title: Determination and study on dissipation of 1-naphthylacetic acid in garlic and soil using high performance liquid chromatography-tandem mass spectrometry.
abstract: A simple, quick and reliable analytical method for the determination of 1-naphthylacetic acid in garlic and soil has been developed in this study. The residual levels and dissipation rates of 1-naphthylacetic acid in garlic and soil were determined by high performance liquid chromatography-tandem mass spectroscopy (HPLC-MS/MS). The limit of quantification (LOQ) of the developed method was 0.005 mg/kg. The half-lives of 1-naphthylacetic acid in garlic plants and soil were 0.80-1.4 days and 0.94-2.0 days, respectively. The final residues of 1-naphthylacetic acid in garlic, garlic sprout and soil could not be detected and were all below 0.05 mg/kg (the MRL of EU). Results of the ultimate residues in garlic and soil showed that this pesticide is safe to be used under the recommended dosages.
authors.affiliation: College of Science, China Agricultural University, Beijing 100193, PR China.
authors.forename: Wenbi
authors.initials: W
authors.lastname: Guan
authors.forename: Pengjun
authors.initials: P
authors.lastname: Xu
authors.forename: Kai
authors.initials: K
authors.lastname: Wang
authors.forename: Yue
authors.initials: Y
authors.lastname: Song
authors.forename: Hongyan
authors.initials: H
authors.lastname: Zhang
mesh_terms: D000498:Allyl Compounds / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004785:Environmental Pollutants / Q000737:chemistry; D009280:Naphthaleneacetic Acids / Q000737:chemistry*; D010937:Plant Growth Regulators / Q000737:chemistry; D012987:Soil / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D000498:Allyl Compounds; D004785:Environmental Pollutants; D009280:Naphthaleneacetic Acids; D010937:Plant Growth Regulators; D012987:Soil; D013440:Sulfides; C034182:1-naphthaleneacetic acid; C038491:allyl sulfide