AI Article Synopsis
- The text discusses the problem of agrochemical disqualification due to insufficient and misused active ingredients, highlighting the need for quick analysis methods.
- It presents a thesis that successfully analyzes the active ingredient haloxyfop-r-methyl using FT-NIR spectroscopy with highly accurate calibration models (R2 ≥ 0.9999).
- The study concludes that near-infrared spectroscopy is a fast, convenient method for accurately measuring active ingredients in agrochemicals, benefiting quality monitoring and on-site analysis in enterprises.
Article 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.
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