一、方法原理利用钢铁试样在氧气流中燃烧,生成的二氧化碳吸收在含少量乙醇胺的苯、乙醇混合溶液中,然后以百里酚酞为指示剂,用氢氧化钾乙醇溶液进行非水滴定。经过数月来实际使用,感到此法简单、快速、准确,一个试样只需2～3分钟,就能得出碳、硫二个元素的结果。如配以自动滴定仪判断终点,即可将操作改为半自动化。 First, the principle of the method The use of steel samples in oxygen flow combustion, the resulting carbon dioxide absorption in a small amount of ethanolamine in benzene, ethanol mixed solution, and then thymolphthalein as an indicator, with non-aqueous potassium hydroxide ethanol solution. After several months of actual use, I feel this method is simple, fast and accurate, a sample of just 2 to 3 minutes, you can come to carbon and sulfur results of the two elements. If equipped with automatic titrator to determine the end, you can change the operation to semi-automatic.