Trace metals contamination of sediments and organisms from the Swan Lake area of Galveston Bay

dc.acquisition-srcDownloaded from-Web of Scienceen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorPark Jen_US
dc.contributor.authorPresley BJen_US
dc.contributor.otherEnvironmental Pollutionen_US
dc.date.accessioned2010-02-15T17:17:20Z
dc.date.available2010-02-15T17:17:20Z
dc.date.issued1997en_US
dc.degreeen_US
dc.description209-221en_US
dc.description-otheren_US
dc.description.abstractSwan Lake is a sub-bay of the Galveston Bay system. The area received runoff from a tin smelter during the 1940s and 1950s via a dredged channel called the Wah Chang Ditch. The ditch was cut off by a hurricane protection levee in 1968. An industrial waste disposal facility borders the area on the north and the surrounding region is highly industrialized. Consequently, there is ample potential for metal contamination. In this study, concentrations of Ag, Al, As, Cd, Cu, Fe, Hg, Mn, Ni, Pb, Se, Sn and Zn were determined in sediments and organisms (oyster, mussel, snail, crab, fish, shrimp, and marsh grass). The geographic trends in trace metal concentrations in sediments strongly suggest that tin smelter residues cause elevations relative to sediment from Galveston Bay and other Texas bays. Especially high concentrations were found along the Wah Chang Ditch, neat Highway 197 and in the NE corner of Swan Lake. Sediment in these areas was as high as 8000 ppm in Sn, 3700 ppm in Pb, and 500 ppm in As. Concentrations varied widely over small space scales and with depth in the sediment column due to differential erosion and deposition. Surface sediment was, however, generally much less contaminated than deeper sediment, indicating less input of metal recently than in the past. In contrast to other metals, anthropogenic inputs have not greatly influenced the natural concentrations of Fe, Al and Ni in sediments. Most organisms showed very small spatial variations in metal concentration. However, the oysters in Swan Lake were found to be enriched in most metals relative to those from Galveston Bay and other US Gulf of Mexico areas. The mussels analyzed for this study did not reflect the highly elevated metal concentrations in the sediments fi om which they were taken. Iron and Pb concentrations in oysters seemed to be directly related to sediment concentrations at each location. For the organisms collected, trace metal concentrations were generally in the order oysters > snail > crab > shrimp > fish. (C) 1998 Elsevier Science Ltd. All rights reserveden_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23479
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dc.notesTimes Cited: 10ArticleEnglishPark, JTexas A&M Univ, Dept Oceanog, College Stn, TX 77843 USACited References Count: 23YY083THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDOXFORDen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries51125.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectmetal pollutionen_US
dc.subjecttrace metalsen_US
dc.subjecttin smelteren_US
dc.subjectanthropogenic inputen_US
dc.subjectsedimentsen_US
dc.subjectBIOACCUMULATIONen_US
dc.subjectHEAVY-METALSen_US
dc.subjectMEXICOen_US
dc.subjectGULFen_US
dc.subjectACCUMULATIONen_US
dc.titleTrace metals contamination of sediments and organisms from the Swan Lake area of Galveston Bayen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue98(2)en_US
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