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Alexander Laskin Pacific Northwest National Laboratory P.O. Box 999/K8-88 Richland, WA 99352 email: Alexander.Laskin@pnl.gov The scope of this research program is to characterize the chemical and physical properties of field-collected atmospheric aerosols to establish the quantitative relations between the composition of aerosols and their optical and hygroscopic properties. This project employs an array of EMSL hosted analytical methods for chemical and microscopy characterization of aerosol samples collected during the ASP defined field studies. These techniques are capable of providing outstanding specificity and detail on particle surface and inner composition, chemistry, morphology, phase and internal structure, hygroscopic properties of individual aerosol particles as well as time-resolved mass loads of non-volatile aerosols. Analysis of aerosol samples is carried out in conjunction with the available in-situ data from the sampling sites. We also use the in situ data of our ASP colleagues to identify specific field samples (by collection time) for extensive laboratory analyses at EMSL. Field sampling is carried out using commercial and home built aerosol samplers that allow laboratory analysis of samples to provide quantitative mass loading measurements and single particle characterization respectively. [back to ASP ST Membership] |