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快速测定草甘膦分析方法在实际应用中,如果遇到样品颜色深和浑浊时,其终点较难观察。为了选择较理想的指示终点,在考虑应用离子选择性电极的应用方面,曾经试图用铅电极、铂电极和汞电极等作为测定草甘膦的指示电极。实验结果证明,用汞电极作指示电极是可行的,汞电极与参比电极(饱和甘汞电极)组成原电池,在滴定过程中原电池的电动势将发生相应的变化,在滴定达到终点时,电位有突跃现象,从而易于判断滴定终点,根据标准溶液的用量,可以测出试样中络合
Rapid determination of glyphosate analysis in practical applications, if you encounter the sample dark color and turbidity, the end point of the more difficult to observe. In order to select the ideal end point for the purpose of considering the use of ion selective electrode applications, there have been attempts to use lead, platinum and mercury electrodes as indicators for the determination of glyphosate. The experimental results show that it is feasible to use the mercury electrode as the indicator electrode. The mercury electrode and reference electrode (saturated calomel electrode) constitute the primary battery. During the titration, the electromotive force of the primary battery will change correspondingly. When the titration reaches the end point, the potential There is a sudden phenomenon, which is easy to determine the titration end, according to the amount of standard solution can be measured in the sample complex