11.5%双氟·酰嘧磺隆水分散粒剂的超高效液相色谱-串联质谱法检测

Determination for Florasulam·amidosulfuron 11.5% WG by Ultra High Performance Liquid Chromatography-electrospray Tandem Mass Spectrometry

建立了同时测定双氟磺草胺和酰嘧磺隆的超高效液相色谱-串联质谱分析方法。以0.2%甲酸水溶液-乙腈为流动相,采用电喷雾(ES^+)模式测定,多离子反应监测(MRM)模式扫描,外标法定量。双氟磺草胺和酰嘧磺隆均具有良好的线性关系,平均回收率分别为92.31%~97.13%、90.73%~96.77%,相对标准偏差分别为2.78%~4.49%、1.12%~2.22%,最小检测浓度分别为5.67μg/L和7.67μg,L。该方法高效、灵敏,为水体中微量双氟磺草胺和酰嘧磺隆的检测提供参考。

The determination of florasulam and amidosulfuron by ultra high performance liquid chromatographyelectrospray tandem mass spectrometry（UPLC-MS/MS） was established. Using the 0.2% formic acid and acetonitrile as mobile phase, the sample was detected by ES＋ in the MRM mode. The result showed that the calibration curves were linear The average recoveries were 92.31%-97.13% and 90.73%-96.77%, with relative standard deviations 2.78% -4.49% andl. 12%-2.22%, and the limit of quantity were 5.67 μg/L and 7.67 μg/L for florasulam and amidosulfuron, respectively. The method was fast, simple, accurate and it was the reliable trace analysis of the florasulam and amidosulfuron in water.