A preliminary assessment of polycyclic aromatic hydrocarbon distributions in the lower Mississippi River and Gulf of Mexico

Simple item page
dc.acquisition-srcDownloaded from-Web of Scienceen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorMitra Sen_US
dc.contributor.authorBianchi TSen_US
dc.contributor.otherMarine Chemistryen_US
dc.date.accessioned2010-02-15T17:16:54Z
dc.date.available2010-02-15T17:16:54Z
dc.date.issued2003 Augen_US
dc.degreeen_US
dc.description273-288en_US
dc.description-otheren_US
dc.description.abstractWater samples were collected in the lower Mississippi River and the Gulf of Mexico in April 1999; sites in the river were sampled again in November 1999. Samples were separated into particulate (C-p) and dissolved (C-w) phases using 0.7 mum glass fiber filters. Each phase was analyzed for polycyclic aromatic hydrocarbons (PAHs). Total PAH abundance in river samples was higher in November of 1999 (C-p: 1300-7000 ng gdw(-1); C-w: 77-430 ng l(-1)) than in April 1999 (C-p: 1100-1700 ng gdw(-1), C-w: 12-25 ng l(-1)), despite higher total suspended sediment concentrations in April. Concentration profiles of PAHs in the lower Mississippi River indicate that compositional differences in PAH particle-water distributions were a function of seasonal discharge across the year. For example, higher PAH distribution coefficients in November correspond to a greater degree of combustion-driven processes indicated by black carbon abundance analyzed in the same samples in a complementary study. Concentrations of three specific PAHs isolated in the Mississippi River and the Gulf of Mexico (anthracene, benzo[a]anthracene, and benzo[g,h,i]perylene) were fit into a mass balance model in an attempt to constrain sources of PAHs into the gulf. This portion of the study was based on a limited number of samples. However, these preliminary mass balance calculations indicated that in 1999 on an annual scale, fluvial and atmospheric contributions of PAHs to the Gulf of Mexico were relatively negligible (10(0) kg) and that coastal erosion (10(3) kg) may have been the most significant source of PAHs into the gulf. (C) 2003 Elsevier Science B.V. All rights reserveden_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23417
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notesTimes Cited: 0ArticleEnglishMitra, SSUNY Binghamton, Dept Geol Sci & Environm Studies, POB 6000, Binghamton, NY 13902 USACited References Count: 38716WFPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSAMSTERDAMen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries51065.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectPAHsen_US
dc.subjectMississippi Riveren_US
dc.subjectGulf of Mexicoen_US
dc.subjectblack carbonen_US
dc.subjectPAH mass balanceen_US
dc.subjectcoastal pollutionen_US
dc.subjectDISSOLVED ORGANIC-CARBONen_US
dc.subjectSOUTHERN CHESAPEAKE BAYen_US
dc.subjectPOLYCHLORINATED-BIPHENYLSen_US
dc.subjectGALVESTON BAYen_US
dc.subjectsedimentsen_US
dc.subjectSORPTIONen_US
dc.subjectWATERen_US
dc.subjectADSORPTIONen_US
dc.subjectESTUARYen_US
dc.titleA preliminary assessment of polycyclic aromatic hydrocarbon distributions in the lower Mississippi River and Gulf of Mexicoen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue82(3-4)en_US

Files

Collections

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