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| Simultaneous determination of 523 pesticides and metabolites in beet using UHPLC-MS/MS and GC-MS/MS |
| Received:December 08, 2022 |
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| KeyWord:beet;pesticide multi-residue analysis;UHPLC-MS/MS;GC-MS/MS |
| Author Name | Affiliation | E-mail | | YUAN Haiyue | Hainan Institute for Food Control, Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China
Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | SHI Xiaomeng | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | LI Bei | Hainan Institute for Food Control, Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570311, China | | | WANG Wenwen | Agilent Technologies Limited, Beijing 100102, China | | | LIU Xiaowei | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | HE Zeying | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | hezeying@caas.cn |
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| Abstract: |
| This study aimed to develop a multiresidue method for simultaneous detection of 523 pesticides and metabolites in beet using QuEChERS extraction combined with UHPLC-MS / MS and GC-MS / MS. The samples were extracted by the QuEChERS pretreatment method, purified by d-SPE with MgSO4 and PSA, and determined using UHPLC-MS/MS and GC-MS/MS. The dosage of PSA affected the recoveries of 40 pesticides, which were between 60% and 120% when PSA was used 0 mg ·mL-1 or 5 mg ·mL-1. The recoveries of 523 pesticides and metabolites at 2-200 μg·kg-1 ranged from 65.1% to 116.4% with RSDs <24.1%. The limits of quantification（LOQs）were 2 μg·kg-1 or 5 μg·kg-1. The linear correlation coefficients were >0.99. There was no significant difference in the detection results of the two instruments for 142 pesticides. The concentrations of pesticide residues detected in real samples were all below the corresponding national maximum residue limits（MRL）. However, according to the European Union standard, residual concentrations of chlorpyrifos, deltamethrin, and fenvalerate exceeded the MRLs in some samples. This analytical method is simple and rapid, and its accuracy, precision, and sensitivity all meet the requirements of pesticide residues analysis. Therefore, this method can be applied in analysis of 523 pesticides and metabolites in beet. |
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