title: Analysis of 10 systemic pesticide residues in various baby foods using liquid chromatography-tandem mass spectrometry.
abstract: Ten systemic pesticides, comprising methomyl, thiamethoxam, acetamiprid, carbofuran, fosthiazate, metalaxyl, azoxystrobin, diethofencarb, propiconazole, and difenoconazole, were detected in 13 baby foods (cereals, boiled potatoes, fruit and milk) using QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) for sample preparation and liquid chromatography tandem mass spectrometry for analysis. The matrix-matched calibration curves showed good linearity with determination coefficients (R(2) ) >0.992. The limits of detection and quantitation were 0.0015-0.003 and 0.005-0.01 mg/kg, respectively. The mean recoveries of three different concentrations ranged from 69.2 to 127.1% with relative standard deviations <20%. The method was successfully applied to 13 actual samples collected from a local market, and none of the samples were found to contain pesticide residues. This method is suitable for the identification and quantification of systemic pesticides with matrix-matched standards in various baby foods.
authors.affiliation: Biotechnology Research Institute, College of Agriculture and Life Sciences, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 500-757, Republic of Korea.
authors.forename: Angel
authors.initials: A
authors.lastname: Yang
authors.forename: A M
authors.initials: AM
authors.lastname: Abd El-Aty
authors.forename: Jong-Hyouk
authors.initials: JH
authors.lastname: Park
authors.forename: Ayman
authors.initials: A
authors.lastname: Goudah
authors.forename: Md Musfiqur
authors.initials: MM
authors.lastname: Rahman
authors.forename: Jung-Ah
authors.initials: JA
authors.lastname: Do
authors.forename: Ok-Ja
authors.initials: OJ
authors.lastname: Choi
authors.forename: Jae-Han
authors.initials: JH
authors.lastname: Shim
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D007225:Infant Food / Q000032:analysis*; D057230:Limit of Detection; D010573:Pesticide Residues / Q000032:analysis*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D010573:Pesticide Residues
keywords: QuEChERS; baby foods; residue analysis; systemic pesticides; tandem mass spectrometry