Direct Spectroscopic Quantification of the Absorption and Scattering Properties for Single Aerosol Particles.

ABSTRACT: Understanding the optical properties of micrometer-scale light-absorbing aerosol particles is of paramount importance in addressing key challenges in atmospheric and physical chemistry. For example, the absorption of solar radiation by atmospheric aerosols represents one of the largest uncertainties in climate models. Moreover, reaction acceleration within the unique environments of aerosol droplets cannot be replicated in bulk solutions. The causes of these reaction rate enhancements remain controversial, but ultrasensitive spectroscopic measurements of evolving aerosol optical properties should provide new insights. We demonstrate a new approach using cavity ring-down spectroscopy that allows the first direct spectroscopic quantification of the continuously evolving absorption and scatte

SUBMITTER: Knight JW 

PROVIDER: S-EPMC9097522 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature