Organic and organometallic compounds in estuarine sediments from the Gulf of Mexico (1993-1994)

dc.acquisition-srcDownloaded from-BIOSISen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorMaruya KA; Loganathan BG; Kannan K; McCumber-Kahn S; Lee RFen_US
dc.contributor.editoren_US
dc.contributor.otherEstuariesen_US
dc.date.accessioned2010-02-15T17:12:57Z
dc.date.available2010-02-15T17:12:57Z
dc.date.issued1997en_US
dc.degreeen_US
dc.description700-709en_US
dc.description-otheren_US
dc.description.abstractSediment samples from 281 estuarine sites in the Gulf of Mexico were collected in 1993-1994 and analyzed for several classes of organic and organometallic compounds as part of the Environmental Monitoring and Assessment Program of the United States Environmental Protection Agency. Polynuclear aromatic hydrocarbons (PAHs) were the contaminant class found most frequently and in the highest concentrations; the sum of 24 congeners (SIGMAPAHs) ranged from < 5 ng g-1 to 15,500 ng g-1 (dry wt basis). A low percentage of samples (3.9%) exceeded 2000 ng g-1 SIGMAPAHs, and only six samples (2.1%) exceeded 4000 ng g-1, a level above which adverse biological effects may be expected to occur. Less than 4% of sediments exceeded 20 ng g-1 for the sum of 20 polychlorinated biphenyls (SIGMAPCBs) and only four samples (1.4%) exceeded 20 ng g-1 for the sum of several organochlorine pesticides (SIGMAOCPs). A sample from Freeport Harbor, Texas, contained 4230 ng g-1 SIGMAPAHs 322 ng g-1 SIGMAPCBs, and 49.6 ng g-1 SIGMAOCPs. Tributyltin exceeded 100 ng g-1 in only four samples, all of which were from stations in Corpus Christi Bay or Galveston Bay in Texas. The detection of a suite of organophosphate pesticides was very rare and did not exceed 15 ng g-1. Sediments from the tidally influenced section of the Mississippi River in Louisiana contained low to moderate levels of all classes of organic compounds. The most contaminated sites were in urban estuaries (e.g., Corpus Christi, Galveston, and Pensacola (Florida bays), underscoring the need to concentrate future monitoring and assessment efforts at the regional and local levelen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/22864
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notesDB - BIOSIS PreviewsAN - PREV199800099436IN - Skidaway Inst. Oceanography, 10 Ocean Science Circle, Savannah, GA 31411, USACY - USAPT - ArticleLG - Englishen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries50283.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectcontaminated sediments;organochlorine pesticides: pollutant; organophosphate pesticides: pollutant; polychlorinated biphenyls: pollutant; polycyclic aromatic hydrocarbons: pollutant; tributyltin: pollutant;Pollution Assessment Control and Management;tributyltin;[07502] Ecology: environmental biology - General and methods;[37015] Public health - Air,water and soil pollution;en_US
dc.titleOrganic and organometallic compounds in estuarine sediments from the Gulf of Mexico (1993-1994)en_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue20(4)en_US

Files