Four fractions of dissolved organic matter (DOM) (hydrophobic acids, HPO-A; hydrophobic neutrals HPO-N; amphiphilic acids, AMP-A; and amphiphilic neutrals, AMP-N) were identified using electrospray ionization coupled to ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometer. The fractions were isolated from an off-stream Colorado River water reservoir in Arizona, USA. A great portion of heteroatom-containing (i.e., N, S, P) formulas were identified in the neutrals. Only 3.8% of the identified molecules were common between four fractions. The neutral fractions showed a high portion of high-intensity S-containing molecules which can be attributed to textile surfactants (i.e., linear alkylbenzene sulfonates, etc.) and their biodegradation and biotransformation derivatives indicating anthropogenic input on-site.

Original languageEnglish (US)
Title of host publicationFunctions of Natural Organic Matter in Changing Environment
PublisherSpringer Netherlands
Number of pages6
ISBN (Print)9789400756342, 940075633X, 9789400756335
StatePublished - Aug 1 2012



  • Amphiphilic
  • DOM
  • Electrospray ionization
  • ESI
  • Hydrophobic

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Environmental Science(all)
  • Engineering(all)

Cite this

Song, G., Mesfiou, R., Dotson, A., Westerhoff, P., & Hatcher, P. (2012). Sulfur-containing molecules observed in hydrophobic and amphiphilic fractions of dissolved organic matter by fourier transform ion cyclotron resonance mass spectrometry. In Functions of Natural Organic Matter in Changing Environment (Vol. 9789400756342, pp. 79-84). Springer Netherlands. https://doi.org/10.1007/978-94-007-5634-2_14