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Pregled bibliografske jedinice broj: 615403

The influence of salinity on the molecular and optical properties of surface microlayers in a karstic estuary


Lechtenfeld, Oliver J.; Koch, Boris P.; Gašparović, Blaženka; Frka, Sanja; Witt, Matthias; Kattner, Gerhard
The influence of salinity on the molecular and optical properties of surface microlayers in a karstic estuary // Marine chemistry, 150 (2013), 25-38 doi:10.1016/j.marchem.2013.01.006 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 615403 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
The influence of salinity on the molecular and optical properties of surface microlayers in a karstic estuary

Autori
Lechtenfeld, Oliver J. ; Koch, Boris P. ; Gašparović, Blaženka ; Frka, Sanja ; Witt, Matthias ; Kattner, Gerhard

Izvornik
Marine chemistry (0304-4203) 150 (2013); 25-38

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
sea-surface microlayer ; ultra-high resolution mass spectrometry ; FT-ICR MS ; dissolved organic matter ; molecular composition ; optical properties

Sažetak
Sea surface microlayers and the corresponding underlying waters of the pristine, karstic Krka Estuary (Croatia) were studied with respect to optical and molecular properties of dissolved organic matter (DOM). Solid-phase extracted DOM was separated by reversed phase chromatography and analyzed with ultra-high resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). The number and summed magnitudes of FT-ICR MS peaks, enriched in the microlayer, increased consistently with salinity along the estuary. The molecular hydrogen to carbon ratio (as a measure of polarity) of enriched compounds was higher for the low salinity samples than for the marine station, which we propose is a consequence of a salt-mediated separation mechanism. Absorption and fluorescence of all samples decreased along the estuary with the microlayer samples showing higher absorption than the underlying water. Chromatographic and FT-ICR MS data revealed a distinct shift towards a smaller molecular size in the microlayer. The redistribution of dissolved organic carbon within chromatographic fractions and the decrease in molecular size was interpreted to result from photo-degradation and/or microbial reprocessing. Collision induced dissociation of selected FT ICR MS mass peaks revealed the presence of sulfur containing anthropogenic surfactants enriched in the microlayer.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekti:
098-0982934-2717 - Priroda organske tvari, interakcije s mikrokonstituentima i površinama u okolišu (Ciglenečki-Jušić, Irena, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Poveznice na cjeloviti tekst rada:

doi www.sciencedirect.com dx.doi.org

Citiraj ovu publikaciju:

Lechtenfeld, Oliver J.; Koch, Boris P.; Gašparović, Blaženka; Frka, Sanja; Witt, Matthias; Kattner, Gerhard
The influence of salinity on the molecular and optical properties of surface microlayers in a karstic estuary // Marine chemistry, 150 (2013), 25-38 doi:10.1016/j.marchem.2013.01.006 (međunarodna recenzija, članak, znanstveni)
Lechtenfeld, O., Koch, B., Gašparović, B., Frka, S., Witt, M. & Kattner, G. (2013) The influence of salinity on the molecular and optical properties of surface microlayers in a karstic estuary. Marine chemistry, 150, 25-38 doi:10.1016/j.marchem.2013.01.006.
@article{article, author = {Lechtenfeld, Oliver J. and Koch, Boris P. and Ga\v{s}parovi\'{c}, Bla\v{z}enka and Frka, Sanja and Witt, Matthias and Kattner, Gerhard}, year = {2013}, pages = {25-38}, DOI = {10.1016/j.marchem.2013.01.006}, keywords = {sea-surface microlayer, ultra-high resolution mass spectrometry, FT-ICR MS, dissolved organic matter, molecular composition, optical properties}, journal = {Marine chemistry}, doi = {10.1016/j.marchem.2013.01.006}, volume = {150}, issn = {0304-4203}, title = {The influence of salinity on the molecular and optical properties of surface microlayers in a karstic estuary}, keyword = {sea-surface microlayer, ultra-high resolution mass spectrometry, FT-ICR MS, dissolved organic matter, molecular composition, optical properties} }
@article{article, author = {Lechtenfeld, Oliver J. and Koch, Boris P. and Ga\v{s}parovi\'{c}, Bla\v{z}enka and Frka, Sanja and Witt, Matthias and Kattner, Gerhard}, year = {2013}, pages = {25-38}, DOI = {10.1016/j.marchem.2013.01.006}, keywords = {sea-surface microlayer, ultra-high resolution mass spectrometry, FT-ICR MS, dissolved organic matter, molecular composition, optical properties}, journal = {Marine chemistry}, doi = {10.1016/j.marchem.2013.01.006}, volume = {150}, issn = {0304-4203}, title = {The influence of salinity on the molecular and optical properties of surface microlayers in a karstic estuary}, keyword = {sea-surface microlayer, ultra-high resolution mass spectrometry, FT-ICR MS, dissolved organic matter, molecular composition, optical properties} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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