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1910年普利格尔(Pregl)发明了有机化合物中元素的定量分析的方法。他使样品与氧化剂在高温下燃烧,吸收、称量产生的水及二氧化碳,从而求得碳、氢的含量。后来 M.柯尔苏(Коршун)改进了这个方法,他不用氧化剂,使样品单独在石英管中通氧燃烧,可以加快燃烧时间;而且除开碳、氢之外还可同时分析样品中的卤素或硫。同时分析碳、氢、卤素(或硫)的方法是在燃烧管外连接一个装有银丝或银网的石英套管,将这套管加热至450°,可全部吸收卤化物。若要吸收硫化物则需加热至750°。柯尔苏的空管法有它的优点,但对于同时测定几种元素来说,则仍旧不够完善。因为:(1)石英的卤素、硫吸收管经多次加热将呈
1910 Pregl invented a method for the quantitative analysis of elements in organic compounds. He samples and oxidants at high temperature combustion, absorption, weighing the water and carbon dioxide produced, so as to obtain carbon and hydrogen content. Later on, M. Coorsu improved this method by eliminating the need for an oxidant, allowing the sample to be oxy-burned in a quartz tube alone to speed up the burn-in time, and in addition to carbon and hydrogen, simultaneous analysis of the halogen in the sample or sulfur. At the same time, the method of analyzing carbon, hydrogen, halogen (or sulfur) is to connect a quartz tube with silver wire or silver net out of the combustion tube. The tube is heated up to 450 ° to fully absorb the halide. Heat up to 750 ° to absorb sulfide. The air traffic control method of Korsu has its advantages, but it is still not perfect for the simultaneous determination of several elements. Because: (1) quartz halogen, sulfur absorption tube will be heated several times