scholarly journals Comparison of seasonal changes in fluorescent dissolved organic matter among aquatic lake and stream sites in the Green Lakes Valley

2010 ◽  
Vol 115 ◽  
Author(s):  
Matthew P. Miller ◽  
Diane M. McKnight
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Seasonal Changes ◽  
Fluorescent Dissolved Organic Matter ◽  
Green Lakes Valley

Production and degradation of fluorescent dissolved organic matter derived from bacteria

2017 ◽  
Vol 74 (1) ◽  
pp. 39-52 ◽  
Author(s):  
Ken Arai ◽  
Shigeki Wada ◽  
Koichi Shimotori ◽  
Yuko Omori ◽  
Takeo Hama
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Fluorescent Dissolved Organic Matter

Temperature, turbidity, and the inner filter effect correction methodology for analyzing fluorescent dissolved organic matter in urban sewage

2020 ◽  
Vol 27 (28) ◽  
pp. 35712-35723
Author(s):  
Angélique Goffin ◽  
Laura Alejandra Vasquez-Vergara ◽  
Sabrina Guérin-Rechdaoui ◽  
Vincent Rocher ◽  
Gilles Varrault
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Inner Filter Effect ◽  
Urban Sewage ◽  
Fluorescent Dissolved Organic Matter ◽  
Filter Effect

Changes in fluorescent dissolved organic matter and their association with phytoavailable phosphorus in soil amended with TiO2 nanoparticles

Chemosphere ◽  
2019 ◽  
Vol 227 ◽  
pp. 17-25 ◽  
Author(s):  
Zahra Zahra ◽  
Tahir Maqbool ◽  
Muhammad Arshad ◽  
Mohsin Ali Badshah ◽  
Hyung-Kyoon Choi ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Tio2 Nanoparticles ◽  
Fluorescent Dissolved Organic Matter

scholarly journals The influence of dissolved organic matter on the marine production of carbonyl sulfide (OCS) and carbon disulfide (CS<sub>2</sub>) in the Peruvian upwelling

Ocean Science ◽  
2019 ◽  
Vol 15 (4) ◽  
pp. 1071-1090 ◽  
Author(s):  
Sinikka T. Lennartz ◽  
Marc von Hobe ◽  
Dennis Booge ◽  
Henry C. Bittig ◽  
Tim Fischer ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Carbon Disulfide ◽  
Solid Phase ◽  
Carbonyl Sulfide ◽  
Limiting Factors ◽  
Biogeochemical Model ◽  
Fluorescent Dissolved Organic Matter ◽  
Process Understanding ◽  
Future Emission

Abstract. Oceanic emissions of the climate-relevant trace gases carbonyl sulfide (OCS) and carbon disulfide (CS2) are a major source to their atmospheric budget. Their current and future emission estimates are still uncertain due to incomplete process understanding and therefore inexact quantification across different biogeochemical regimes. Here we present the first concurrent measurements of both gases together with related fractions of the dissolved organic matter (DOM) pool, i.e., solid-phase extractable dissolved organic sulfur (DOSSPE, n=24, 0.16±0.04 µmol L−1), chromophoric (CDOM, n=76, 0.152±0.03), and fluorescent dissolved organic matter (FDOM, n=35), from the Peruvian upwelling region (Guayaquil, Ecuador to Antofagasta, Chile, October 2015). OCS was measured continuously with an equilibrator connected to an off-axis integrated cavity output spectrometer at the surface (29.8±19.8 pmol L−1) and at four profiles ranging down to 136 m. CS2 was measured at the surface (n=143, 17.8±9.0 pmol L−1) and below, ranging down to 1000 m (24 profiles). These observations were used to estimate in situ production rates and identify their drivers. We find different limiting factors of marine photoproduction: while OCS production is limited by the humic-like DOM fraction that can act as a photosensitizer, high CS2 production coincides with high DOSSPE concentration. Quantifying OCS photoproduction using a specific humic-like FDOM component as proxy, together with an updated parameterization for dark production, improves agreement with observations in a 1-D biogeochemical model. Our results will help to better predict oceanic concentrations and emissions of both gases on regional and, potentially, global scales.

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