Tübitak Proje Çıktıları
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Publication Open Access Çok Boyutlu Sıvı Kromatografi (2d-Lc) Sistemleri Kullanarak Organik Aerosollerin Ayrışma Modellemesi Ve Gelişiminin Belirlenmesi(2018-01-04) Rosa Maria FLORES RANGEL; Marmara Üniversitesi, Mühendislik Fakültesi, Çevre Mühendisliği Bölümü, İstanbul, TürkiyeAerosols have various effects on human health, climate, and ecosystems. Fine particles canpenetrate into the circulatory system and cause acute respiratory problems. Aerosols alsohave an important role in climate change by altering the radiation balance and lifetime andproperties of clouds. Secondary organic aerosol (SOA) is formed in the atmosphere whenvolatile organic compounds (i.e., precursors) oxidize to form less volatile compounds (semivolatile)that condense on aerosols suspended in the atmosphere. Secondary organic aerosolis composed of a mixture of hundreds to thousands of organic compounds that variesgeographically, diurnally, and seasonally according to a number of factors, such as type andconcentration of precursor, type and concentration of oxidants, temperature, relative humidity,among others. In addition, organic aerosols travel intercontinentally and transform duringtransport. The type and number of functional groups composing individual organic speciesinfluence their interaction with water vapor and sunlight, therefore affecting both water cycleand radiation balance. Great efforts have been made to develop analytical techniques that (1)allow the identification and quantification of individual species composing this complexmixture of organic matter and (2) decrease the uncertainty of models to accurately predictSOA production and evolution. In this work a theoretical model will be used to (1) predict theoptimal separation of selected organic aerosol components in a multidimensional liquidchromatography system and (2) represent the diurnal variation of organic aerosolcomponents in high-time resolved ambient air samples. The positive outcome of this projectwill be helpful to evaluate 2D-LC as a potential technique for more accurate determination oforganic aerosol components and to understand organic aerosol formation and transformationpathways that can be used in secondary organic aerosol production models.