Now showing items 1-6 of 6
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 ...
Nitrogen and carbon isotopic composition of high-molecular-weight dissolved organic matter in marine environments
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 ...
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 ...
Colloidal and particulate silver in river and estuarine waters of Texas
(, 1997 Mar)
Concentration and phase speciation of Ag in selected Texas rivers and in the Trinity River estuary were measured in order to establish the major factors that control its fate in the aquatic environment from source to sink. ...
An ultraclean cross-flow ultrafiltration technique for the study of trace metal phase speciation in seawater
(, 1996 Nov)
A series of laboratory and field studies were conducted to test suitability and optimal sampling conditions of an Amicon ultrafiltration system for the collection of colloidal material for trace metal phase speciation ...
Fibrillar polysaccharides in marine macromolecular organic matter as imaged by atomic force microscopy and transmission electron microscopy
(, 1998 Jul)
A consensus is now emerging that the structure of organic macromolecules will determine their function in aquatic systems. Transmission electron microscopy (TEM) is a widely used technique to study the morphology of ...