College of Science, China Agricultural University, Beijing 100193, PR China.
Food Chem Toxicol. 2011 Nov;49(11):2869-74. doi: 10.1016/j.fct.2011.08.009. Epub 2011 Aug 16.
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.
本研究建立了一种简单、快速、可靠的分析方法，用于测定大蒜和土壤中的 1-萘乙酸。采用高效液相色谱-串联质谱法（HPLC-MS/MS）测定大蒜和土壤中 1-萘乙酸的残留水平和消解速率。该方法的定量限（LOQ）为 0.005mg/kg。1-萘乙酸在大蒜植株和土壤中的半衰期分别为 0.80-1.4 天和 0.94-2.0 天。大蒜、蒜薹和土壤中 1-萘乙酸的最终残留量均未检出，均低于 0.05mg/kg（欧盟 MRL）。大蒜和土壤中的最终残留结果表明，该农药在推荐剂量下使用是安全的。
