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  • Title: Determination and study on dissipation of 1-naphthylacetic acid in garlic and soil using high performance liquid chromatography-tandem mass spectrometry.
    Author: Guan W, Xu P, Wang K, Song Y, Zhang H.
    Journal: Food Chem Toxicol; 2011 Nov; 49(11):2869-74. PubMed ID: 21864633.
    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.
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