有检出。该研究可为饮用水嗅味监测或相关事件提供技术支撑。
A highl
y sensitive determination method capable of rapidly analyzing 11 common odorants in drinking water was successfully established using liquid-liquid extraction and gas chromatography-quadrupole electrostatic field orbitrap mass spectrometry(GC-Orbitrap-MS). Four different scanning modes,GC gradient elution and other mass parameters were thoroughly investigated. Under the optimal conditions,the standard curves of all target substances showed good linearity with correlation coefficients(
r
²) greater than 0.99. The method detection limits were between 0.1 and 2.0 ng·L
-1
,and the quantitation limits were between 0.4 and 6.7 ng·L
-1
. Recoveries of the target odorants at three spiking levels in tap water samples ranged from 76.1% to 120%,with relative standard deviations(
n
=6) of 4.1%-18%. The established method was applied to analyze 17 source water samples and 44 terminal water samples collected from Beijing.Results showed that all target odorants were detected except for 2-methoxy-3,5-dimethylpyrazine and 2,4,6-trichloroanisole. This method is accurate and sensitive and may provide technical support for drinking water monitoring and relevant incidents responding.
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