农药学学报2017，Vol.19Issue(4)：518-522,5.DOI:10.16801/j.issn.1008-7303.2017.0068
香蕉中2,4-滴残留的快速检测及其消解动态
Rapid determination and dissipation dynamics of 2,4-D in Musa paradisiaca
摘要
Abstract
An ultra high performance liquid chromatography-tandem mass spectrometry method was developed to study the dissipation dynamics and final residues of 2,4-D in Musa paradisiaca. The M. paradisiaca samples were extracted by acetonitrile, salted out and stratified by sodium chloride. Using negative ion ionization and multiple reaction monitoring, the results showed that there was a good linear relationship between the concentrations of 2,4-D and the corresponding peak area in the range of 1.0 μg/L to 10 μg/L. The limits of detection and quantification of the method were 0.0015 mg/kg and 0.005 mg/kg, respectively. The average recoveries was in the range of 93% to 99% with the relative standard deviations from 2.5% to 3.0% at three spiked levels of 0.005, 0.05 and 0.5 mg/kg. The method is suitable for the 2,4-D residues detection in M. paradisiaca. The results of field experiments show that the half-life of 2,4-D was 5.4 days, indicating that 2,4-D is a non-persistent and easily degradable pesticide. The final residue test results showed that 2,4-D was < LOQ in the M. paradisiaca 60 days after harvest, at dosages of of 23, 35 and 53 mg/kg (effective component concentration), respectively.关键词
香蕉/2,4-滴/残留/快速检测/消解动态/超高效液相色谱-串联质谱Key words
Musa paradisiaca/2/4-D/residue/rapid determination/dissipation dynamics/ultra high performance liquid chromatography-tandem mass spectrometry分类
农业科技引用本文复制引用
林涛,黎其万,刘宏程,邵金良,赵金化,范泽剑..香蕉中2,4-滴残留的快速检测及其消解动态[J].农药学学报,2017,19(4):518-522,5.基金项目
云南省社会发展科技计划 (2012CA005) （2012CA005）
云南省科技创新平台建设计划 (2014DA001). （2014DA001）
