Development of a Portable Aerosol Collector and Spectrometer (PACS).

ABSTRACT: This article presents the development of a Portable Aerosol Collector and Spectrometer (PACS), an instrument designed to measure particle number, surface area, and mass concentrations continuously and time-weighted mass concentration by composition from 10 nm to 10 μm. The PACS consists of a six-stage particle size selector, a valve system, a water condensation particle counter to detect number concentrations, and a photometer to detect mass concentrations. The stages of the selector include three impactor and two diffusion stages, which resolve particles by size and collect particles for later chemical analysis. Particle penetration by size was measured through each stage to determine actual collection performance and account for particle losses. The data inversion algorithm uses an adapt

SUBMITTER: Cai C 

PROVIDER: S-EPMC10468716 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature