Analysis methods for trace gases such as benzene and aniline in coke oven gas
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I need to work on a project in this area soon, and I’m not very familiar with analysis; I hope those who are more experienced can give me some advice! Thank you!
Determination of ammonia content in gas； A certain amount of gas is introduced into sulfuric acid solution to absorb the ammonia present in it; the excess sulfuric acid is back-titrated using a sodium hydroxide standard solution. The amount of ammonia contained can be determined based on the amount of sulfuric acid consumed. Determination of ammonia content in gas ； When the naphthene compounds in gas pass through a picric acid solution, complex precipitates are formed; the filtered precipitate is dissolved in acetone and titrated with a standard solution. However, some unsaturated hydrocarbons present in the gas also react with picric acid, so corrections must be made
Use chromatography! ! ! ! ! ! ! ! ! ! ! ! ! ! !