Screening of pesticide residues in Traditional Chinese Medicines using modified QuEChERS sample preparation procedure and LC-MS/MS analysis

•108 pesticides in Traditional Chinese Medicines were determined simultaneously.•Traditional Chinese Medicines are difficult matrices for residue analysis.•C18 and anhydrous MgSO4 were used as the dSPE sorbent.•92% of real samples were detected with pesticide residues.•Paclobutrazol showed a high re...

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Published inJournal of chromatography. B, Analytical technologies in the biomedical and life sciences Vol. 1152; p. 122224
Main Authors Li, Rui-Xing, Li, Min-Min, Wang, Tao, Wang, Tie-Lin, Chen, Jie-Yin, Francis, Frédéric, Fan, Bei, Kong, Zhi-Qiang, Dai, Xiao-Feng
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 01.09.2020
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ISSN1570-0232
1873-376X
1873-376X
DOI10.1016/j.jchromb.2020.122224

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Abstract •108 pesticides in Traditional Chinese Medicines were determined simultaneously.•Traditional Chinese Medicines are difficult matrices for residue analysis.•C18 and anhydrous MgSO4 were used as the dSPE sorbent.•92% of real samples were detected with pesticide residues.•Paclobutrazol showed a high residue level in O. japonicas. A robust and high-throughput method was developed for the determination of 108 pesticide residues in Traditional Chinese Medicines (TCMs) simultaneously using a combination of UHPLC-MS/MS analysis and the modified QuEChERS method. Extraction was carried out in acetonitrile containing 0.75% (v/v) acetic acid with ultrasonication for 15 min; MgSO4 and C18 were used as the dispersive-solid phase extraction sorbents. The method exhibited good linearity (r2 > 0.9901), in addition to good selectivity, precision and repeatability. More than 92% of pesticides exhibited high rates or recovery in the 70–120% range. This method showed high sensitivity, with Limits of Quantitation in the 0.01–20 ng/mL range in Cortex Moutan, and 0.01–50 ng/mL in the other TCMs. The method was employed for the analysis of 39 real samples from different habitats, and pesticides were detected in 92.3% of the samples, with 26 pesticides being detected in these three TCMs. More than four pesticides were detected in a third of the samples. Among them, tebuconazole was detected in all the three TCMs with 0.22–22.02 μg/kg concentration, which was lower than the provisions in GB 2763-2019 (50 μg/kg). In addition, the paclobutrazol detection rate in Ophiopogon japonicus was 100%, and the detected concentrations of 9 samples exceeded the Maximum Residue Levels defined for vegetables (50 μg/kg). Considering there are no regulations that govern the limits of pesticide residues in the three TCMs in China, we recommend the acceleration of efforts to introduce appropriate regulations.
AbstractList •108 pesticides in Traditional Chinese Medicines were determined simultaneously.•Traditional Chinese Medicines are difficult matrices for residue analysis.•C18 and anhydrous MgSO4 were used as the dSPE sorbent.•92% of real samples were detected with pesticide residues.•Paclobutrazol showed a high residue level in O. japonicas. A robust and high-throughput method was developed for the determination of 108 pesticide residues in Traditional Chinese Medicines (TCMs) simultaneously using a combination of UHPLC-MS/MS analysis and the modified QuEChERS method. Extraction was carried out in acetonitrile containing 0.75% (v/v) acetic acid with ultrasonication for 15 min; MgSO4 and C18 were used as the dispersive-solid phase extraction sorbents. The method exhibited good linearity (r2 > 0.9901), in addition to good selectivity, precision and repeatability. More than 92% of pesticides exhibited high rates or recovery in the 70–120% range. This method showed high sensitivity, with Limits of Quantitation in the 0.01–20 ng/mL range in Cortex Moutan, and 0.01–50 ng/mL in the other TCMs. The method was employed for the analysis of 39 real samples from different habitats, and pesticides were detected in 92.3% of the samples, with 26 pesticides being detected in these three TCMs. More than four pesticides were detected in a third of the samples. Among them, tebuconazole was detected in all the three TCMs with 0.22–22.02 μg/kg concentration, which was lower than the provisions in GB 2763-2019 (50 μg/kg). In addition, the paclobutrazol detection rate in Ophiopogon japonicus was 100%, and the detected concentrations of 9 samples exceeded the Maximum Residue Levels defined for vegetables (50 μg/kg). Considering there are no regulations that govern the limits of pesticide residues in the three TCMs in China, we recommend the acceleration of efforts to introduce appropriate regulations.
