Investigating the Ionization of Dissolved Organic Matter by Electrospray.

ABSTRACT: Electrospray ionization (ESI) operating in the negative mode coupled to high-resolution mass spectrometry is the most popular technique for the characterization of dissolved organic matter (DOM). The vast molecular heterogeneity and the functional group diversity of this complex mixture prevents the efficient ionization of the organic material by a single ionization source, so the presence of uncharacterized material is unavoidable. The extent of this poorly ionizable pool of carbon is unknown, is presumably variable between samples, and can only be assessed by the combination of analysis with a uniform detection method. Charged aerosol detection (CAD), whose response is proportional to the amount of nonvolatile material and is independent from the physicochemical properties of the analyte

SUBMITTER: Patriarca C 

PROVIDER: S-EPMC7584329 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature