title: Development and verification for analysis of pesticides in eggs and egg products using QuEChERS and LC-MS/MS.
abstract: QuEChERS method was applied and validated for the multi-residue analysis of pesticides in eggs and egg products. The method includes extraction with buffered acetonitrile and clean-up with dispersive sorbents, followed by LC-MS/MS analysis. The validation parameters were used based on the guideline of SANCO/12495/2011. Recoveries were within the range of 71-108%, and the relative standard deviations were 2-13% at the 3 different concentrations evaluated for eggs and egg products. The limits of quantification for the target compounds ranged from 0.3 to 6 ng/g. Monitoring of 100 domestic eggs and 50 imported egg products were performed to verify the adaptability in real samples. No samples contained residues exceeding the maximum residue limit (MRL). Carbendazim, dimethoate, and pirimicarb were each found in egg yolks at the level of 2 ng/g, in the same sample, well below their MRLs of 50-100 ng/g.
authors.affiliation: Animal, Plant and Fisheries Quarantine and Inspection Agency, 175 Anyang-ro, Anyang, Gyeonggi-do 430-757, Republic of Korea; Department of Agricultural Biotechnology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea.
authors.forename: Siweon
authors.initials: S
authors.lastname: Choi
authors.affiliation: Animal, Plant and Fisheries Quarantine and Inspection Agency, 175 Anyang-ro, Anyang, Gyeonggi-do 430-757, Republic of Korea.
authors.forename: Sooyeon
authors.initials: S
authors.lastname: Kim
authors.affiliation: Animal, Plant and Fisheries Quarantine and Inspection Agency, 175 Anyang-ro, Anyang, Gyeonggi-do 430-757, Republic of Korea.
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Shin
authors.affiliation: Animal, Plant and Fisheries Quarantine and Inspection Agency, 175 Anyang-ro, Anyang, Gyeonggi-do 430-757, Republic of Korea. Electronic address: mkim@korea.kr.
authors.forename: MeeKyung
authors.initials: M
authors.lastname: Kim
authors.affiliation: Department of Agricultural Biotechnology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea. Electronic address: kjh2404@snu.ac.kr.
authors.forename: Jeong-Han
authors.initials: JH
authors.lastname: Kim
mesh_terms: D000097:Acetonitriles / Q000032:analysis; D001562:Benzimidazoles / Q000032:analysis; D002219:Carbamates / Q000032:analysis; D002853:Chromatography, Liquid; D004531:Eggs / Q000032:analysis*; D005504:Food Analysis; D057230:Limit of Detection; D010573:Pesticide Residues / Q000032:analysis*; D011743:Pyrimidines / Q000032:analysis; D015203:Reproducibility of Results; D053719:Tandem Mass Spectrometry
chemical_list: D000097:Acetonitriles; D001562:Benzimidazoles; D002219:Carbamates; D010573:Pesticide Residues; D011743:Pyrimidines; C011994:pirimicarb; C006698:carbendazim; C032159:acetonitrile
keywords: Eggs and egg products; LC–MS/MS; Pesticides; QuEChERS