Levels of 13 multi-class pesticide residues in Polish honeys determined by LC-ESI-MS/MS |
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| Authors: | Maciej W Kujawski Jacek Namie?nik |
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| Affiliation: | 1. Creative Chemistry and Innovation Research Unit, Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand;2. Materials Chemistry Research Center, Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;1. National Forensic Service, 139 Jiyang-ro, Yangcheon-Gu, Seoul 08036, Republic of Korea;2. Department of Forensic Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea;1. Institute of Food Technology in Novi Sad, University of Novi Sad, Bul. Cara Lazara 1, 21000 Novi Sad, Serbia;2. Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad, Trg Dositeja Obradovi?a 3, 21000 Novi Sad, Serbia;3. University of Nova Gorica, Laboratory of Environmental Research, Vipavska 13, 5000 Nova Gorica, Slovenia;4. University of Novi Sad, Trg Dositeja Obradovi?a 8, 21000 Novi Sad, Serbia;1. Pesticide Residues and Environmental Pollution Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, Dokki, Giza 12618, Egypt;2. Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt |
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| Abstract: | Levels of 13 pesticides in 40 honey samples form Poland are reported. A rapid and sensitive method was developed for the LC-ESI-MS/MS determination of multi-class pesticide residues in honey samples. Liquid–liquid extraction (LLE) on a diatomaceous earth support (requiring the use of small amounts of organic solvent), followed by chromatographic separation on a C18 column and gradient elution were employed. The method quantifies over a dynamic linear range from respective MQLs (0.06–1.3 ng/g) to 5 ng/g. Matrix effects were evaluated by comparing the slopes of matrix-matched and solvent-based calibration curves. The mean recoveries obtained for three fortification levels (0.5, 1.0 and 4.0 ng/g) were 63–117% for most compounds, with an expanded uncertainty of <10%. The results for real honey samples collected from five regions of Poland (Pomerania, Wielkopolska, Lublin Region, Lower and Upper Silesia), showed that residue concentrations were <5 ng/g and did not pose a threat to human health. |
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