A miniature, battery-powered monitor will be developed for measurement of hourly concentrations of chemical constituents of PM2.5 aerosols that are important to human exposure. The method utilizes a laminar-flow, water condensation method to provide a concentrated, """"""""ready-to-analyze"""""""" deposit of ambient particles. Many deposits will be contained on a single collection wafer designed for automatic analysis by common liquid chromatographic methods. The objective is wide-scale, inexpensive time-resolved monitoring of individual constituents of ambient particulate matter for personal exposures assessment.
Proposed is the development of a compact, battery powered monitor to provide time-resolved measurements of personal exposures to many of the toxic chemical components of PM2.5. Short- term exposures to high levels may be important for understand the respiratory and cardiovascular health effects of exposure. This research improves the time-resolution and the range of chemical components that can be measured in personal monitoring studies.
|Hering, Susanne V; Spielman, Steven R; Lewis, Gregory S (2014) Moderated, Water-Based, Condensational Particle Growth in a Laminar Flow. Aerosol Sci Technol 48:401-408|
|Zauscher, Melanie D; Moore, Meagan J K; Lewis, Gregory S et al. (2011) Approach for measuring the chemistry of individual particles in the size range critical for cloud formation. Anal Chem 83:2271-8|