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Herzsprung, P.* ; von Tümpling, W.* ; Hertkorn, N. ; Harir, M. ; Büttner, O.* ; Bravidor, J.* ; Friese, K.* ; Schmitt-Kopplin, P.

Variations of DOM quality in inflows of a drinking water reservoir: Linking of van Krevelen diagrams with EEMF spectra by rank correlation.

Environ. Sci. Technol. 46, 5511-5518 (2012)

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Open Access Green as soon as Postprint is submitted to ZB.

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Elevated concentrations of dissolved organic matter (DOM) such as humic substances in raw water pose significant challenges during the processing of the commercial drinking water supplies. This is a relevant issue in Saxony, Central East Germany, and many other regions worldwide, where drinking water is produced from raw waters with noticeable presence of chromophoric DOM (CDOM), which is assumed to originate from forested watersheds in spring regions of the catchment area. For improved comprehension of DOM molecular composition, the seasonal and spatial variations of humic-like fluorescence and elemental formulas in the catchment area of the Muldenberg reservoir were recorded by excitation emission matrix fluorescence (EEMF) and ultrahigh-resolution mass spectrometry (FT-ICR-MS). The Spearman rank correlation was applied to link the EEMF intensities with exact molecular formulas and their corresponding relative mass peak abundances. Thereby, humic-like fluorescence could be allocated to the pool of oxygen-rich and relatively unsaturated components with stoichiometries similar to those of tannic acids, which are suspected to have a comparatively high disinfection byproduct formation potential associated with the chlorination of raw water. Analogous relationships were established for UV absorption at 254 nm (UV254) and dissolved organic carbon (DOG) and compared to the EEMF correlation.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords DISSOLVED ORGANIC-MATTER; RESOLUTION MASS-SPECTROMETRY; PARALLEL FACTOR-ANALYSIS; FLUORESCENCE SPECTROSCOPY; MOLECULAR CHARACTERIZATION; PORE WATERS; CARBON; ELECTROSPRAY; PARAFAC; LAKES

ISSN (print) / ISBN 0013-936X

e-ISSN 1520-5851

Journal Environmental Science & Technology

Quellenangaben Volume: 46, Issue: 10, Pages: 5511-5518

Publisher ACS

Publishing Place Washington, DC

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Research Unit BioGeoChemistry and Analytics (BGC)