Method for analyzing nitrogen-containing compounds

The present invention provides a method for analyzing a nitrogen-containing compound, comprising the steps of: dispersing a nanodiamond and a nitrogen-containing compound in a fluid to adsorb the nitrogen-containing compound on the nanodiamond; removing the fluid to obtain the nano-diamond adsorbed with the nitrogen-containing compound; and measuring the nitrogen content of the nanodiamond to which the nitrogen-containing compound is adsorbed. 本发明提供一种含氮化合物的分析方法，包括以下步骤：使纳米金刚石及含氮化合物在流体中分散，使前述含氮化合物吸附于前述纳米金刚石；去除前述流体，获得吸附有前述含氮化合物的纳米金刚石；及，测定吸附有前述含氮化合物的纳米金刚石的氮含量。