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<p>To ensure the quality and safety of plant spices, it is necessary to rapidly and accurately determine pesticide residues in various plant spice raw materials. This study established an extraction method that can effectively extract and purify multiple pesticide residues from plant spices, and employed liquid chromatography-tandem mass spectrometry (LC–MS/MS) for the simultaneous determination of multiple pesticide residues, including carbamates, organophosphates, triazoles, dinitrotoluidines, and anilinopyrimidines, in Asteraceae spices. In this method, acetonitrile was used as the extraction solvent to extract pesticide components from matrices; anhydrous magnesium sulfate, primary secondary amine (PSA), C18 adsorbent, and graphitized carbon black (GCB) were applied for dehydration and purification. Finally, qualitative and quantitative analysis was conducted using an LC–MS/MS instrument. The results showed that the limit of quantification (LOQ) for various pesticides ranged from 0.47 to 0.70&#xa0;μg/kg. The spiked average recoveries in&#xa0;<i>Artemisia capillaris</i>&#xa0;were 83.6–94.8% with relative standard deviations (RSDs) of 2.1–4.8%; in&#xa0;<i>Chamaemelum nobile</i>, average recoveries were 74.9–91.4% with RSDs of 2.2–6.1%; in&#xa0;<i>Artemisia annua</i>, the average spiked recoveries were 77.8–94.4% with RSDs of 1.8–5.5%; and in&#xa0;<i>Matricaria chamomilla</i>, the average recoveries were 77.2–92.0% with RSDs of 2.0–5.1%.</p>

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Determination of Multiple Pesticide Residues in Asteraceae Spices by QuEChERS/Liquid Chromatography-Tandem Mass Spectrometry

  • 期刊论文

  • 发表日期：

    2026年2月23日

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  • Jiangwei Zhu,
  • Yan Zhao,
  • Li Fu

摘要

To ensure the quality and safety of plant spices, it is necessary to rapidly and accurately determine pesticide residues in various plant spice raw materials. This study established an extraction method that can effectively extract and purify multiple pesticide residues from plant spices, and employed liquid chromatography-tandem mass spectrometry (LC–MS/MS) for the simultaneous determination of multiple pesticide residues, including carbamates, organophosphates, triazoles, dinitrotoluidines, and anilinopyrimidines, in Asteraceae spices. In this method, acetonitrile was used as the extraction solvent to extract pesticide components from matrices; anhydrous magnesium sulfate, primary secondary amine (PSA), C18 adsorbent, and graphitized carbon black (GCB) were applied for dehydration and purification. Finally, qualitative and quantitative analysis was conducted using an LC–MS/MS instrument. The results showed that the limit of quantification (LOQ) for various pesticides ranged from 0.47 to 0.70 μg/kg. The spiked average recoveries in Artemisia capillaris were 83.6–94.8% with relative standard deviations (RSDs) of 2.1–4.8%; in Chamaemelum nobile, average recoveries were 74.9–91.4% with RSDs of 2.2–6.1%; in Artemisia annua, the average spiked recoveries were 77.8–94.4% with RSDs of 1.8–5.5%; and in Matricaria chamomilla, the average recoveries were 77.2–92.0% with RSDs of 2.0–5.1%.