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Organic complexation of copper in surface waters of Galveston Bay
(, 2001 Mar)
The importance of colloidal ligands in the organic complexation of Cu was elucidated in the estuarine waters of Galveston Bay by use of a number of instrumental techniques. Ultrafiltration was conducted to isolate the ...
Trace metal composition of colloidal organic material in marine environments
(, 2000 Jun)
Marine colloidal material (1 kDa-0.2 mu m) was isolated by cross-flow ultrafiltration followed by diafiltration and freeze-drying from surface waters of the Gulf of Mexico and the Middle Atlantic Eight (MAB), as well as ...
Th-234 scavenging and its relationship to acid polysaccharide abundance in the Gulf of Mexico
(, 2002 May)
Size-fractionated particulate Th-234 and acid polysaccharides (APS) were collected from stations along a transect in the Gulf of Mexico, in order to examine the role of APS content in controlling the extent and rates of ...
Analysis of biogenic thiols in natural water samples by high-performance liquid chromatographic separation and fluorescence detection with ammonium 7-fluorobenzo-2-oxa-1,3-diazole-4-sulfonate (SBD-F)
(, 2000 Mar 9)
A sensitive and reliable reversed-phase high-performance liquid chromatography (HPLC) method has been developed to analyze naturally occurring low-molecular weight thiols using pre-column derivatization with ammonium ...
Nitrogen and carbon isotopic composition of high-molecular-weight dissolved organic matter in marine environments
(, 2003)
High-molecular-weight (HMW) dissolved organic matter (DOM) was isolated using cross-flow ultrafiltration from seawater across a salinity gradient in 2 estuarine/coastal marine environments-Chesapeake Bay/Middle Atlantic ...
Distributions of carbohydrates, including uronic acids, in estuarine waters of Galveston Bay
(, 2001 Mar)
The concentrations of carbohydrates, including uronic acids, in dissolved (Galveston Bay, TX, in order to study their role in heavy metal detoxification. The concentrations of dissolved monosaccharides (MCHO) in Galveston ...
Metal partitioning between colloidal and dissolved phases and its relation with bioavailability to American oysters
(, 2002)
Kinetics and the extent of metal partitioning between colloidal and dissolved phases and coagulation of metals associated with colloids were examined to determine their effects on the bioavailability of selected metals ...
The distribution of biogenic thiols in surface waters of Galveston Bay
(, 2000 Sep)
Thiolic compounds are important metal-complexing ligands as well as important components of the global sulfur biogeochemical cycle. A lack of information on the concentration and distribution of thiols in natural waters, ...
Distribution and partitioning of trace metals (Cd, Cu, Ni, Pb, Zn) in Galveston Bay waters
(, 2002 Apr)
The distribution of several trace metals has been studied in the surface waters of Galveston Bay, Texas, in order to assess the impact of complexation with organic and reduced sulfur species on the partitioning of trace ...
Sediment-water exchange of Mn, Fe, Ni and Zn in Galveston Bay, Texas
(, 2001 Mar)
In-situ benthic flux studies were conducted at three stations in Upper Galveston Bay twice during March 1996 to directly measure release rates of dissolved Mn, Fe, Mi and Zn from the sediments. Results showed reproducible ...