2,4-二硝基苯肼吸收液法测定空气中醛、酮类化合物
Determination of Aldehydes and Ketones in Atmosphere by 2,4-Dinitrophenylhydrazine（2,4-DNPH） Absorption Liquid
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摘要: 应用高效液相色谱分析环境空气和废气中的醛、酮类污染物。样品经DNPH的酸溶液吸收后,用二氯甲烷/正己烷3∶7进行萃取,然后将萃取液吹干,用乙腈溶解后进行高效液相色谱分析。结果证明该测定方法具有准确率高,精密度好的特点。为制定适合于我国国情的空气和废气中醛、酮类化合物的测定方法提供依据。Abstract: In this experience,we use HPLC to analyze aldehydes and ketones in the atmosphere and exhaust gas.The samples are absorbed by 2,4-dinitrophenylhydrazine(DNPH) solution,then extracted by dichloromethane / n-hexane 3:7.After drying,being dissolved by acetonitrile,the samples are analyzed by HPLC.It is proved that the method has high accuracy and precision which provides basis for establishing the method of determination of aldehydes and ketones in the atmosphere and exhaust samples.
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