Study on Rapid Determination of Active Ingredient of Agrochemicals by Near-Infrared Spectroscopy
XIONG Yan-mei1, DUAN Yun-qing2, WANG Dong1, DUAN Jia1, MIN Shun-geng1*
1. College of Science, China Agricultural University, Beijing 100193, China 2. College of Art and Science，Shanxi Agricultural University, Taigu 030801, China
Abstract：The main problem of disqualification of the agrochemicals is the insufficiency and abuse of its active ingredient, but lacking of the rapid and on the site analysis method. In the present thesis, the content of haloxyfop-r-methyl in the emulsifiable concentration was analyzed quantitatively by the FT-NIR spectroscopy combined with partial least square (PLS) method. The calibration models of haloxyfop-r-methyl were developed, the determination coefficients (R2) of the calibration models were no less than 0.999 9, the SEC were less than 0.019, and the SEP were less than 0.030. Meanwhile, the factors affecting the calibration model were studied and the validation was done by the actual sample. The result indicated that the method of near-infrared spectroscopy can predict the content of the active ingredient in emulsifiable concentration accurately; while the resolution of the instrument and the content of addition agent will not affect the prediction precision of the calibration model remarkably. Therefore, it is a feasible, convenient and quick method to analyze the active ingredient in the commodity agrochemicals by near-infrared spectroscopy, which has an important significance in the on-line determination, analysis on site in the enterprise and the rapid quantitative analysis of agrichemicals in the department of quality monitoring.
Key words：Near-infrared spectroscopy;Agrochemicals;Partial least square;On-the site analysis;Haloxyfop-R-methyl
熊艳梅1，段云青2, 王 冬1，段 佳1，闵顺耕1* . 近红外光谱技术快速测定农药有效成分的研究 [J]. 光谱学与光谱分析, 2010, 30(06): 1488-1492.
XIONG Yan-mei1, DUAN Yun-qing2, WANG Dong1, DUAN Jia1, MIN Shun-geng1* . Study on Rapid Determination of Active Ingredient of Agrochemicals by Near-Infrared Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(06): 1488-1492.
