Now showing items 1-6 of 6
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 ...
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 ...
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, ...
Interactions between radioactively labeled colloids and natural particles: Evidence for colloidal pumping
(, 1997 Jul)
It has been hypothesized that colloidal forms of trace metals can be reactive intermediaries in the scavenging processes leading to the removal of their particulate forms. A series of radiotracer experiments using natural ...
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 ...
Sensitive determination of dissolved sulfide in estuarine water by solid-phase extraction and high-performance liquid chromatography of methylene blue
(, 2000 Jun 2)
A sensitive method involving solid-phase extraction and HPLC analysis of methylene blue has been developed to measure nanomolar levels of dissolved sulfide in oxic surface waters. The procedure included 1) a preconcentration ...