A robust and high-throughput method was developed for the determination of 108 pesticide residues in Traditional Chinese Medicines (TCMs) simultaneously using a combination of UHPLC-MS/MS analysis and the modified QuEChERS method. Extraction was carried out in acetonitrile containing 0.75% (v/v) acetic acid with ultrasonication for 15 min; MgSO4 and C18 were used as the dispersive-solid phase extraction sorbents. The method exhibited good linearity (r2 > 0.9901), in addition to good selectivity, precision and repeatability. More than 92% of pesticides exhibited high rates or recovery in the 70-120% range. This method showed high sensitivity, with Limits of Quantitation in the 0.01-20 ng/mL range in Cortex Moutan, and 0.01-50 ng/mL in the other TCMs. The method was employed for the analysis of 39 real samples from different habitats, and pesticides were detected in 92.3% of the samples, with 26 pesticides being detected in these three TCMs. More than four pesticides were detected in a third of the samples. Among them, tebuconazole was detected in all the three TCMs with 0.22-22.02 μg/kg concentration, which was lower than the provisions in GB 2763-2019 (50 μg/kg). In addition, the paclobutrazol detection rate in Ophiopogon japonicus was 100%, and the detected concentrations of 9 samples exceeded the Maximum Residue Levels defined for vegetables (50 μg/kg). Considering there are no regulations that govern the limits of pesticide residues in the three TCMs in China, we recommend the acceleration of efforts to introduce appropriate regulations.A robust and high-throughput method was developed for the determination of 108 pesticide residues in Traditional Chinese Medicines (TCMs) simultaneously using a combination of UHPLC-MS/MS analysis and the modified QuEChERS method. Extraction was carried out in acetonitrile containing 0.75% (v/v) acetic acid with ultrasonication for 15 min; MgSO4 and C18 were used as the dispersive-solid phase extraction sorbents. The method exhibited good linearity (r2 > 0.9901), in addition to good selectivity, precision and repeatability. More than 92% of pesticides exhibited high rates or recovery in the 70-120% range. This method showed high sensitivity, with Limits of Quantitation in the 0.01-20 ng/mL range in Cortex Moutan, and 0.01-50 ng/mL in the other TCMs. The method was employed for the analysis of 39 real samples from different habitats, and pesticides were detected in 92.3% of the samples, with 26 pesticides being detected in these three TCMs. More than four pesticides were detected in a third of the samples. Among them, tebuconazole was detected in all the three TCMs with 0.22-22.02 μg/kg concentration, which was lower than the provisions in GB 2763-2019 (50 μg/kg). In addition, the paclobutrazol detection rate in Ophiopogon japonicus was 100%, and the detected concentrations of 9 samples exceeded the Maximum Residue Levels defined for vegetables (50 μg/kg). Considering there are no regulations that govern the limits of pesticide residues in the three TCMs in China, we recommend the acceleration of efforts to introduce appropriate regulations.
