玻璃电极吸附对pH值测定影响的研究(Ⅰ)——高分子、胶体溶液中pH值的测定

RESEARCH OF THE INFLUENCE OF THE ADSORPTION OF GLASS ELECTRODE IN DETERMINING pH VALUE DETERMINATION OF pH VALUE IN POLYMER AND COLLOID SO LUTION

本文在国内首次报道了在高分子和胶体溶液中用玻璃电极测定 pH 值时具有吸附作用,并在相同溶液中与锑电极作了对比试验。文中对玻璃电极的吸附机理做了理论上的分析,两电极的差异(△pH)是由于玻璃电极吸附所致,并将两电极用于皮革生产中,绘制了两电极的△pH 关系图。

This is a first paper in China reporting about adsorption of glass electrode in determining pH value in polymer and colloid solution,and the experiments in the same solution comparing with antimony combination electrode.The experments show that there is a significant differ- ence between pH values of polymer and colloid solution determined with glass electrode and an- timony combination electrode,because the glass electrode has an adsorpting effect to polymer and colloid.So that the author of this paper has researched on the cause and regularity of the difference of pH values in polymer and colloid solution resulting from adsorption of glass elec- trode,and also analysized theoretically the adsorpting effect of glass electrode on the base of the experiments.From the using range of glass electrode and its callibration factor when used in polymer and colloid solution have been obtained.Finally,this paper also shows usage of these two kinds of electrode in determining pH values of leather solution,and the correspond- ing relation graph of pH value determined by these two kinds of electrodes.