Research on the Fluorescence Spectra Characteristics of Abamectin Technical and Preparation Solution
YAN Kang-ting1, 2, HAN Yi-fang1, 2, WANG Lin-lin1, 2, DING Fan3, LAN Yu-bin1, 2*, ZHANG Ya-li2, 3*
1. College of Electronic Engineering，College of Artificial Intelligence, South China Agricultural University, Guangzhou 510642, China
2. National Center for International Collaboration Research on Precision Agricultural Aviation Pesticides Spraying Technology, Guangzhou 510642, China
3. College of Engineering, South China Agricultural University, Guangzhou 510642, China
Abstract：Excessive use of abamectin in agricultural production causes excessive crop pesticide residues. This study used a JASCO FP8300 fluorescence spectrophotometer to detect abamectin pesticide solution.The fluorescence spectrum characteristics of the abamectin technical solution and preparation solution were analyzed to provide a data reference basis for the rapid detection of abamectin. The experiment first analyzed the three-dimensional fluorescence spectra of the technical solution and two preparation solutions from different manufacturers. It is determined that the fluorescence characteristic peak area belonging to the abamectin is Ex=250~ 290 nm, Em=280~320 nm, and the best excitation wavelength is 270 nm. Therefore, 270 nm was selected as the best excitation band for two-dimensional fluorescence spectrum detection. According to the two-dimensional spectral data, the fluorescence intensity of abamectin fluorescence characteristic peak was analyzed with the change of solution concentration, and the prediction model of them was obtained by fitting relevant data. According to the results of data analysis, theR2 of the prediction model of abamectin technical solution was 0.999, and the root means square error (RMSE) of the prediction results was 0.359 mg·L-1 in the concentration range of 10～35 mg·L-1. Besides, theR2 of the abamectin preparation solution prediction model produced by two different manufacturers within the concentration range of 10～35 mg·L-1 were 0.935 and 0.985. Moreover, the root means square error (RMSE) of the predicted results were 1.945 and 0.858 mg·L-1. The results showed that the fluorescence effect of abamectin in the preparation could not be lost due to other fillers and additives. In addition, the concentration of abamectin could be reflected by the fluorescence intensity value, which further verified the feasibility of using the fluorescence spectrum to detect the content of abamectin.
颜康婷，韩沂芳，王林琳，丁 凡，兰玉彬，张亚莉. 阿维菌素原药及制剂溶液的荧光光谱特征研究[J]. 光谱学与光谱分析, 2022, 42(11): 3476-3481.
YAN Kang-ting, HAN Yi-fang, WANG Lin-lin, DING Fan, LAN Yu-bin, ZHANG Ya-li. Research on the Fluorescence Spectra Characteristics of Abamectin Technical and Preparation Solution. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(11): 3476-3481.
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