Simultaneous Determination of 147 Pesticide Residues in Traditional Chinese Medicines by GC-MS/MS.
Chao JiLi XiaoXingyu WangMarti Z HuaYifeng WuYifan WangZhiqiang WuXiahong HeDunming XuWenjie ZhengXiaonan LuPublished in: ACS omega (2023)
Determination of pesticide residues remains a challenge in traditional Chinese medicines in which complex compounds may interfere with analysis signals. This study reports the development of a simple, effective, and high-throughput method combining gas chromatography-tandem mass spectrometry (GC-MS/MS) with either QuEChERS or solid phase extraction (SPE) to determine 147 pesticide residues in traditional Chinese medicines simultaneously. In SPE, the mixture of n -hexane and ethyl acetate (1:1, v/v) was selected to extract 147 pesticides in honeysuckle, and the extracted pesticides were determined by GC-MS/MS. The limits of detection for all pesticides were within 0.01-0.05 mg/kg. The recoveries were within 70-120% and the relative standard deviations were below 20% for over 90% pesticides. The coefficients of determination were up to 0.999 for the linearity between MS signals and different concentrations of pesticides (20-200 ng/mL). The analytical performance was confirmed in determining pesticide residues in dried tangerine peel. SPE achieved comparable recoveries for all pesticides compared to the QuEChERS method.
Keyphrases
- gas chromatography
- solid phase extraction
- tandem mass spectrometry
- simultaneous determination
- liquid chromatography tandem mass spectrometry
- ultra high performance liquid chromatography
- ms ms
- high performance liquid chromatography
- liquid chromatography
- molecularly imprinted
- gas chromatography mass spectrometry
- high resolution mass spectrometry
- mass spectrometry
- risk assessment
- high throughput
- emergency department
- oxidative stress