Colloidal and particulate silver in river and estuarine waters of Texas

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dc.acquisition-srcDownloaded from-Water Resources Abstractsen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorWen LSen_US
dc.contributor.authorSantschi PHen_US
dc.contributor.authorGill GAen_US
dc.contributor.authorPaternostro CLen_US
dc.contributor.authorLehman RDen_US
dc.contributor.otherEnvironmental Science & Technologyen_US
dc.date.accessioned2010-02-15T17:15:40Z
dc.date.available2010-02-15T17:15:40Z
dc.date.issued1997 Maren_US
dc.degreeen_US
dc.description723-731en_US
dc.description-otheren_US
dc.description.abstractConcentration 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. Concentrations of Ag in the filter-passing fractions in Texas rivers ranged from <0.01 to 62 ng/L. In the Trinity River estuary (Galveston Bay), they ranged from 0.4 to 6.4 ng/L and showed a non-conservative estuarine mixing behavior. An internal source of filter-passing ( less than or equal to 0.45 mu m) and colloidal (1 kDa-0.45 mu m) Ag was observed in the upper Trinity Bay. Silver, associated with colloidal macromolecular organic matter, which was isolated using cross-flow ultrafiltration techniques, amounted to 15-70% of the filtered ( less than or equal to 0.45 mu m) Ag concentration, decreasing with increasing salinity. Such a trend was similar to that of dissolved and colloidal organic carbon. Estuarine distributions of colloidal Ag were also broadly similar to those of suspended particulate matter. The ratio of colloidal Ag to filter-passing Ag was similar to the ratio of colloidal organic carbon to total dissolved organic carbon, suggesting not only that Ag is complexed by organic macromolecules but also that functional groups with high affinity for Ag were evenly distributed over the different molecular weight fractionsen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23242
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notes0013-936XEnglishEnglishJournal Articleen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries50827.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectaquatic environmenten_US
dc.subjectBAYen_US
dc.subjectcolloidsen_US
dc.subjectEnvironmenten_US
dc.subjectEstuariesen_US
dc.subjectGALVESTONen_US
dc.subjectGalveston Bayen_US
dc.subjectORGANIC CARBONen_US
dc.subjectORGANIC MATTERen_US
dc.subjectP 2000 FRESHWATER POLLUTIONen_US
dc.subjectRiversen_US
dc.subjectSALINITYen_US
dc.subjectsilveren_US
dc.subjectSW 3020 Sources and fate of pollutionen_US
dc.subjectTexasen_US
dc.subjecttrace metalsen_US
dc.subjectTRINITY RIVERen_US
dc.subjectTXen_US
dc.subjectUSA,Texas,Trinity R.en_US
dc.subjectWATERen_US
dc.subjectwater samplingen_US
dc.titleColloidal and particulate silver in river and estuarine waters of Texasen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue31(3)en_US

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GBIC Abstracts (full text not available through Jack K. Williams Library)