A method for the determination of carbonyl compounds in ambient air by high performance liquid chromatography(HPLC)was established by using 2,4-dinitrophenylhydrazine(DNPH)coated silica gel filled tubes to collect carbonyl compounds in ambient air.The results showed that the test method had a good linear relationship,and the linear coefficient ranged from 0.9998 to 1.000;The detection limit of the method was 0.65～2.46 μg·m-3,the lower limit of determination was 2.61～9.85 μg·m-3;The relative standard deviations of low,medium and high mass concentrations were 0.9%～8.5%,0.5%～3.6%and 0.6%～2.8%respectively;The actual sample spiking recovery range was 89.8%～116%.The method has the advantages of good stability,simple operation and high sensitivity,and is suitable for the determination of aldehydes and ketones in ambient air.
关键词
高效液相色谱/环境空气/醛酮类化合物/2,4-二硝基苯肼
Key words
High performance liquid chromatography(HPLC)/Ambient air/Acarbonyl compounds/2,4-dinitrophenylhydrazine
维普
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