生物燃料烟气中醛酮类物质液质联用法测定

Dectection of aldehydes and ketones in smoke of biomass combustion by High Performance Liqiud Chromatography/Mass Spectrometry

目的进一步了解生物燃料烟气中醛酮类物质的组成,为深入研究生物燃料烟气对人体的危害提供依据。方法用高效液相色谱/质谱联用分析法(HPLC/MS),对采自广东省韶关山区的生物燃料烟气样品中醛酮类物质进行分析。通过高效液相色谱将样品中的醛酮类物质分离后,在线与质谱联用,根据质谱获得的准分子离子峰确定出的分子量推断出生物燃料烟气中醛酮类物质的主要种类。结果从生物燃料烟气样品中检测出的醛酮类物质主要有甲醛、乙醛、丙酮、苯甲醛、正戊醛和苯丙醛等6种。结论HPLC/MC法灵敏、准确、快捷,适用于生物燃料烟气中醛酮类物质的测定。

Objective To find out the aldehydes and ketones existing in the smoke from biomass combustion and to facilitate the further scientific research on the harm of the biomass smoke to the human beings. Methods The High Performance Liqiud Chromatography/Mass Spectrometry（HPLC/MS） was used to detect the aldehydes and ketones existing in the smoke sample collected from the Shaoguan mountain area of Guangdong province. Different aldehydes and ketones in the smoke sample were separated one by one with the help of the HPLC, the separated aldehyde and ketones were then directly sent to the on-line MS for determining the structures of aldehyed and ketones according to the pseudo-molecular-ion peak showed in the MS. Results The following six aldehydes and ketones were found in the smoke sample： formaldehyde, acetaldehyde, ketone, benzaldehyde, valeraldehyde, and phenylpropyl aldehyde. Conclusion The HPLC/MS analyse is sensitive, accurate and raoid. It is suitable for determination of aldehydes and ketones in the biomass smoke.