Determination of pesticide residues in dates using UHPLC-QqQ-MS/MS: method development and validation
| Autor: | Muhammad Aziz Choudhary, Muhammad Tauseef, Touqeer Taj, Farrakh Mehboob, Muhammad Ishtiaq, Nazia Rafique, Karam Ahad, Muhammad Aslam Mirza, Somia Qayyum |
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| Rok vydání: | 2020 |
| Předmět: |
Residue (complex analysis)
Chromatography Pesticide residue Chemistry Pesticide Residues Phoeniceae General Medicine Management Monitoring Policy and Law Pesticide Quechers Pollution Matrix (chemical analysis) chemistry.chemical_compound Tandem Mass Spectrometry Carbaryl media_common.cataloged_instance European union Carbofuran Chromatography High Pressure Liquid General Environmental Science media_common Environmental Monitoring |
| Zdroj: | Environmental monitoring and assessment. 193(9) |
| ISSN: | 1573-2959 |
| Popis: | A modified, efficient, and sensitive acetate-buffered QuEChERS extraction method was developed for the quantitative study of 16 commonly applied multiclass pesticides on date palm fruit. The date palm fruit samples were rehydrated by adding water during comminution. Samples were extracted with acidified acetonitrile, buffered with acetate salt. To minimize the matrix interferences, clean-up of the rehydrated samples was optimized by comparison with different sorbents (alumina, silica gel, florisil, primary secondary amine (PSA), and chitosan). The method validation parameters were evaluated as per European Union (EU) guidelines (SANTE/12682/2019). For 16 pesticides, % recovery of 69 to 121.8% with an associated precision (RSD ≤ 20%) was achieved at the fortification levels that were 0.5 to 2 times of European Union maximum residue limits (EU-MRLs). The validated method was successfully employed for the analysis of date palm fruit samples (n = 20) collected from various markets. Forty percent (40%) of samples (n = 8) were found to be contaminated with various pesticides. The most frequently detected residues were carbofuran, carbaryl, metalaxyl, tebuconazole, triazophos, and pyriproxyfen. The concentration of all the detected pesticides in real samples was below the EU-MRLs. |
| Databáze: | OpenAIRE |
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