title: Characterization of complex assemblages of organic acids in geological samples by negative electrospray ionization mass spectrometry using a double-focusing magnetic sector field mass spectrometer.
authors.affiliation: Helmholtz-Centre Potsdam, German Research Centre for Geosciences (GFZ), Section 4.3, Organic Geochemistry, Telegrafenberg, D-14473 Potsdam, Germany. poetz@gfz-potsdam.de
authors.forename: Stefanie
authors.initials: S
authors.lastname: Pötz
authors.forename: Heinz
authors.initials: H
authors.lastname: Wilkes
authors.forename: Matthias
authors.initials: M
authors.lastname: Witt
authors.forename: Brian
authors.initials: B
authors.lastname: Horsfield