科学计算_Wolf River Pollution(沃尔夫河污染数据)-第一文库 | 海量文档资源下载与分享平台

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WolfRiverPollution(沃尔夫河污染数据)数据摘要：Jaffe,ParkerandWilsonhaveinvestigatedtheconcentrationofseveralhydrophobicorganicsubstances(suchashexachlorobenzene,chlordane,heptachlor,aldrin,dieldrin,endrin)intheWolfRiverinTennessee.Measurementsweretakendownstreamofanabandoneddumpsitethathadpreviouslybeenusedbythepesticideindustrytodisposeofitswasteproducts.Itwasexpectedthatthesehydrophicsubstancesmighthaveanonhomogeneousverticaldistributionintheriverbecauseofdifferencesindensitybetweenthesecompoundsandwaterandbecauseoftheadsorptionofthesecompoundsonsediments,whichcouldleadtohigherconcentrationsonthebottom.Itisimportanttocheckthishypothesisbecausethestandardprocedureofsamplingatsix-tenthsofthedepthcouldmissthebulkofthesepollutantsifthedistributionwerenotuniform.GrabsamplesweretakenwithaLaMotte-Vandornwatersamplerof1litrecapacityatvariousdepthsoftheriver.Thissamplerconsistsofahorizontalplexiglastubeof7centimetresdiameterandaplungerofeachsidewhichshutsthesamplerwhenthesamplerisatthedesireddepth.Tensurface,10mid-depthand10bottomsampleswerecollected,allwithinarelativelyshortperiod.Untiltheywereanalysedthesampleswerestoredin1-quartmasonjarsatlowtemperature.Intheanalysisofthesamples,a250-millilitrewatersamplewastakenfromeachmasonjarandwasextractedwith1millilitreofeitherhexanesorpetroleumether.Asampleoftheextractwastheninjectedintoagaschromatographandtheoutputwascomparedagainststandardsofknownconcentrations.Thetestprocedurewasrepeatedtwomoretimes,injectingdifferentsamplesoftheextractinthegaschromatograph.Theaveragealdrinandhexachlorobenzene(HCB)concentrations(innanogramsperliter)inthese30samplesaregiveninthedata.中文关键词：相关,单因子方差分析,异常值,沃尔夫河,污染,英文关键词：correlation,one-wayanalysisofvariance,outliers,Wolfriver,pollution,数据格式：TEXT数据用途：Itcanbeusedforstatistics.数据详细介绍：WolfRiverPollutionKeywords:correlation,one-wayanalysisofvariance,outliers,analysisofcovarianceDescriptionJaffe,ParkerandWi