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Spatial Dependence of Reduced Sulfur in Everglades Dissolved Organic Matter Controlled by Sulfate Enrichment

Journal Article · · Environmental Science and Technology
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8]
  1. U.S. Geological Survey, Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
  2. Univ. of Colorado, Boulder, CO (United States)
  3. Univ. of Illinois, Chicago, IL (United States)
  4. Univ. of Georgia, Savannah, GA (United States)
  5. Univ. of Oldenburg (Germany)
  6. U.S. Geological Survey, Reston, VA (United States)
  7. U.S. Geological Survey, Middleton, WI (United States)
  8. U.S. Geological Survey, Boulder, CO (United States)
Sulfate inputs to the Florida Everglades stimulate sulfidic conditions in freshwater wetland sediments that affect ecological and biogeochemical processes. An unexplored implication of sulfate enrichment is alteration of the content and speciation of sulfur in dissolved organic matter (DOM), which influences the reactivity of DOM with trace metals. Here, we describe the vertical and lateral spatial dependence of sulfur chemistry in the hydrophobic organic acid fraction of DOM from unimpacted and sulfate-impacted Everglades wetlands using X-ray absorption spectroscopy and ultrahigh-resolution mass spectrometry. Spatial variation in DOM sulfur content and speciation reflects the degree of sulfate enrichment and resulting sulfide concentrations in sediment pore waters. Sulfur is incorporated into DOM predominantly as highly reduced species in sulfidic pore waters. Sulfur-enriched DOM in sediment pore waters exchanges with overlying surface waters and the sulfur likely undergoes oxidative transformations in the water column. Across all wetland sites and depths, the total sulfur content of DOM correlated with the relative abundance of highly reduced sulfur functionality. Here, the results identify sulfate input as a primary determinant on DOM sulfur chemistry to be considered in the context of wetland restoration and sulfur and trace metal cycling.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation; USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1351336
Journal Information:
Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 7 Vol. 51; ISSN 0013-936X
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (63)

