活性炭吸附紫外分光光度法测定油烟挥发组分

建立了用活性炭作吸附剂、脱芳烃石油醚萃取、紫外分光光度法测定油烟挥发组分的方法。取家用抽油烟杯内的油烟气冷凝液加热到200C的样品萃取液作标准油品，在225nm处测紫外吸光值，绘制校准曲线，相关系数在0．986～0．999之间。实验样品分析结果表明，脱芳烃石油醚对样品中油烟挥发组分萃取率可达90％以上，样品测定重现率达76．7％。红外光谱分析标准油品挥发组分初步认定为烃类、卤代烃类、醇酚醚类、醛酮类、羧酸及其衍生物类、稠环杂环类和胺类等。

To Detect Volatile Componentof OilSmoke Using Activated Carbon Absorption UltravioletSpectrophotometry

To detectvolatilecomponentofoilsmoke usingactivatedcarbontoabsorb,de aromatichydro carbonto extractand ultravioletspectrophotometryto detect. To gettheoilsmokecondensateandto heatto 200 ,thentoextractby de aromatichydrocarbon petroleum ethertogetanalysissample. To detectultravi oletabsorption valuein 225 nm,andto draw standard curves,therelativecoefficient wasbetween 0.986and 0.999. T he detectionresultindicatedthattheextraction rate of de aromatic hydrocarbon petroleum etherto volatilecomponentofoilsmokecanreach morethan 90%,the detectionreappearingratecanreach 76.7%. By ultravioletspectrophotometry,itcan know thevolatilecomponentofoilsmokesampleincluded hydrocar bons, halogenated hydrocarbons, alcohols, phenols, ethers, aldehydesand ketones, carboxylicacidsandits derivative, condensedring compounds,heterocycliccompoundsand amines.