Abstract
A method is described for the microdetermination of carbon and hydrogen in fluoro and perfluoro compounds. Samples are burned in a rapid flow of oxygen (35 ml/min) using the rapid straight empty tube method. Carbon and hydrogen are determined by gravimetry. Before entering the soda asbestos tube, the combustion products are conducted through a silica gel-hydrochloric acid mixture and then either through acidified silver nitrate solution or through silica gel transfused with silver nitrate. The standard deviation ranges from ±0.03 to 0.38 for carbon and from ±0.04 to 0.25 for hydrogen.
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