Total acid number in engine and hydraulic oil with thermometric titration
8.000.6066
zh
这里介绍的温度滴定法可以简单直接地测定石油产品中的总酸值 (TAN)。它是当前手动和电位滴定法的重要替代方法。温度滴定法使用的是无需维护的温度传感器，不需要补水，也不会产生结垢和基质效应。该程序只需极少的样品制备。根据 ASTM D664 标准，该方法与电位滴定法的结果非常接近，但在重现性和分析速度方面，温度滴定法要优良得多，大约一分钟即可完成测定。
The total acid number (TAN) is an important quality parameter for engine and hydraulic oils, as it reflects the degree of oil degradation and corrosion potential. Current standard methods for TAN determination, such as ASTM D664, are based on potentiometric titration, which is time-consuming and requires frequent calibration and electrode maintenance. This poster presents a thermometric titration method that overcomes these drawbacks and offers a rapid and reliable way to measure TAN in petroleum products.
Thermometric titration uses a temperature sensor that responds to the exothermic reaction between the acid and the base. The method has excellent reproducibility and accuracy and can be performed in less than a minute per sample. The applicability of thermometric titration is demonstrated for engine and hydraulic oils, and the results are compared with those obtained by the potentiometric method.