AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
Laboratory Evaluation of a Commercial Spot Sampler
ARANTZAZU EIGUREN-FERNANDEZ, Gregory Lewis, Susanne Hering, Christopher Hare, Patricia Keady, Aerosol Devices Inc.
Abstract Number: 567 Working Group: Aerosol Chemistry
Abstract The Spot Sampler is a commercially-available instrument that uses laminar flow, water-based condensational growth to enable the concentrated capture of fine and ultrafine airborne particles. Sequential aerosol samples may be collected as dry, 1-mm diameter “spots” within the individual wells of a multi-well plate. Alternatively, particles can be collected as a concentrated suspension in a small, liquid-filled vial. These Spot Samples are ‘ready to analyze’, without user extraction or manipulation. The inherent pre-concentration of the collection method saves labor, improves analysis sensitivity and enhances data quality. By using a “moderated” condensation approach the temperature of the majority of the sample never exceed 28°C, and the exiting water content is subsaturated at room temperature. This allows volatile material such as ammonium nitrate to be collected as a dry spot without significant loss. Reported here is the laboratory evaluation of this instrument using inorganic aerosols.