固相萃取-气相色谱－三重四级杆质谱法测定蔬菜中五氯硝基苯和百菌清残留量
固相萃取-气相色谱－三重四级杆质谱法测定蔬菜中五氯硝基苯和百菌清残留量
目的建立固相萃取-气相色谱－三重四级杆质谱法测定蔬菜中五氯硝基苯和百菌清残留量的检测方法。方法样品采用正己烷溶剂提取, 串联Florisil-Carb固相萃取小柱净化, 采用多重反应监测(multiple reaction monitoring, MRM)模式检测, 内标法进行定量。结果五氯硝基苯和百菌清的平均回收率分别在78.7%~91.6%、80.2%~90.8%之间; 检出限(S/N=3)为0.005 mg/kg和0.004 mg/kg。结论该方法具有灵敏度高、分离效果好、重复性好的特点, 适用于大批量蔬菜样品中五氯硝基苯和百菌清杀菌剂残留检测的要求。
ObjectiveTo establish a method for the determination of quintozene and chlorothalonil residues in vegetables by solid phase extraction-gas chromatography-triple quadrupole mass spectrometry. MethodsThe samples were extracted with N-hexane solvent, purified with Florisil-carb solid phase extraction column in series, detected by multiple reaction monitoring (MRM) mode, and quantified by internal standard method. ResultsThe average recoveries of quintozene and chlorothalonil were 78.7%–91.6% and 80.2%–90.8%, and the detection limits (S/N=3) were 0.005 mg/kg and 0.004 mg/kg, respectively. ConclusionsThis method has the characteristics of high sensitivity, good separation effect and good repeatability. It is suitable for the detection of pentachloronitrobenzene and chlorothalonil residues in a large number of vegetable samples.
标题：固相萃取-气相色谱－三重四级杆质谱法测定蔬菜中五氯硝基苯和百菌清残留量
英文标题：Determination of pentachloronitrobenzene and chlorothalonil residues in vegetables by solid phase extraction-gas chromatography triple quadrupole mass spectrometry
作者：
曹忠波 辽宁省疾病预防控制中心
张媛媛 辽宁省疾病预防控制中心
刘晓晶 辽宁省疾病预防控制中心
华正罡 辽宁省疾病预防控制中心
中文关键词:固相萃取,五氯硝基苯和百菌清,气相色谱－三重四级杆质谱联用仪,
英文关键词:solid phase extraction,pentachloronitrobenzene and chlorothalonil,gas chromatography triple quadrupole mass spectrometer,
发表日期：2020-04-04
页:
[1]