CHEN Feng,ZHANG Bao-feng,HE Ping,et al.Determination of Thiabendazole in Water by Solid Phase Extraction/Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry[J].China Water & Wastewater,2021,37(22):109-112.
固相萃取/液相色谱-电喷雾串联质谱法测定水中噻菌灵
- Title:
- Determination of Thiabendazole in Water by Solid Phase Extraction/Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry
- 关键词:
- 地表水; 固相萃取; 液相色谱-电喷雾串联质谱; 噻菌灵
- Keywords:
- surface water; solid phase extraction; liquid chromatography-electrospray ionization tandem mass spectrometry; thiabendazole
- 摘要:
- 研究了固相萃取/液相色谱-电喷雾串联质谱联用技术(SPE/LC-ESIMS/MS)分析水中噻菌灵的方法。样品经SPE小柱萃取后,采用Agilent ZORBAX SB-C18色谱柱,以0.2%甲酸乙腈和0.2%甲酸水为流动相进行梯度洗脱,用电喷雾离子源电离,正离子多反应监测模式下进行定性、定量分析。噻菌灵在0~100 μg/L浓度范围内线性良好,相关系数达0.999 2,方法检出限为0.16 ng/L;高、中、低三个加标水平下(5.0、20.0和100 ng)实际样品加标回收率范围为74.7%~86.5%,相对标准偏差范围为6.1%~12.9%。应用本方法检测了杭州市68个地表水样品的噻菌灵浓度,其中25个样品有检出。
- Abstract:
- A method of solid phase extraction/liquid chromatography-electrospray ionization tandem mass spectrometry (SPE/LC-ESI-MS/MS) for determination of thiabendazole in surface water was explored. The samples were extracted by SPE column. Liquid chromatography separation was performed on an Agilent ZORBAX SB-C18 column with a gradient elution of 0.2% formic acid acetonitrile and 0.2% formic acid as the mobile phases. Electrospray ionization and qualitative and quantitative analysis were carried out under the positive ion multi-reaction monitoring mode. Good linearity was observed in the range of 0-100 μg/L thiabendazole with correlation coefficient 0.999 2, and the limit of detection (LOD) was 0.16 ng/L. At three different standard addition levels (5.0, 20.0 and 100 ng), average recovery rates of thiabendazole in practical samples ranged from 74.7% to 86.5% with RSD between 6.1% and 12.9%. The method was applied to detect thiabendazole concentration in 68 samples of surface water in Hangzhou, and thiabendazole in 25 samples was detected.
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