红外光谱法测定草甘膦铵盐的含量  

Quantitative Analysis of Glyphosate by Infrared Absorption Spectrometry

作　　者：戴郁菁[1] 姚杰[1] 冯玉英[1] 

机构地区：[1]南京师范大学分析测试中心江苏省生物功能材料重点实验室,南京210046

出　　处：《农药》2011年第10期732-733,736,共3页Agrochemicals

基　　金：江苏省普通高校自然科学研究计划资助项目(07KJD430107);江苏省科技重大项目-江苏省生物医药材料测试服务平台(BM2007132)

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4000-500cm^-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1321cm^-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1295～1348cm^-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。[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.

关 键 词：红外光谱 草甘膦 ATR 农药 

分 类 号：TQ457.2[化学工程—农药化工]