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分别以“空白膜”电极为指标电极,四苯硼钠和氯代十八烷基吡啶为滴定剂,电位滴定了100多种有机缔合物体系,用“三参数法”对大量的研究测试数据进行处理和评价,比较和确定了各电位滴定体系的滴定灵敏度和优劣次序。结果发现:滴定灵敏度高达1×10-5mol/L的有40种,其中29种体系的灵敏度还可再提高(它们将是良好的阴、阳离子滴定剂);达到1×10-4mol/L的有31种;达到1×10-3mol/L的有11种。上述研究结果对分析有机物(如药物、离子型表面活性剂和染料等)是十分有意义的。本文还对提高有机缔合物电位滴定体系的灵敏度问题进行了探讨
Using “blank membrane” electrode as index electrode, sodium tetraphenylborate and octadecyl pyridine as titrant, potentiometric titration of more than 100 kinds of organic association system, using the “three parameters” for a large number of research tests Data processing and evaluation, compared and determined each titration titration system titration sensitivity and order of advantages and disadvantages. The results showed that there are 40 kinds of titration sensitivity up to 1 × 10-5mol / L, of which 29 kinds of system sensitivity can be further increased (they will be a good anion, cationic titrant); up to 1 × 10-4mol / L of There are 31 species; up to 1 × 10-3mol / L of 11 species. The above findings are of great interest for the analysis of organic compounds such as drugs, ionic surfactants and dyes. In this paper, the sensitivity of organic association potentiometric titration system is also discussed