Keywords Aldehydes;Ketones;High performance liquid chromatography;Ternary mobile _ phase gradient program;Ambient air;Adsorbent cartridge;2;4 _ Dinitrophenylhydrazine;

• 醛;酮;高效液相色谱法;三元梯度程序;大气;采样夹;2;4_二硝基苯肼;