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关于定量监测悬浮泥沙浓度方法的回顾和展望(英文).docx

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关于定量监测悬浮泥沙浓度方法的回顾和展望(英文) AReviewandProspectofMethodsforQuantitativeMonitoringofSuspendedSedimentConcentration Abstract Suspendedsedimentconcentration(SSC)isanimportantindicatorofwaterqualityandwaterenvironmentchanges.MeasuringSSCisfoundationalforunderstandingsuspendedsedimenttransportinrivers,lakes,andcoastalwaters.Inthispaper,wereviewandevaluatethedifferentmethodsformeasuringSSC,includingtraditionalmethodssuchasgravimetricandturbidimetricmethods,aswellasmodernmethodssuchasopticalinstrumentsandacousticdevices.Theadvantagesanddisadvantagesofeachmethodarediscussed,andfuturedevelopmentprospectsareproposed. Introduction Suspendedsedimentconcentration(SSC)isthequantityofsuspendedsedimentinthewatercolumnandisusuallydeterminedasmasspervolume(i.e.,mg/Lorg/m^3).SSCisanimportantparameterforunderstandingsedimenttransportprocessesinrivers,lakes,estuaries,andcoastalareas.ThemeasurementofSSCisafundamentaltaskinsedimentandwaterqualitymonitoringandresearch.TraditionalmeasurementmethodsforSSCarebasedongravimetricandturbidimetricmethods,whichcanprovidepreciseandreliableresultsbymeasuringindividualsamples.However,thesemethodsaretime-consuming,labor-intensive,andrequireskilledtechnicians.Therefore,modernmethods,whichareefficient,real-time,andnon-destructive,havebeendeveloped.ThepurposeofthispaperistoreviewandevaluatetraditionalandmodernmethodsformeasuringSSCandtheiradvantagesanddisadvantages. TraditionalMethods 1.GravimetricMethod GravimetricmethodisthemostcommonandaccuratemethodformeasuringSSC.Thismethodisbasedontheseparationanddryingofsuspendedsedimentfromaknownvolumeofwatersample,andtheweightofthesuspendedsedimentisdeterminedbythedifferencebetweenthepre-andpost-dryingweightofthefilterpaper.TheSSCisthencalculatedbydividingthemassofsedimentbythevolumeofwater. Advantages: -Highaccuracyandrepeatability -Independentofsamplecolorandturbidity -SuitableformeasuringawiderangeofSSC Disadvantages: -Time-consumingandlabor-intensive -Thefiltermayabsorborganicmatter,reducingtheaccuracyofthemeasur