与以水为介质比较,阴离子型油/水(O/W)微乳液使得指示剂的pK值增加,且对憎水性指示剂甲基黄的影响大于对亲水性指示剂茜素红的影响,阳离子型O/W微乳液的存在对亲水性指示剂茜素红的pK值无影响,但使憎水性指示剂甲基黄的pK值增加,上述结果与指示剂在微乳液介质中的存在位置有关。 Compared with water, the anionic oil / water (O / W) microemulsion increased the pK value of the indicator and the effect on the hydrophobic indicator methyl yellow was greater than that on the hydrophilic indicator alizarin red , The presence of cationic O / W microemulsion had no effect on the pK value of the hydrophilic indicator alizarin red, but increased the pK value of the methyl yellow, a hydrophobicity indicator. The above results were correlated with the presence of the indicator in the microemulsion medium Relevant to the location.