浙江农业科学 ›› 2024, Vol. 65 ›› Issue (12): 3010-3014.DOI: 10.16178/j.issn.0528-9017.20231113

• 食品技术 • 上一篇    下一篇

固相萃取-高效液相色谱-串联质谱法测定小麦中双唑草酮和环吡氟草酮残留

董睿男(), 边海涛(), 勇艳华, 李鹏, 苏春敏, 刘杨   

  1. 大连市检验检测认证技术服务中心 国家市场监管技术创新中心(食用农产品安全快速检测与追溯),辽宁 大连 116630
  • 收稿日期:2023-11-16 出版日期:2024-12-11 发布日期:2024-12-25
  • 通讯作者: 边海涛,男,高级工程师,研究方向为食品与农产品质量安全,E-mail:htbian@126.com
  • 作者简介:董睿男,男,助理工程师,研究方向为食品与农产品检测,E-mail:1806269534@qq.com
  • 基金资助:
    国家市场监督管理总局科技计划项目(2020MK114)

Determination of bipyrazone and cypyrafluone in wheat by solid-phase extraction and high performance liquid chromatography-tandem mass spectrometry

DONG Ruinan(), BIAN Haitao(), YONG Yanhua, LI Peng, SU Chunmin, LIU Yang   

  1. Dalian Center for Certification and Food and Drug Control, Technology Innovation Center of Food Safety Technique of Inspection for State Market Regulation(Rapid Screening and Traceability for Edible Agricultural Product Safety), Dalian 116630, Liaoning
  • Received:2023-11-16 Online:2024-12-11 Published:2024-12-25

摘要:

建立了固相萃取-高效液相色谱-串联质谱法同时测定小麦中双唑草酮和环吡氟草酮残留的方法。小麦样品中双唑草酮和环吡氟草酮采用酸化乙腈提取,氯化钠和无水硫酸镁盐析,HLB固相萃取柱净化,以0.1%甲酸水-0.1%甲酸乙腈为流动相梯度洗脱,ACQUITY UPLC BEH C18色谱柱分离,在电喷雾离子源正模式下,采用多反应监测(MRM)模式测定,基质匹配标准曲线外标法定量。结果表明,双唑草酮和环吡氟草酮在2~100 μg·L-1范围内线性关系良好,相关系数均大于0.998;检出限为2 μg·kg-1,定量限为6 μg·kg-1。在6、20、50 μg·kg-1添加水平下,双唑草酮的平均回收率为93.9%~99.6%,相对标准偏差(RSD)为2.2%~4.8%,环吡氟草酮的平均回收率为83.6%~90.7%,相对标准偏差为1.4%~4.5% (n=6)。该方法灵敏、准确,适用于小麦中双唑草酮和环吡氟草酮残留的测定。

关键词: 固相萃取, 高效液相色谱-串联质谱, 双唑草酮, 环吡氟草酮, 小麦

Abstract:

A method was established for the simultaneous determination of bipyrazone and cypyrafluone in wheat by solid-phase extraction and high performance liquid chromatography-tandem mass spectrometry. Bipyrazone and cypyrafluone in wheat samples were extracted by acidified acetonitrile, salted out by sodium chloride and anhydrous magnesium sulfate, cleaned up by HLB solid phase extraction column, separated by ACQUITY UPLC BEH C18 column with gradient elution of water (containing 0.1% formic acid) and acetonitrile (containing 0.1% formic acid) as the mobile phase, detected by positive electrospray ionization using multiple reaction monitoring (MRM) mode and finally quantified by external standard method of matrix calibration curve. Good linear relationship displays in the concentration range of 2-100 μg·L-1 for bipyrazone and cypyrafluone with correlation coefficient (r) greater than 0.998. The limits of detection of them are 2 μg·kg-1, and the limits of quantitation are 6 μg·kg-1. At three spiked concentration levels of 6, 20 and 50 μg·kg-1, the average recoveries of bipyrazone are 93.9%-99.6%, with relative standard deviations (RSDs) of 2.2%-4.8%, and the average recoveries of cypyrafluone are 83.6%-90.7%, with RSDs of 1.4%-4.5% (n=6). The method is sensitive, accurate and suitable for determination of bipyrazone and cypyrafluone in wheat.

Key words: solid-phase extraction, high performance liquid chromatography-tandem mass spectrometry, bipyrazone, cypyrafluone, wheat

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