In situ analysis of the bulk and surface chemical compositions of organic aerosol particles.

ABSTRACT: Understanding the chemical and physical properties of particles is an important scientific, engineering, and medical issue that is crucial to air quality, human health, and environmental chemistry. Of special interest are aerosol particles floating in the air for both indoor virus transmission and outdoor atmospheric chemistry. The growth of bio- and organic-aerosol particles in the air is intimately correlated with chemical structures and their reactions in the gas phase at aerosol particle surfaces and in-particle phases. However, direct measurements of chemical structures at aerosol particle surfaces in the air are lacking. Here we demonstrate in situ surface-specific vibrational sum frequency scattering (VSFS) to directly identify chemical structures of molecules at aerosol particle su

SUBMITTER: Qian Y 

PROVIDER: S-EPMC9814772 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature