Use of degradation rates of DDT and lindane isomers for determining the timing of release to sediments of Greens Bayou: Houston Ship Channel, Texas

dc.acquisition-srcDownloaded from-Web of Scienceen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorWalker WJen_US
dc.contributor.authorSchreier CGen_US
dc.contributor.authorPucik LEen_US
dc.contributor.otherEnvironmental Forensicsen_US
dc.date.accessioned2010-02-15T17:18:19Z
dc.date.available2010-02-15T17:18:19Z
dc.date.issued2004 Maren_US
dc.degreeen_US
dc.description45-57en_US
dc.description-otheren_US
dc.description.abstractSediments collected from Greens Bayou, a tributary to the Houston Ship Channel, in Houston, Texas, were collected and analyzed in a laboratory study designed. to determine anaerobic degradation rates for DDT and lindane isomers in the Bayou. This site-specific degradation data was then used to estimate the time period during which DDT and lindane were released to Greens Bayou from a former chemical manufacturing plant site. Initial DDT concentrations of 100-1,000 mug/kg degraded to nondetectable levels within 8 days. Initial lindane concentrations of 250-2,500 mug/kg degraded preferentially according to isomeric structure: Alpha BHC (alpha-BHC), Beta BHC (beta-BHC), and Gamma BHC (gamma-BHC) had half-lives ranging from 1-5 days. Delta BHC (Delta-BHC) had half-lives ranging from 22-30 days. It was concluded that any discharges of DDT or lindane prior to 1971 into Greens Bayou from the chemical manufacturing plant at sediment concentrations less than 2,500 mug/kg would have degraded long prior to 1983. Persistent DDT or lindane detected at significant levels in Greens Bayou sediments today could not have been deposited in sediments until many years after 1983 and must have been deposited at concentrations or loading levels high enough to have a toxic effect on the sediment's anaerobic degradation capacityen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23613
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notesTimes Cited: 0ArticleEnglishWalker, W. JWalker & Assoc Inc, 2618 J St,Suite 1, Sacramento, CA 95816 USACited References Count: 21809UM4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDABINGDONen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries51265.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectDDTen_US
dc.subjectdegradationen_US
dc.subjectDELTAen_US
dc.subjectDISCHARGEen_US
dc.subjectGAMMA-HEXACHLOROCYCLOHEXANEen_US
dc.subjectGreens Bayouen_US
dc.subjectHouston Ship Channelen_US
dc.subjectlindaneen_US
dc.subjectPLANTen_US
dc.subjectRATESen_US
dc.subjectRELEASEen_US
dc.subjectRESIDUESen_US
dc.subjectsedimenten_US
dc.subjectsedimentsen_US
dc.subjectTEXASen_US
dc.subjecttimingen_US
dc.subjectUSAen_US
dc.titleUse of degradation rates of DDT and lindane isomers for determining the timing of release to sediments of Greens Bayou: Houston Ship Channel, Texasen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue5(1)en_US

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