A robust and high-throughput method was developed for the determination of 108 pesticide residues in Traditional Chinese Medicines (TCMs) simultaneously using a combination of UHPLC-MS/MS analysis and the modified QuEChERS method. Extraction was carried out in acetonitrile containing 0.75% (v/v) acetic acid with ultrasonication for 15 min; MgSO₄ and C18 were used as the dispersive-solid phase extraction sorbents. The method exhibited good linearity (r² > 0.9901), in addition to good selectivity, precision and repeatability. More than 92% of pesticides exhibited high rates or recovery in the 70–120% range. This method showed high sensitivity, with Limits of Quantitation in the 0.01–20 ng/mL range in Cortex Moutan, and 0.01–50 ng/mL in the other TCMs. The method was employed for the analysis of 39 real samples from different habitats, and pesticides were detected in 92.3% of the samples, with 26 pesticides being detected in these three TCMs. More than four pesticides were detected in a third of the samples. Among them, tebuconazole was detected in all the three TCMs with 0.22–22.02 μg/kg concentration, which was lower than the provisions in GB 2763-2019 (50 μg/kg). In addition, the paclobutrazol detection rate in Ophiopogon japonicus was 100%, and the detected concentrations of 9 samples exceeded the Maximum Residue Levels defined for vegetables (50 μg/kg). Considering there are no regulations that govern the limits of pesticide residues in the three TCMs in China, we recommend the acceleration of efforts to introduce appropriate regulations.
A robust and high-throughput method was developed for the determination of 108 pesticide residues in Traditional Chinese Medicines (TCMs) simultaneously using a combination of UHPLC-MS/MS analysis and the modified QuEChERS method. Extraction was carried out in acetonitrile containing 0.75% (v/v) acetic acid with ultrasonication for 15 min; MgSO and C18 were used as the dispersive-solid phase extraction sorbents. The method exhibited good linearity (r  > 0.9901), in addition to good selectivity, precision and repeatability. More than 92% of pesticides exhibited high rates or recovery in the 70-120% range. This method showed high sensitivity, with Limits of Quantitation in the 0.01-20 ng/mL range in Cortex Moutan, and 0.01-50 ng/mL in the other TCMs. The method was employed for the analysis of 39 real samples from different habitats, and pesticides were detected in 92.3% of the samples, with 26 pesticides being detected in these three TCMs. More than four pesticides were detected in a third of the samples. Among them, tebuconazole was detected in all the three TCMs with 0.22-22.02 μg/kg concentration, which was lower than the provisions in GB 2763-2019 (50 μg/kg). In addition, the paclobutrazol detection rate in Ophiopogon japonicus was 100%, and the detected concentrations of 9 samples exceeded the Maximum Residue Levels defined for vegetables (50 μg/kg). Considering there are no regulations that govern the limits of pesticide residues in the three TCMs in China, we recommend the acceleration of efforts to introduce appropriate regulations.
ArticleNumber 122224
Author Fan, Bei
Kong, Zhi-Qiang
Li, Rui-Xing
Wang, Tie-Lin
Chen, Jie-Yin
Francis, Frédéric
Dai, Xiao-Feng
Li, Min-Min
Wang, Tao
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Keywords Modified QuEChERS
UHPLC-MS/MS
Multiresidues
Pesticides
Traditional Chinese Medicine
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Snippet •108 pesticides in Traditional Chinese Medicines were determined simultaneously.•Traditional Chinese Medicines are difficult matrices for residue analysis.•C18...
A robust and high-throughput method was developed for the determination of 108 pesticide residues in Traditional Chinese Medicines (TCMs) simultaneously using...
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SubjectTerms acetic acid
acetonitrile
China
Chromatography, High Pressure Liquid - methods
cortex
Drug Contamination
Drugs, Chinese Herbal - analysis
Drugs, Chinese Herbal - standards
habitats
Limit of Detection
Linear Models
liquid chromatography
magnesium sulfate
maximum residue limits
Medicine, Chinese Traditional
Modified QuEChERS
Multiresidues
Ophiopogon japonicus
Oriental traditional medicine
paclobutrazol
pesticide residues
Pesticide Residues - analysis
Pesticides
Reproducibility of Results
screening
sorbents
tandem mass spectrometry
Tandem Mass Spectrometry - methods
tebuconazole
Traditional Chinese Medicine
UHPLC-MS/MS
ultrasonic treatment
vegetables
Title Screening of pesticide residues in Traditional Chinese Medicines using modified QuEChERS sample preparation procedure and LC-MS/MS analysis
URI https://dx.doi.org/10.1016/j.jchromb.2020.122224
https://www.ncbi.nlm.nih.gov/pubmed/32559653
https://www.proquest.com/docview/2415302303
https://www.proquest.com/docview/2985989930
Volume 1152
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