AAAR 31st Annual Conference
October 8-12, 2012
Hyatt Regency Minneapolis
Minneapolis, Minnesota, USA
Abstract View
Determination of Polycyclic Aromatic Hydrocarbons and Their Oxidation Products in Particulate Matter Using Pressurized Fluid Extraction
RICHARD COCHRAN, Nagaraju Dongari, Haewoo Jeong, Josef Beranek, Alena Kubatova, University of North Dakota
Abstract Number: 265 Working Group: Instrumentation and Methods
Abstract Although secondary gas-phase mechanisms that produce oxidation products of polycyclic aromatic hydrocarbons (PAHs) have been studied extensively, the knowledge regarding heterogeneous oxidation mechanisms is limited. In order to determine these mechanisms an analytical method that allows for the analysis of the wide range of polar PAH products needs to be developed. In this study pressurized fluid extraction (PFE) was compared to the currently used Soxhlet extraction method for the quantification of PAHs and their oxidation products in wood smoke PM. Solid phase extraction (SPE) was used to fractionate PAHs and their oxidation products based on their polarities to improve the sensitivity of their analysis. GC-MS methods employed both electron ionization and negative ion chemical ionization. MS detection was performed in selected-ion-total-ion scanning mode, enabling both high sensitivity and identification abilities.