湖北农业科学 ›› 2020, Vol. 59 ›› Issue (21): 140-143.doi: 10.14088/j.cnki.issn0439-8114.2020.21.029

• 检测分析 • 上一篇    下一篇

UPLC-MS/MS测定小麦中八种除草剂和真菌毒素

赵健, 陈国, 章豪, 吴银良   

  1. 宁波市农业科学研究院,浙江 宁波 315040
  • 收稿日期:2020-07-01 出版日期:2020-11-10 发布日期:2020-12-21
  • 作者简介:赵 健(1979-),男,山东济宁人,高级农艺师,硕士,主要从事农兽药残留分析,(电话)13606587806(电子信箱)akjw2002@163.com。
  • 基金资助:
    宁波市科学技术局社发重大项目(2016C51002)

Determination of 8 residues of herbicide and mycotoxin in wheat by UPLC-MS/MS

ZHAO Jian, CHEN Guo, ZHANG Hao, WU Yin-liang   

  1. Ningbo Academy of Agricultural Sciences, Ningbo 315040, Zhejiang,China
  • Received:2020-07-01 Online:2020-11-10 Published:2020-12-21

摘要: 建立一套基于超高效液相色谱串联质谱仪对小麦中异丙隆、二甲四氯、苯磺隆、苄嘧磺隆、伏马毒素B1、伏马毒素B2、杂色曲霉毒素、T-2等8种除草剂和真菌毒素的检测方法。小麦样品经乙腈-水-甲酸(85/14/1,V/V/V)提取,加入适量石墨化碳净化,净化溶液经浓缩、复溶和离心后,采用Acquity UPLC BEH Shield RP18色谱柱梯度洗脱分离,使用电喷雾离子源正、负模式同时扫描,多反应监测采集数据,基质匹配标准溶液外标法定量。结果表明,8种药物在2~100 μg/L线性关系良好,相关系数均大于0.99;3个添加水平下,所有药物平均加标回收率在76.4%~114.0%,相对标准偏差在1.8%~9.2%,方法定量限为0.4~2.0 μg/kg,该法适用于小麦中8种除草剂和真菌毒素残留同时快速定性定量分析。

关键词: 超高效液相色谱串联质谱仪, 小麦, 除草剂, 真菌毒素

Abstract: A method was developed in wheat by UPLC-MS/MS for determining 8 residues of herbicide and mycotoxin of isoproturon,MCPA,tribenuron methyl,bensulfuron methyl,fumonisin B1, fumonisin B2, sterigmatocystin,T-2. The wheat sample was extracted with acetonitrile-water-formic acid (85/14/1, V/V/V),purified by appropriate amount of PestiCarb. The purified solution was concentrated, redissolved and centrifuged. 8 drugs were separated on ACQUITY UPLC BEH Shield RP18 column by gradient elution, then analyzed by ESI in positive and negative mode under MRM mode. The results showed that the linear range was from 2 to 100 μg/L with the correlation coefficients above 0.99 for all the 8 drugs. The average recoveries of the 8 drugs ranged from 76.4% to 114.0% and the RSD were 1.8%~9.2% in spiked wheat at three levels. The limits of quantification were 0.4~2.0 μg/kg. The method is suitable for the simultaneous determination 8 residues of herbicide and mycotoxins in wheat.

Key words: UPLC-MS/MS, wheat, herbicide, mycotoxin

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