瑶湖沉积物赋存形态特征与其沉积物-水界面氮磷吸附释放行为的分析

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1、AbstractTheResearchontheExistingFormsofSedimentsandSediment-waterInterfaceintheProcessofNitrogenandPhosphorusAdsorption-releaseoftheYaohuLakeAbstractOnthebasisofresearchaboutexternalpollutionofYaohuLakebypredecessors,thispaperhadcarriedonthedetaileddiscussiontoendogen

2、ouspollutioncharacteristicsofYaoHu.Firstofall,nitrogenandphosphorusexistingformsanditsspatialdistributioncharacteristicinsedimentswerestudied,andthedistributionofthemainphysicalandchemicalpropertiesinsedimentwasanalyzed.Secondly,theprocessofnitrogenadsorptionandreleas

3、ingontheinterfacebetweensedimentsandwaterwasanalyzed;andthemodelsofnitrogenadsorptiondynamics,theadsorptionisotherm,releasekinetics,andquantitativecalculationoftheammonianitrogenreleasepotentialinsedimentswereestablished;thecharacteristicsofammonianitrogenadsorptionwi

4、thgrainsizeofsedimentswasstudied.Thirdly,theprocessofphosphorusadsorptionofsedimentsandwaterinterfacewerestudied;themodelsofphosphorusadsorptiondynamics,andtheadsorptionisotherminsedimentswereestablished;theinfluenceofphosphorusreleasingwithpHandtemperaturewasdiscusse

5、d.Finally,undertheconditionofindoorsimulationlakeenvironment,theinfluenceofsedimentnitrogenandphosphorusreleasingwithpHandwinddisturbancewerestudied.Researchresultswouldprovidetheoreticalbasisforquantitativeanalysisoftheinfluenceofnitrogenandphosphorusformsofsediments

6、oneutrophicationconditionofYaohuLake,whichhadimportantpracticalandtheoreticalsignificanceforinternalmanagementandpreventionofeutrophication.Themainresultswereasfollows:(1)Theresultsofphosphorusanalysismethodforselectingshowedthattherelativeerroroftwokindsofanalysismet

7、hodfordeterminationofTPwasin30%(relativetothemeasuredvalueofHGF).ThepercentageoftheaveragecontentofFe-PandFe/Al-PtoTPwere50.15%and48.25%,andtherelativeerrorofaveragecontentofFe/Al-PandthesumofAl-PandFe-Pwasin25%(comparedwiththesumofFe-PandAl-PbymethodofHGF).Theresults

8、ofCa-Pdeterminationwereroughlydoubled.ThisarticleselectedtheHGFofanalysingtheexistingformsanditsspatialdistributioncharacter