adapterssuspended
suspended 时间:2021-01-05 阅读:()
SuspendedSolidsDOC316.
53.
01139PhotometricMethod1Method80065to750mg/LTSSScopeandapplication:Forwaterandwastewater.
1AdaptedfromSewageandIndustrialWastes,31,1159(1959).
TestpreparationInstrument-specificinformationTable1showsalloftheinstrumentsthathavetheprogramforthistest.
Thetablealsoshowssamplecellandorientationrequirementsforreagentadditiontests,suchaspowderpilloworbulkreagenttests.
Tousethetable,selectaninstrument,thenreadacrosstofindtheapplicableinformationforthistest.
Table1Instrument-specificinformationInstrumentSamplecellorientationSamplecellDR6000DR3800DR2800DR2700DR1900Thefilllineistotheright.
2495402DR5000DR3900Thefilllineistowardtheuser.
DR900Theorientationmarkistowardtheuser.
2401906BeforestartingForturbidimetricmethods,installtheinstrumentcaporcoveronallinstrumentsbeforeZEROorREADispushed.
DonotusethePour-ThruCellorsippermodule(forapplicableinstruments)withthistest.
ItemstocollectDescriptionQuantityBeaker,600-mL,polypropylene1Blender1Cylinder,500-mLpolypropylene,graduated1Samplecells(Forinformationaboutsamplecells,adaptersorlightshields,refertoInstrument-specificinformationonpage1.
)2RefertoConsumablesandreplacementitemsonpage3fororderinformation.
1SamplecollectionandstorageCollectsamplesincleanglassorplasticbottles.
Topreservesamplesforlateranalysis,keepthesamplesatorbelow6°C(43°F)forupto7days.
Letthesampletemperatureincreasetoroomtemperaturebeforeanalysis.
PhotometricprocedureStart1.
Startprogram630SuspendedSolids.
Forinformationaboutsamplecells,adaptersorlightshields,refertoInstrument-specificinformationonpage1.
Note:Althoughtheprogramnamecanbedifferentbetweeninstruments,theprogramnumberdoesnotchange.
2.
Blend500mLofsampleinablenderathighspeedforexactlytwominutes.
3.
Pourtheblendedsampleintoa600-mlbeaker.
4.
Preparethesample:Stirthesampleandimmediatelypour10mLoftheblendedsampleintoasamplecell.
5.
Preparetheblank:Fillasecondsamplecellwith10mLoftapwaterordeionizedwater.
6.
Cleantheblanksamplecell.
7.
Inserttheblankintothecellholder.
Zero8.
PushZERO.
Thedisplayshows0mg/LTSS.
2SuspendedSolids,PhotometricMethod(750mg/L)9.
Swirlthepreparedsampletoremoveanygasbubblesanduniformlysuspendanyresidue.
10.
Cleanthepreparedsamplecell.
11.
Insertthepreparedsampleintothecellholder.
Read12.
PushREAD.
Resultsshowinmg/LTSS.
InterferencesSamplesthatabsorbstronglyatthemeasurementwavelength,suchasbluedyes,maygivefalse,high-biasreadings.
Auser-enteredcalibrationisadvisedforthesesamples.
AccuracycheckStandardsolutionmethodCalibrationforthistestisbasedonthegravimetrictechniquewithparallelsewagesamplesfromamunicipalsewageplant.
Formostsamples,thiscalibrationsuppliessatisfactoryresults.
Whenhigheraccuracyisrequired,runparallelspectrophotometricandgravimetricdeterminationswithportionsofthesamesample.
Makethenewcalibrationontheparticularsampleusingagravimetrictechniqueasabasis.
SummaryofmethodThismethodofdeterminingtotalsuspendedsolids(TSS)isasimple,directmeasurementwhichdoesnotrequirethefiltrationorignition/weighingstepsthatgravimetricproceduresdo.
TheUSEPAspecifiesthegravimetricmethodforsolidsdeterminations,whilethismethodisoftenusedforcheckingin-plantprocesses.
Themeasurementwavelengthis810nm(DR1900:800nm)forspectrophotometersor610nmforcolorimeters.
ConsumablesandreplacementitemsRequiredapparatusDescriptionQuantity/testUnitItemno.
Beaker,600-mL,polypropylene1each108052Blender,2-speed,120VACoption1each2616100Blender,2-speed,240VACoption1each2616102Cylinder,graduated,500-mL,polypropylene1each108149SuspendedSolids,PhotometricMethod(750mg/L)3HachCompany/HachLangeGmbH,1989–2014.
