Development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leaves
An efficient method using multiwalled carbon nanotubes (MWCNTs) as dispersive solid-phase extraction sorbent was established for determining chlorantraniliprole residues in fresh tea leaves, which are known to be a troublesome matrix containing abundant pigments, via gas chromatography with an elect...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2019-12-01
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| Series: | Food Science and Human Wellness |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213453019301752 |
| _version_ | 1797725089097056256 |
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| author | Tengfei Liu Minghui Dong Fengjie Zhou Daifeng Yang Xueming Zhang |
| author_facet | Tengfei Liu Minghui Dong Fengjie Zhou Daifeng Yang Xueming Zhang |
| author_sort | Tengfei Liu |
| collection | DOAJ |
| description | An efficient method using multiwalled carbon nanotubes (MWCNTs) as dispersive solid-phase extraction sorbent was established for determining chlorantraniliprole residues in fresh tea leaves, which are known to be a troublesome matrix containing abundant pigments, via gas chromatography with an electron capture detector. Acetonitrile was used as the extraction solvent, with sodium chloride enhancing the analyte partition in the organic phase. The optimal mixture of MWCNTs and primary secondary amine (PSA) was based on the distribution of the target analyte recovery and on the clean-up efficiency; while matrix-matched calibration was recommended to combat the matrix effect. Mean recoveries of 95.2%–108.8% were obtained with intraday and interday precisions of less than 7.9% and 10.3%, respectively. Good linearity was observed for concentrations of 0.02–1.0 mg/kg with a correlation coefficient of 0.9984. The limits of detection and quantification were 0.005 mg/kg and 0.02 mg/kg, respectively. The method was employed to investigate the dissipation dynamics of chlorantraniliprole in fresh tea leaves with real field samples. Consequently, the dissipation rates of chlorantraniliprole in fresh tea leaves followed pseudo-first-order kinetics with a half-life of 1.9 d, and the average chlorantraniliprole residue content was below 0.02 mg/kg with a harvest withholding period of 14 d. Keywords: Multiwalled carbon nanotubes, Fresh tea leaves, Chlorantraniliprole, Dispersive solid-phase extraction, Gas chromatography |
| first_indexed | 2024-03-12T10:26:05Z |
| format | Article |
| id | doaj.art-db27ee59a29a4ae780f42d292d9f8b6e |
| institution | Directory Open Access Journal |
| issn | 2213-4530 |
| language | English |
| last_indexed | 2024-03-12T10:26:05Z |
| publishDate | 2019-12-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Food Science and Human Wellness |
| spelling | doaj.art-db27ee59a29a4ae780f42d292d9f8b6e2023-09-02T09:45:42ZengTsinghua University PressFood Science and Human Wellness2213-45302019-12-0184362367Development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leavesTengfei Liu0Minghui Dong1Fengjie Zhou2Daifeng Yang3Xueming Zhang4Jiangsu Taihu Area Institute of Agricultural Sciences, Suzhou 215155, ChinaJiangsu Taihu Area Institute of Agricultural Sciences, Suzhou 215155, China; Corresponding author.Suzhou Agro-Products Quality and Safety Inspection and Test Center, Suzhou 215128, ChinaJiangsu Taihu Area Institute of Agricultural Sciences, Suzhou 215155, ChinaSuzhou Agro-Products Quality and Safety Inspection and Test Center, Suzhou 215128, ChinaAn efficient method using multiwalled carbon nanotubes (MWCNTs) as dispersive solid-phase extraction sorbent was established for determining chlorantraniliprole residues in fresh tea leaves, which are known to be a troublesome matrix containing abundant pigments, via gas chromatography with an electron capture detector. Acetonitrile was used as the extraction solvent, with sodium chloride enhancing the analyte partition in the organic phase. The optimal mixture of MWCNTs and primary secondary amine (PSA) was based on the distribution of the target analyte recovery and on the clean-up efficiency; while matrix-matched calibration was recommended to combat the matrix effect. Mean recoveries of 95.2%–108.8% were obtained with intraday and interday precisions of less than 7.9% and 10.3%, respectively. Good linearity was observed for concentrations of 0.02–1.0 mg/kg with a correlation coefficient of 0.9984. The limits of detection and quantification were 0.005 mg/kg and 0.02 mg/kg, respectively. The method was employed to investigate the dissipation dynamics of chlorantraniliprole in fresh tea leaves with real field samples. Consequently, the dissipation rates of chlorantraniliprole in fresh tea leaves followed pseudo-first-order kinetics with a half-life of 1.9 d, and the average chlorantraniliprole residue content was below 0.02 mg/kg with a harvest withholding period of 14 d. Keywords: Multiwalled carbon nanotubes, Fresh tea leaves, Chlorantraniliprole, Dispersive solid-phase extraction, Gas chromatographyhttp://www.sciencedirect.com/science/article/pii/S2213453019301752 |
| spellingShingle | Tengfei Liu Minghui Dong Fengjie Zhou Daifeng Yang Xueming Zhang Development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leaves Food Science and Human Wellness |
| title | Development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leaves |
| title_full | Development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leaves |
| title_fullStr | Development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leaves |
| title_full_unstemmed | Development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leaves |
| title_short | Development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leaves |
| title_sort | development and validation of an analytical method for detecting chlorantraniliprole residues in fresh tea leaves |
| url | http://www.sciencedirect.com/science/article/pii/S2213453019301752 |
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