论文部分内容阅读
OH自由基启动苯系物光氧化形成的二次有机气溶胶能够影响气候变化,降低大气能见度,危害人类健康.我们实验室自行研制的气溶胶飞行时间质谱仪能够用于二次有机气溶胶的实时检测研究.该仪器在检测过程中产生大量的实验数据,对这些数据快速、自动处理并提取有价值的信息是整机系统的关键之一.本文介绍模糊聚类算法在苯系物二次有机气溶胶单粒子聚类分析中的成功运用.利用该算法对OH自由基启动1,3,5-三甲苯光氧化形成的二次有机气溶胶单粒子质谱数据进行了聚类分析,在得到的五个聚类中包含了芳香醛、酚类化合物、硝基酚和羧酸等重要的光氧化产物,为研究苯系物光氧化机理提供了新的信息.
OH Radicals BEM initiated by photooxidation of benzene derivatives can affect climate change, reduce atmospheric visibility and endanger human health.An aerosol time-of-flight mass spectrometer developed by our laboratory can be used in the secondary organic aerosol Real-time detection and research. The instrument in the detection process to produce a large number of experimental data on these data quickly and automatically processing and extracting valuable information is the key of the whole system.In this paper, fuzzy clustering algorithm in the benzene series secondary Organic aerosol single particle cluster analysis of the successful use of the algorithm used OH radical initiated 1,3,5-trimethylbenzene photooxidation of secondary organic aerosol single-particle mass spectrometry data were clustered analysis obtained The five clusters contain important photooxidation products of aromatic aldehydes, phenols, nitrophenols and carboxylic acids, which provide new information for studying the photooxidation mechanism of benzene compounds.