LIU Chang.Determination of Sulfonamides in Vegetables by QuEChERS-high Performance Liquid Chromatography-tandem Mass Spectrometry[J].HEILONGJIANG AGRICULTURAL SCIENCES,2018,(06):101-105.[doi:10.11942/j.issn1002-2767.2018.06.0101]
蔬菜中二十种磺胺类抗生素残留的QuEChERS-超高效液相色谱-串联质谱法检测
- Title:
- Determination of Sulfonamides in Vegetables by QuEChERS-high Performance Liquid Chromatography-tandem Mass Spectrometry
- 关键词:
- QuEChERS; 超高效液相色谱-串联质谱; 蔬菜; 磺胺; 多残留
- Keywords:
- QuEChERS; high performance liquid chromatography-tandem mass spectrometry; vegetables; sulfonamides; more residuals
- 文献标志码:
- A
- 摘要:
- 建立了QuEChERS结合超高效液相色谱-串联质谱仪检测不同种蔬菜中20种磺胺类兽药多残留的检测方法。称取10.0 g样品,以1.0%乙酸乙腈10 mL为提取剂,6 g硫酸镁、1.5 g醋酸钠为萃取盐,使用液-液萃取静置分层,取8 mL上清液经150 mg乙二胺-N-丙基硅烷(PSA)和 900 mg无水硫酸镁净化。再提取净化后的溶液5 mL,在40 ℃下用氮吹仪浓缩,残渣用200 μL乙腈,800 μL水溶解。超高效液相色谱-串联质谱仪采用正离子多反应监测模式,内标法定量。结果表明:在0.5~100 μg/L范围内,20种磺胺类兽药线性良好,相关系数均大于0.99,3个不同添加浓度的回收率在67.4%~116.6% 范围内,相对标准偏差在0.1%~12.8% 范围内,均可满足定量分析要求,该方法操作简单快速,适用于大批量蔬菜样品同时检测兽药多残留。
- Abstract:
- The methods of detection of 20 sulfonamides in different kinds of vegetables were established by improved QuEChERS combining the ultra-high performance liquid chromatography-tandem mass spectrometer.Samples weight in 10.0 g were extracted by 10 mL 1.0% acetic acid in acetonitrile,6 g magnesium sulfate and 1.5 g sodium acetate and liquid-liquid extraction was used to stand stratification.8 mL supernatant fluid were purified by 150 mg ethylenediamine -N- propyl silane (PSA) and 900 mg magnesium sulfate.Then 5 mL supernatant fluid were concentrated under 40℃ with blowing nitrogen.The residues were dissolved by 200 mL acetonitrile and 800 mL water.The positive ion multi-reaction monitoring mode was used by the super high performance liquid chromatography-tandem mass spectrometer and quantify was used by the internal standard method.The results showed that the range of 0.5-100 μg?L-1,20 sulfonamides were in good linear and the correlation coefficients were greater than 0.99.Three different recovery were between 67.4 and 116.6,standard of standard deviation were between 0.1 and 12.8,all of these were met the requirements of quantitative analysis,and the method was simply rapidly and was suitable for large quantities of vegetables samples at the same time to test veterinary drug residues.
参考文献/References:
[1]Economou V,Gousia P.Agriculture and food animals as a source of antimicrobial-resistant bacteria[J].Infect Drug Resist,2015,8(4):49-61.
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备注/Memo
收稿日期:2018-03-06作者简介:刘畅(1988-),女,硕士,农艺师,从事药残检测研究。E-mail:y150030@126.com。