Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China.
Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China.
Food Chem. 2018 Apr 15;245:653-658. doi: 10.1016/j.foodchem.2017.08.100. Epub 2017 Sep 1.
A novel effervescence assisted dispersive liquid-liquid microextraction method based on cohesive floating organic drop has been developed for simultaneous determination of triazine herbicides and triazole fungicides in aqueous samples followed by ultra-high pressure liquid chromatography tandem a triple quadrupole mass spectrometer. In this method, 1-undecanol as extractant was well dispersed by effervescence. In order to obtain relatively high extraction efficiency, the effects of salt, volume of effervescence mixture, volume of extraction solvent and temperature were investigated. Under the optimum conditions, the proposed method showed good linearity within the range of 0.05-10μgL with correlation coefficients of 0.9987-0.9999. The recoveries of analytes were in the range of 72.4-101.5% with relative standard deviations ranging from 2.6% to 11.7%. The limits of detection were varied from 2.7 to 9.7ngL. This method has been successfully used to simultaneously analyze triazine herbicides and triazole fungicides in surface waters and grape juice.
一种基于凝聚浮滴的新型鼓泡辅助分散液液微萃取方法已被开发用于同时测定水样中的三嗪类除草剂和三唑类杀菌剂，随后采用超高压液相色谱串联三重四极杆质谱进行分析。在该方法中，1-十一醇通过鼓泡得以很好地分散。为了获得较高的萃取效率，考察了盐、鼓泡混合物体积、萃取溶剂体积和温度的影响。在最佳条件下，该方法在 0.05-10μgL 范围内呈良好线性，相关系数为 0.9987-0.9999。分析物的回收率在 72.4-101.5%范围内，相对标准偏差在 2.6%-11.7%范围内。检出限为 2.7-9.7ngL。该方法已成功用于同时分析地表水和葡萄汁中的三嗪类除草剂和三唑类杀菌剂。
