四种新芳氧羧酸类除草剂的拉曼光谱研究

Raman Spectra Studies on Four New Aryloxycarboxylic Acid Herbicides

对除草剂的研究是提高我国粮食作物产量的一种有效途径,我国的现状要求我们加大对除草剂研究的力度。采用共聚焦拉曼光谱仪对四种新合成的芳氧羧酸类除草剂进行了研究,得到了拉曼光谱信息,并对谱峰进行了归属,得到了此类化合物的特征谱峰的位置;此外,还测试了这四种除草剂的除草活性,发现I_2,I_3的除草活性最好,I_4次之,I_1最差,并用拉曼谱峰所给出的信息对除草活性的差异进行了解释。认为在所研究的这类除草剂中,芳氧乙酸类化合物的生成有利于增加除草活性。

The research on herbicides is one of the effective methods to improve the yield of the production of crops. The current situation of our country asks us to pay more attention to the research on herbicide. We used confocal Raman spectroscopy to study four new aryloxycarboxylic acid herbicides and abtained their Raman spectra. We assigned the characteristic peaks of the spectra of the herbicides. The herbicidal activity was studied. We found that the herbicidal activity of I-2 and I-3 is the best and that of I-1 is the worst. The difference of the herbicidal activity was explained from the aspect of Raman spectrum. We think that the formation of aryloxycarboxylic acid compound contributes most to the herbicidal activity of this kind of herbicide.