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本文叙述了用pH滴定直接测定水溶液中苯酚含量的简便而快速的新方法。它基于苯酚在水溶液中存在弱的解离平衡,在一定pH条件下,不同浓度溶液中酸根的分布系数相等。检出限达2.4×10~(-4)mol/L。精密度及准确度符合一般仪器分析要求。
This paper describes a simple and rapid new method for the direct determination of phenol content in aqueous solution by pH titration. It is based on the existence of weak dissociation equilibrium of phenol in aqueous solution. Under certain pH, the distribution coefficient of acid radical in different concentration solution is equal. Detection limit of 2.4 × 10 ~ (-4) mol / L. Precision and accuracy in line with the general instrument analysis requirements.