Skip to content
Journal article

Functional group analysis by H NMR/chemical derivatization for the characterization of organic aerosol from the SMOCC field campaign

Tagliavini E, Moretti F, Decesari S, Facchini M, Fuzzi S, Maenhaut W ...see all

Atmospheric Chemistry and Physics, vol. 6, issue 4 (2006) pp. 1003-1019

  • 8


    Mendeley users who have this article in their library.
  • 38


    Citations of this article.
  • N/A


    ScienceDirect users who have downloaded this article.
Sign in to save reference


Water soluble organic compounds (WSOC) in aerosol samples collected in the Amazon Basin in a period encompassing the middle/late dry season and the beginning of the wet season, were investigated by H NMR spectroscopy. HiVol filter samples (PM2.5 and PM>2.5) and size-segregated samples from multistage impactor were subjected to H NMR characterization. The H NMR methodology, recently developed for the analysis of organic aerosol samples, has been improved by exploiting chemical methylation of carboxylic groups with diazomethane, which allows the direct determination of the carboxylic acid content of WSOC. The content of carboxylic carbons for the different periods and sizes ranged from 12% to 20% of total measured carbon depending on the season and aerosol size, with higher contents for the fine particles in the transition and wet periods with respect to the dry period. A comprehensive picture is presented of WSOC functional groups in aerosol samples representative of the biomass burning period, as well as of transition and semi-clean atmospheric conditions. A difference in composition between fine (PM2.5) and coarse (PM>2.5) size fractions emerged from the NMR data, the former showing higher alkylic content, the latter being largely dominated by R-O-H (or R-O-R') functional groups. Very small particles (

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text


  • E. Tagliavini

  • F. Moretti

  • S. Decesari

  • M. C. Facchini

  • S. Fuzzi

  • W. Maenhaut

Cite this document

Choose a citation style from the tabs below