在分析化学中,对两性物质溶液的pH值的计算,往往按照“电荷平衡”、“物料平衡”或“质子条件”进行处理,那就经常涉及到高次方程的求解问题,这在实际工作中难以解决。在处理多个酸碱平衡的复杂两性物质时,采用的所谓“主要平衡法”,在实际应用中亦比较麻烦,且不太准确。文献中曾介绍用浓度对数图解法处理酸碱平衡、络合平衡等 In analytical chemistry, the calculation of the pH of amphiphilic solutions is often handled in terms of “charge balance,” “material balance,” or “proton conditions,” often involving the solution of higher-order equations, which is where practical work Difficult to solve. The so-called “main balance method” adopted in the handling of complex amphoteric substances with a number of acid-base balances is also cumbersome and not very accurate in practice. The literature has described the use of concentration logarithmic graphic method to deal with acid-base balance, complex balance