【摘要】 [方法]采用红外光谱法直接测定农药草甘膦含量,样品检测使用ATR法。吸收范围4000~500 cm-1,分辨率为1cm-1,扫描32次。[结果]草甘膦标准品和草甘膦样品的红外光谱对照实验表明:草甘膦在1321 cm-1处的吸收峰不受农药中其他成分的干扰,可以选择此峰为定量分析的波数。草甘膦红外光谱在1295~1348 cm-1处的峰面积与其净含量满足线性关系,相关系数r为0.9997。[结论]利用红外光谱快速检测农药中有效成分草甘膦含量的方法是可行的,可以替代常规的理化分析,能够满足快速分析的需要。更多还原

【Abstract】 [Methods] The content of glyphosate was measured by infrared spectroscopy with ATR.Absorption ranged from 4000-500 cm-1.Resolution was 1 cm-1 and scan time was 32.[Results] A comparison of infrared spectra between standard glyphosate and sample glyphosate showed that the absorption peak of glyphosate at 1321 cm-1 was independent and could be used as the characteristic absorption peak for quantitative determination.The area from 1295 to 1348 cm-1 of the infrared spectra of glyphosate and its content met the linear relationship with r 0.999 7.[Conclusions] The method of ATR-FTIR,instead of routine lab analysis,is feasible for the determination of glyphosate in agrochemical.更多还原