Now showing items 1-5 of 5
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 ...
Biogeochemical behavior of organic carbon in the Trinity River downstream of a large reservoir lake in Texas, USA
(, 2004 Aug)
Dissolved and particulate organic carbon concentrations were measured and annual loads estimated for the Trinity River, the main freshwater input source to Galveston Bay, which lies on the upper Gulf coast of Texas, USA, ...
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 ...
Colloidal pumping: Evidence for the coagulation process using natural colloids tagged with Hg-203
(, 1996 Nov)
Colloids isolated from waters of the Trinity River (Texas) were tagged with high specific activity mercury (Hg-203) and re-equilibrated with ultrafiltered water and particles. The transfer of radioisotopic Hg from the ...
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 ...