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所谓“冒烟”实质上是将酸溶液加热使产生酸的气状烟雾,是酸的蒸气和水蒸气结合形成的细微雾滴.如将分析中常用的无机酸(盐酸、硝酸、硫酸、高氯酸)溶液,在101325Pa(即latm)的压力下加热时,水蒸气和酸的蒸气同时按一定比例从溶液中逸出;当温度升至各种酸溶液的恒沸点时,酸溶液将保持恒定的浓度,这时出现的烟雾即达到“冒烟”的程度(见表).
The so-called “smoke” is essentially the acid solution is heated to produce acid gas smoke, acid vapor and water vapor combined with the formation of fine droplets.As the analysis of commonly used inorganic acids (hydrochloric acid, nitric acid, sulfuric acid, high Chlorate) solution, at a pressure of 101325Pa (ie latm) when heated, steam and acid vapor at the same time by a certain percentage of escaped from the solution; when the temperature rises to the constant boiling point of various acid solution, the acid solution will remain At a constant concentration, the smoke that appears at this point reaches the level of “smoke” (see table).