A Modified QuEChERS Method for the Simultaneous and Rapid Determination of Pesticides and Polycyclic Aromatic Hydrocarbons in Roasted Coffee by Gas Chromatography-Tandem Mass Spectrometry
Scientific Papers|更新时间:2025-11-05
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A Modified QuEChERS Method for the Simultaneous and Rapid Determination of Pesticides and Polycyclic Aromatic Hydrocarbons in Roasted Coffee by Gas Chromatography-Tandem Mass Spectrometry
Journal of Instrumental AnalysisVol. 44, Issue 10, Pages: 2122-2133(2025)
WANG De-jin,WU Xing-qiang,CHEN Bao,TONG Kai-xuan,XIE Yu-jie,LIU Xin-yue,SHI Zhi-hong,FAN Chun-lin,WANG Wen-wen,CHEN Hui.A Modified QuEChERS Method for the Simultaneous and Rapid Determination of Pesticides and Polycyclic Aromatic Hydrocarbons in Roasted Coffee by Gas Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(10):2122-2133.
WANG De-jin,WU Xing-qiang,CHEN Bao,TONG Kai-xuan,XIE Yu-jie,LIU Xin-yue,SHI Zhi-hong,FAN Chun-lin,WANG Wen-wen,CHEN Hui.A Modified QuEChERS Method for the Simultaneous and Rapid Determination of Pesticides and Polycyclic Aromatic Hydrocarbons in Roasted Coffee by Gas Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(10):2122-2133. DOI: 10.12452/j.fxcsxb.241202569.
A Modified QuEChERS Method for the Simultaneous and Rapid Determination of Pesticides and Polycyclic Aromatic Hydrocarbons in Roasted Coffee by Gas Chromatography-Tandem Mass Spectrometry
In this study,an analytical method for the simultaneous determination of 94 pesticides and 18 polycyclic aromatic hydrocarbons(PAHs) in roasted coffee was developed using a modified QuEChERS method combined with gas chromatography-tandem mass spectrometry(GC-MS/MS). The type and volume of extraction solvent,and the type and amount of filler used for sample extraction and purification were compared. The optimal experimental conditions finally selected were 10 mL of hydration volume,10 mL of acetonitrile-acetone(1∶1,volume ratio) as extraction solvent and 300 mg of primary secondary amine (PSA),300 mg of octadecylsilane(C
18
),and 900 mg of magnesium sulfate anhydrous(MgSO
4
) as purification packing material. Under the optimal experimental conditions,all compounds showed good linearity with correlation coefficients(
r
2
) greater than 0.99. The limits of detection(LODs) and the limits of quantification(LOQs) of 94 pesticides were 0.1-3.0 μg/kg and 0.2-10.0 μg/kg,respectively,and those of 18 PAHs were 0.3-3.0 μg/kg and 1.0-10.0 μg/kg,respectively. The mean recoveries of 94 pesticides and 18 PAHs at 1-,2-,and 10-fold of LOQ spiking levels were 75.4%-117% and 74.9%-115%,respectively,with relative standard deviations(RSDs,
n
=6) not more than 14%. The method was successfully applied to 30 batches of commercially available roasted coffee samples. A total of 3 pesticides and 8 PAHs were detected,namely dichlobenil(0.4-0.6 µg/kg),heptachlor(0.6-1.2 µg/kg),hexachlorobenzene(0.5-1.5 µg/kg) and acenaphthene(5.4-12.4 µg/kg),anthracene(4.9-12.0 µg/kg),chrysene(1.2-2.1 µg/kg),fluoranthene(6.8-17.1 µg/kg),fluorene(16.7-35.9 µg/kg),naphthalene(19.1-40.9 µg/kg),phenanthrene(31.5-43.7 µg/kg),pyrene (4.6-14.7 µg/kg). The results indicate that further research is necessary to monitor pesticides and PAHs in roasted coffee. The method is characterized by simple,rapid,and sensitive pre-treatment operation,which is suitable for the simultaneous detection of p
esticides and PAHs in roasted coffee and can provide important technical and data support for the monitoring and quality safety of pesticide residues and PAHs in roasted coffee.
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