Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/68793
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dc.contributor.authorTowey, T.P.en_US
dc.contributor.authorChang, S.C.en_US
dc.contributor.authorDemond, A.en_US
dc.contributor.authorWright, D.en_US
dc.contributor.authorBarabas, N.en_US
dc.contributor.authorFranzblau, A.en_US
dc.contributor.authorGarabrant, D.H.en_US
dc.contributor.authorGillespie, B.W.en_US
dc.contributor.authorLepkowski, J.en_US
dc.contributor.authorLuksemburg, W.en_US
dc.contributor.authorAdriaens, P.en_US
dc.date2010zh_TW
dc.date.accessioned2014-06-11T05:57:20Z-
dc.date.available2014-06-11T05:57:20Z-
dc.identifier.issn0730-7268zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/68793-
dc.description.abstractAs part of the University of Michigan Dioxin Exposure Study, soil samples were collected from 766 residential properties near the Tittabawassee River between Midland and Saginaw; near the Dow Chemical Facility in Midland; and, for comparison, in the other areas of Midland and Saginaw Counties and in Jackson and Calhoun Counties, all located in the state of Michigan, USA. A total of 2,081 soil samples were analyzed for 17 polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). In order to better understand the distribution and sources of the PCDD/F congeners in the study area, hierarchical cluster analysis (HCA) was used to statistically group samples with similar congener patterns. The analysis yielded a total of 13 clusters, including: 3 clusters among the soils impacted by contamination present in the Tittabawassee River sediments, a cluster comprised mainly of samples collected within the depositional area of the Dow incinerator complex, a small cluster of samples with elevated 2,3,7,8-tetrachlorinated dibenzo-p-dioxin (TCDD), and several clusters exhibiting background patterns. The clusters related to the Tittabawassee River floodplain contamination all contained elevated PCDF levels and were differentiated from one another primarily by their relative concentrations of higher-chlorinated PCDDs, a difference likely related to both extent and timing of impacts from Tittabawassee sediments. The background clusters appear to be related to combustion processes and are differentiated, in part, by their relative fractions of TCDD. Thus, HCA was useful for identifying congener profile characteristics in both contaminated and background soil samples. Environ. Toxicol. Chem. 2010;29:64-72. (C) 2009 SETACen_US
dc.language.isoen_USzh_TW
dc.relationEnvironmental Toxicology and Chemistryen_US
dc.relation.ispartofseriesEnvironmental Toxicology and Chemistry, Volume 29, Issue 1, Page(s) 64-72.en_US
dc.relation.urihttp://dx.doi.org/10.1002/etc.24en_US
dc.subjectPolychlorinated dibenzo-p-dioxinsen_US
dc.subjectPolychlorinated dibenzofuransen_US
dc.subjectCluster analysisen_US
dc.subjectMultivariate statisticsen_US
dc.subjectTittabawassee Riveren_US
dc.subjectmultivariate statistical-methodsen_US
dc.subjectdibenzo-p-dioxinsen_US
dc.subjectsedimentsen_US
dc.subjectriveren_US
dc.subjectsamplesen_US
dc.titleHIERARCHICAL CLUSTER ANALYSIS OF POLYCHLORINATED DIOXINS AND FURANS IN MICHIGAN, USA, SOILS: EVALUATION OF INDUSTRIAL AND BACKGROUND CONGENER PROFILESen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1002/etc.24zh_TW
item.languageiso639-1en_US-
item.grantfulltextnone-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.openairetypeJournal Article-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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