Detecting the signature of permafrost thaw in Arctic rivers: SIGNATURE OF PERMAFROST THAW IN RIVERS journal April 2015
From mass to structure: an aromaticity index for high-resolution mass data of natural organic matter journal February 2006
Photochemical degradation of natural organic sulfur compounds (CHOS) from iron-rich mine pit lake pore waters - an initial understanding from evaluation of single-elemental formulae using ultra-high-resolution mass spectrometry journal September 2010
An ultrahigh-resolution mass spectrometry index to estimate natural organic matter lability: FTICRMS organic matter molecular lability index journal November 2015
Geochemistry of aquatic humic substances in the Lake Fryxell Basin, Antarctica journal September 1996
Comparison of dialysis and solid-phase extraction for isolation and concentration of dissolved organic matter prior to Fourier transform ion cyclotron resonance mass spectrometry journal June 2012
Effects of dissolved organic matter (DOM) sources and nature of solid extraction sorbent on recoverable DOM composition: Implication into potential lability of different compound groups journal April 2016
Projecting Changes in Everglades Soil Biogeochemistry for Carbon and Other Key Elements, to Possible 2060 Climate and Hydrologic Scenarios journal November 2014
Isolation of hydrophilic organic acids from water using nonionic macroporous resins journal July 1992
Using X-ray absorption to probe sulfur oxidation states in complex molecules journal October 1998
Ultraviolet absorbance as a proxy for total dissolved mercury in streams journal June 2009
Dissolution of cinnabar (HgS) in the presence of natural organic matter journal March 2005
Molecular characterization of dissolved organic matter in pore water of continental shelf sediments journal June 2009
Quantitative analysis of sulfur functional groups in natural organic matter by XANES spectroscopy journal December 2012
Biogeochemistry of dissolved organic matter in an anoxic intertidal creek bank journal September 2014
Molecular alteration of marine dissolved organic matter under experimental hydrothermal conditions journal February 2016
Molecular evidence for abiotic sulfurization of dissolved organic matter in marine shallow hydrothermal systems journal October 2016
Non-steady state diagenesis of organic and inorganic sulfur in lake sediments journal December 2016
Novel insights into the molecular structure of non-volatile marine dissolved organic sulfur journal January 2015
Illuminating the deep: Molecular signatures of photochemical alteration of dissolved organic matter from North Atlantic Deep Water journal December 2015
Sulfur isotopic composition of individual organic compounds from Cariaco Basin sediments journal March 2015
Molecular characterization of effluent organic matter identified by ultrahigh resolution mass spectrometry journal April 2011
Fundamentals of Molecular Formula Assignment to Ultrahigh Resolution Mass Data of Natural Organic Matter journal February 2007
Linking the Molecular Signature of Heteroatomic Dissolved Organic Matter to Watershed Characteristics in World Rivers journal July 2015
Analysis of Organic Anionic Surfactants in Fine and Coarse Fractions of Freshly Emitted Sea Spray Aerosol journal February 2016
Photochemical and Nonphotochemical Transformations of Cysteine with Dissolved Organic Matter journal May 2016
Structure, Bonding, and Stability of Mercury Complexes with Thiolate and Thioether Ligands from High-Resolution XANES Spectroscopy and First-Principles Calculations journal December 2015
Role of Sulfur in the Transformations of Sedimentary Organic Matter: A Mechanistic Overview book May 1995
Advanced Instrumental Approaches for Characterization of Marine Dissolved Organic Matter:  Extraction Techniques, Mass Spectrometry, and Nuclear Magnetic Resonance Spectroscopy journal February 2007
Chemistry of Iron Sulfides journal February 2007
Addition of Hydrogen Sulfide to Juglone journal June 2002
Binding of Mercury(II) to Dissolved Organic Matter:  The Role of the Mercury-to-DOM Concentration Ratio journal August 2002
Evaluation of Specific Ultraviolet Absorbance as an Indicator of the Chemical Composition and Reactivity of Dissolved Organic Carbon journal October 2003
Stability of Metal−Glutathione Complexes during Oxidation by Hydrogen Peroxide and Cu(II)-Catalysis journal February 2007
Influence of Dissolved Organic Matter on the Environmental Fate of Metals, Nanoparticles, and Colloids journal April 2011
Metallothionein-Like Multinuclear Clusters of Mercury(II) and Sulfur in Peat journal September 2011
Formation of Nanocolloidal Metacinnabar in Mercury-DOM-Sulfide Systems journal November 2011
Potential for Abiotic Reduction of Pesticides in Prairie Pothole Porewaters journal March 2012
Bisulfide Reaction with Natural Organic Matter Enhances Arsenite Sorption: Insights from X-ray Absorption Spectroscopy journal October 2012
Microscale Characterization of Sulfur Speciation in Lake Sediments journal February 2013
Effect of Dissolved Organic Matter Source and Character on Microbial Hg Methylation in Hg–S–DOM Solutions journal May 2013
What’s in an EEM? Molecular Signatures Associated with Dissolved Organic Fluorescence in Boreal Canada journal August 2014
Evidence for Incorporation of H 2 S in Groundwater Fulvic Acids from Stable Isotope Ratios and Sulfur K-edge X-ray Absorption Near Edge Structure Spectroscopy journal February 2008
Mercury Cycling in Stream Ecosystems. 1. Water Column Chemistry and Transport journal April 2009
Enhanced Dissolution of Cinnabar (Mercuric Sulfide) by Dissolved Organic Matter Isolated from the Florida Everglades journal November 1998
Inhibition of Precipitation and Aggregation of Metacinnabar (Mercuric Sulfide) by Dissolved Organic Matter Isolated from the Florida Everglades journal May 1999
Evidence of Incorporation of Abiotic S and N into Prairie Wetland Dissolved Organic Matter journal August 2014
Methylmercury concentrations and production rates across a trophic gradient in the northern Everglades journal March 1998
Competition among thiols and inorganic sulfides and polysulfides for Hg and MeHg in wetland soils and sediments under suboxic conditions: Illumination of controversies and implications for MeHg net production: COMPETITION AMONG S LIGANDS FOR Hg journal June 2008
Geochemical formation of organosulphur compounds (thiols) by addition of H2S to sedimentary organic matter journal October 1987
Selective fluorescent probes for live-cell monitoring of sulphide journal September 2011
Methionine residues as endogenous antioxidants in proteins journal December 1996
Influence of Changing Water Sources and Mineral Chemistry on the Everglades Ecosystem journal February 2011
Dissolved Organic Matter in the Florida Everglades: Implications for Ecosystem Restoration journal February 2011
Sulfur in the South Florida Ecosystem: Distribution, Sources, Biogeochemistry, Impacts, and Management for Restoration journal February 2011
ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT journal June 2005
Use of ESI-FTICR-MS to Characterize Dissolved Organic Matter in Headwater Streams Draining Forest-Dominated and Pasture-Dominated Watersheds journal December 2015
Stability of Reduced Organic Sulfur in Humic Acid as Affected by Aeration and pH journal May 2001
Associations Between the Molecular and Optical Properties of Dissolved Organic Matter in the Florida Everglades, a Model Coastal Wetland System journal November 2015
Illuminated darkness: Molecular signatures of Congo River dissolved organic matter and its photochemical alteration as revealed by ultrahigh precision mass spectrometry journal May 2010
A mini-electrodialysis system for desalting small volume saline samples for Fourier transform ion cyclotron resonance mass spectrometry: Mini-ED-DOM desalting for FT-ICR MS journal December 2011
High-field NMR spectroscopy and FTICR mass spectrometry: powerful discovery tools for the molecular level characterization of marine dissolved organic matter journal January 2013
Molecular characterization of dissolved organic matter from subtropical wetlands: a comparative study through the analysis of optical properties, NMR and FTICR/MS journal January 2016

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