海南师范大学学报（自然科学版）2023，Vol.36Issue(4)：429-434,6.DOI:10.12051/j.issn.1674-4942.2023.04.011
气相色谱-质谱联用仪测定柑橘类水果中2,4-滴的残留量
Determination of 2,4-D Residues in Citrus Fruits by Gas Chromatography-mass Spectrometry
摘要
Abstract
To develop a method for the determination of 2,4-D residues in citrus fruits by gas chromatography-mass spec-trometry(GC-MS),2,4-D was extracted with diethyl ether under acidic conditions,and derived into 2,4-D butylate by n-butanol with sulfuric acid as catalyst.The residual amount of 2,4-D in citrus was determined by gas chromatography-mass spectrometry and quantified by external standard method.The results showed that 2,4-D had a good linearity in the range of 0-0.5 μg/mL,and the correlation coefficient(R2)was greater than 0.999.The detection limit and quantitation limit of the method were 0.002 5 mg/kg and 0.005 mg/kg respectively.The recoveries ranged of the 2,4-D were between 86.61%to 99.32%when 0.005 mg/kg,0.01 mg/kg and 0.1 mg/kg of 2,4-D were added to citrus.Meanwhile,the relative standard devi-ations(RSDs)were 2.08%to 4.46%(n = 6).The method had high sensitivity,stable recovery rate,accurate qualitative and quantitative analysis,and was suitable for the determination of 2,4-D in citrus fruits.关键词
2,4-滴/气相色谱-质谱联用仪/柑橘类水果Key words
2,4-D/gas chromatography-mass spectrometry instrument/citrus fruit分类
化学化工引用本文复制引用
陈丽香,许佩勤..气相色谱-质谱联用仪测定柑橘类水果中2,4-滴的残留量[J].海南师范大学学报（自然科学版）,2023,36(4):429-434,6.基金项目
广东省工程技术研究中心平台建设项目(粤科函产字[2020]141号) （粤科函产字[2020]141号）
广州市创新环境计划项目(2021-00-01-13-5007-0001) （2021-00-01-13-5007-0001）
