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《The trace element geochemistry of marine biogenic particulate matter》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、Prog.Oceanog.Vol.13,pp.113-199,1984.0079-6611/84$0.00+.50PrintedinGreatBritain.Allrightsreserved.Copyright~<1984PergamonPressLtd.TheTraceElementGeochemistryofMarineBiogenicParticulateMatterROBERTCOLLIER*andJOHNEDMONDt*CollegeofOceanography,OregonStateUniversity,Corvallis,OR97331,U.S.A.tDepart
2、mentofEarthandPlanetarySciences,MassachusettsInstituteofTechnology,Cambridge,MA02319,U.S.A.ABSTRACT-Planktonsampleshavebeencarefullycollectedfromavarietyofmarineenvironmentsformajorandtrace-chemicalanalysis.Thesampleswerecollectedandhandledundertherigorousconditionsnecessarytopreventcon-tamin
3、ationofthetraceelements.Immediatelyaftercollection,thesamplesweresubjectedtoaseriesofphysicalandchemicalleachlng-decompositlonexperimentsdesignedtoidentifythemajorandtraceelementcompositionofthebiogenlcparticulatematter.Emphasiswasplacedonthedeterminationofthetraceelement/majorelementratiosin
4、thevariousblogenicphasesimportantinblogeochemicalcycling.Themajorityofthetraceelementsinthesamplesweredirectlyassociatedwiththenon-skeletalorganicphasesoftheplankton.Theseassociationsincludeaverylabilefractionwhichwasrapidlyreleasedintoseawaterimmedi-atelyaftercollectionandamorerefractorycomp
5、onentwhichinvolvedspecificmetal-organicbinding.Calciumcarbonateandopalwerenotsignificantcarriersforanyofthetraceelementsstudied.Arefractoryphasecontainingaluminumandironinterrlgenousratioswaspresentinallsamples,evenfromremotepelagicenvironments.Thisnon-biogeniccarriercontributedinsignificanta
6、mountstotheothertraceelementsstudied.Theplanktonsampleswerecollectedfromsurfacewaterswithawiderangeinthedissolvedtraceelement/nutrlentratios,however,thesameelementalratiosinthebulkplanktonsampleswererelativelyconstantinalltheseenvi-ronments.Thebulkcompositionsandtherapidreleaseofthemetalsandn
7、utri-entelements(specificallyphosphorus)fromtheplanktonaftercollectionwereusedtoexaminethesystematicsofdepletionsofthedissolvedelementsfromsurfacewaters.Theseelementalratioswerecombinedwithknownfluxesofthemajorblogenlcmaterialstoestimatethesi
