Molecular characterization of ultrafine particles using extractive electrospray time-of-flight mass spectrometry.

ABSTRACT: Aerosol particles negatively affect human health while also having climatic relevance due to, for example, their ability to act as cloud condensation nuclei. Ultrafine particles (diameter D _p < 100 nm) typically comprise the largest fraction of the total number concentration, however, their chemical characterization is difficult because of their low mass. Using an extractive electrospray time-of-flight mass spectrometer (EESI-TOF), we characterize the molecular composition of freshly nucleated particles from naphthalene and β-caryophyllene oxidation products at the CLOUD chamber at CERN. We perform a detailed intercomparison of the organic aerosol chemical composition measured by the EESI-TOF and an iodide adduct chemical ionization mass spectrometer equipped with a filte

SUBMITTER: Surdu M 

PROVIDER: S-EPMC8459645 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature