论文部分内容阅读
非水滴定法已广泛地用于碳的测定。常见的非水体系有甲醇-丙酮、乙醇-乙醇胺、二甲基甲酰胺-乙醇胺等。本文报导用乙醇-四乙烯五胺非水体系滴定碳。该体系终点敏锐,对CO_2的吸收保留能力强,滴定时既不需要预加滴定液,也不需要用滴定液封顶,测定结果不会偏低。已用于钢铁、矿物、合金等样品0.01—10%碳的测定,三年来效果很好。
Non-aqueous titration has been widely used for the determination of carbon. Common non-aqueous systems are methanol - acetone, ethanol - ethanolamine, dimethylformamide - ethanolamine and so on. This paper reports the titration of carbon with ethanol-tetraethylenepentamine non-aqueous system. The system has a sharp end point and strong absorption and retention capacity for CO 2. The titration does not require pre-titration solution or titration solution, and the determination result will not be low. Has been used in steel, minerals, alloys and other samples 0.01-10% carbon determination, three years to good effect.