Allrightsreserved.
01/2014,Edition9
53.
01139PhotometricMethod1Method80065to750mg/LTSSScopeandapplication:Forwaterandwastewater.
1AdaptedfromSewageandIndustrialWastes,31,1159(1959).
TestpreparationInstrument-specificinformationTable1showsalloftheinstrumentsthathavetheprogramforthistest.
Thetablealsoshowssamplecellandorientationrequirementsforreagentadditiontests,suchaspowderpilloworbulkreagenttests.
Tousethetable,selectaninstrument,thenreadacrosstofindtheapplicableinformationforthistest.
Table1Instrument-specificinformationInstrumentSamplecellorientationSamplecellDR6000DR3800DR2800DR2700DR1900Thefilllineistotheright.
2495402DR5000DR3900Thefilllineistowardtheuser.
DR900Theorientationmarkistowardtheuser.
2401906BeforestartingForturbidimetricmethods,installtheinstrumentcaporcoveronallinstrumentsbeforeZEROorREADispushed.
DonotusethePour-ThruCellorsippermodule(forapplicableinstruments)withthistest.
ItemstocollectDescriptionQuantityBeaker,600-mL,polypropylene1Blender1Cylinder,500-mLpolypropylene,graduated1Samplecells(Forinformationaboutsamplecells,adaptersorlightshields,refertoInstrument-specificinformationonpage1.
)2RefertoConsumablesandreplacementitemsonpage3fororderinformation.
1SamplecollectionandstorageCollectsamplesincleanglassorplasticbottles.
Topreservesamplesforlateranalysis,keepthesamplesatorbelow6°C(43°F)forupto7days.
Letthesampletemperatureincreasetoroomtemperaturebeforeanalysis.
PhotometricprocedureStart1.
Startprogram630SuspendedSolids.
Forinformationaboutsamplecells,adaptersorlightshields,refertoInstrument-specificinformationonpage1.
Note:Althoughtheprogramnamecanbedifferentbetweeninstruments,theprogramnumberdoesnotchange.
2.
Blend500mLofsampleinablenderathighspeedforexactlytwominutes.
3.
Pourtheblendedsampleintoa600-mlbeaker.
4.
Preparethesample:Stirthesampleandimmediatelypour10mLoftheblendedsampleintoasamplecell.
5.
Preparetheblank:Fillasecondsamplecellwith10mLoftapwaterordeionizedwater.
6.
Cleantheblanksamplecell.
7.
Inserttheblankintothecellholder.
Zero8.
PushZERO.
Thedisplayshows0mg/LTSS.
2SuspendedSolids,PhotometricMethod(750mg/L)9.
Swirlthepreparedsampletoremoveanygasbubblesanduniformlysuspendanyresidue.
10.
Cleanthepreparedsamplecell.
11.
Insertthepreparedsampleintothecellholder.
Read12.
PushREAD.
Resultsshowinmg/LTSS.
InterferencesSamplesthatabsorbstronglyatthemeasurementwavelength,suchasbluedyes,maygivefalse,high-biasreadings.
Auser-enteredcalibrationisadvisedforthesesamples.
AccuracycheckStandardsolutionmethodCalibrationforthistestisbasedonthegravimetrictechniquewithparallelsewagesamplesfromamunicipalsewageplant.
Formostsamples,thiscalibrationsuppliessatisfactoryresults.
Whenhigheraccuracyisrequired,runparallelspectrophotometricandgravimetricdeterminationswithportionsofthesamesample.
Makethenewcalibrationontheparticularsampleusingagravimetrictechniqueasabasis.
SummaryofmethodThismethodofdeterminingtotalsuspendedsolids(TSS)isasimple,directmeasurementwhichdoesnotrequirethefiltrationorignition/weighingstepsthatgravimetricproceduresdo.
TheUSEPAspecifiesthegravimetricmethodforsolidsdeterminations,whilethismethodisoftenusedforcheckingin-plantprocesses.
Themeasurementwavelengthis810nm(DR1900:800nm)forspectrophotometersor610nmforcolorimeters.
ConsumablesandreplacementitemsRequiredapparatusDescriptionQuantity/testUnitItemno.
Beaker,600-mL,polypropylene1each108052Blender,2-speed,120VACoption1each2616100Blender,2-speed,240VACoption1each2616102Cylinder,graduated,500-mL,polypropylene1each108149SuspendedSolids,PhotometricMethod(750mg/L)3HachCompany/HachLangeGmbH,1989–2014.
Allrightsreserved.
01/2014,Edition9
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