title: Multiresidue pesticide analysis in Korean ginseng by gas chromatography-triple quadrupole tandem mass spectrometry.
abstract: In this study, a new analytical method was developed based on gas chromatography-triple quadrupole tandem mass spectrometry (GC-MS/MS) and used to determine 32 multiclass pesticides in ginseng products. The analytical method was validated, yielding recovery rates in the range of 55.2-108.3%, with precision values expressed as relative standard deviation (RSD) lower or equal to 12% at the spiking levels of 30, 100, and 1000 μg/kg. Correlation coefficients and LOQs (limit of quantification) were in the range 0.9801-0.9989 and 0.15-70 g/kg, respectively. With these validation data and this method, multiresidue pesticides of ginseng samples (fresh ginseng (n=118), red ginseng (n=24), dried ginseng (n=10)) were analysed. Among them, the most frequently detected pesticide was tolclofos-methyl. Tolclofos-methyl was detected in 86.4% of fresh ginseng (18.25-404.5 μg/kg), 91.7% of red ginseng (13.14-119.4 μg/kg), and 87.5% of dried ginseng (23.15-3673 μg/kg).
authors: Department of Food Science and Biotechnology, Dongguk University-Seoul, 26, 3-Ga, Pil-Dong, Chung-Gu, Seoul 100-715, Republic of Korea. kwglee@dongguk.edu
authors: Kwang-Geun
authors: KG
authors: Lee
authors: Eun-Kyung
authors: EK
authors: Jo
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D005894:Panax / Q000737:chemistry*; D010573:Pesticide Residues / Q000737:chemistry*; D053719:Tandem Mass Spectrometry / Q000379:methods
chemical_list: D010573:Pesticide Residues