AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
On-line Quantification of Anhydrosugars Emitted in the Atmosphere by High Performance Anion Exchange Chromatography with Pulsed Amperometric Detection (HPAEC-PAD)
ROLAND SARDA-ESTEVE, Jason Vivarnick, Dominique Baisnee, Christophe Bohard, Olivier Favez, Jean-Maxime Roux, Christophe Bossuet, CEA
Abstract Number: 26 Working Group: Bioaerosols
Abstract Online analysis of chemical targets with simple methods is a big challenge. A few sophisticated methods have been recently developed for in-situ analysis of bio-aerosol targets and/or biomass burning tracers, using systems like Particle Into Liquid Sample coupled to Mass spectrometers (PILS-MS). However, such MS-based techniques are cost effective, require complex maintenance, and cannot be easily deployed in the field. In the frame of the Bio Chemical Collectors (BCC) CBRN-E research project, funded by the French Atomic Energy Commission department of Military Application (CEA-DAM), we developed a novel and simpler method to detect atmospheric targets at very low levels. Our concept is to couple a PILS-like collector to a Pulsed Amperometric Detector (PAD). Atmospheric air is firstly injected in a supersaturated water growth chamber. Then, the jet of micrometric droplets which contains the analyst is cooled and collected by a microfluidic device. The liquid sample obtained can finally be injected on any analytical system for the on line analysis of dissolved particles. Our system is also efficient to collect insoluble material like mineral dusts or microorganisms. To test our concept of this new atmospheric collector/concentrator we choose to detect major’s anions and biomass burning tracers at low concentration during the winter period at the CEA Atmospheric Observatory in the suburb of Paris. The collection/concentration of liquid samples has been tested on a modified PILS and a small volume of sample collected has been simultaneously injected on Ion Chromatography Systems: ICS 2000 for anions and IC-PAD ICS 5000+, Thermo Fischer Scientific, France for ions and sugars. In our configuration, the Limit of Detection is estimated to be around 10 ng/m3 for Levoglucosan.
This work is supported by the CBRN-E R&D research program from CEA/DAM.