ASTM D5391-1999(2009) 高纯度流动水样品电导性和电阻率的标准试验方法
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【英文标准名称】:StandardTestMethodforElectricalConductivityandResistivityofaFlowingHighPurityWaterSample
【原文标准名称】:高纯度流动水样品电导性和电阻率的标准试验方法
【标准号】:ASTMD5391-1999(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cation;conductivity;highpuritywatermeasurements;resistivity;specificconductance;specificresistance;Conductanceandconductivity(electrical)--water;Contamination--water;High-puritywater;Instrumentalmeasurement--water;Ioniccontaminatio
【摘要】:Conductivitymeasurementsaretypicallymadeonsamplesofmoderatetohighionicstrengthwherecontaminationofopensamplesinroutinelaboratoryhandlingisnegligible.Underthoseconditions,standardtemperaturecompensationusingcoefficientsof1to3%ofreadingperdegreeCelsiusoverwideconcentrationrangesisappropriate.Incontrast,thistestmethodrequiresspecialconsiderationstoreducetracecontaminationandaccommodatesthehighandvariabletemperaturecoefficientsofpurewatersamplesthatcanrangeashighas7%ofreadingperdegreeCelsius.Inaddition,measuringinstrumentdesignperformancemustbeprovenunderhighpurityconditions.Thistestmethodisapplicablefordetectingtraceamountsofioniccontaminantsinwater.Itistheprimarymeansofmonitoringtheperformanceofdemineralizationandotherhighpuritywatertreatmentoperations.Itisalsousedtodetectioniccontaminationinboilerwaters,microelectronicsrinsewaters,pharmaceuticalprocesswaters,etc.,aswellastomonitorandcontrolthelevelofboilerandpowerplantcyclechemistrytreatmentchemicals.ThistestmethodsupplementsthebasicmeasurementrequirementsforTestMethodsD1125,D2186,andD4519.Atverylowlevelsofalkalinecontamination,forexample,0x2013;1x03BC;g/LNaOH,conductivityissuppressed,andcanactuallybeslightlybelowthetheoreticalvalueforpurewater.(13,14)Alkalinematerialssuppressthehighlyconductivehydrogenionconcentrationwhilereplacingitwithlessconductivesodiumandhydroxideions.Thisphenomenonisnotaninterferencewithconductivityorresistivitymeasurementitselfbutcouldgivemisleadingindicationsofinferredwaterpurityinthisrangeifitisnotrecognized.1.1Thistestmethodcoversthedeterminationofelectricalconductivityandresistivityofhighpuritywatersamplesbelow10x03BC;S/cm(above0.1Mohm-cm).Itisapplicabletobothcontinuousandperiodicmeasurementsbutinallcases,thewatermustbeflowinginordertoproviderepresentativesampling.Staticgrabsamplingcannotbeusedforsuchhighpuritywater.Continuousmeasurementsaremadedirectlyinpurewaterprocesslines,orinsidestreamsamplelinestoenablemeasurementsonhightemperatureorhighpressuresamples,orboth.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:13_060_60
【页数】:7P.;A4
【正文语种】:英语
【原文标准名称】:高纯度流动水样品电导性和电阻率的标准试验方法
【标准号】:ASTMD5391-1999(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cation;conductivity;highpuritywatermeasurements;resistivity;specificconductance;specificresistance;Conductanceandconductivity(electrical)--water;Contamination--water;High-puritywater;Instrumentalmeasurement--water;Ioniccontaminatio
【摘要】:Conductivitymeasurementsaretypicallymadeonsamplesofmoderatetohighionicstrengthwherecontaminationofopensamplesinroutinelaboratoryhandlingisnegligible.Underthoseconditions,standardtemperaturecompensationusingcoefficientsof1to3%ofreadingperdegreeCelsiusoverwideconcentrationrangesisappropriate.Incontrast,thistestmethodrequiresspecialconsiderationstoreducetracecontaminationandaccommodatesthehighandvariabletemperaturecoefficientsofpurewatersamplesthatcanrangeashighas7%ofreadingperdegreeCelsius.Inaddition,measuringinstrumentdesignperformancemustbeprovenunderhighpurityconditions.Thistestmethodisapplicablefordetectingtraceamountsofioniccontaminantsinwater.Itistheprimarymeansofmonitoringtheperformanceofdemineralizationandotherhighpuritywatertreatmentoperations.Itisalsousedtodetectioniccontaminationinboilerwaters,microelectronicsrinsewaters,pharmaceuticalprocesswaters,etc.,aswellastomonitorandcontrolthelevelofboilerandpowerplantcyclechemistrytreatmentchemicals.ThistestmethodsupplementsthebasicmeasurementrequirementsforTestMethodsD1125,D2186,andD4519.Atverylowlevelsofalkalinecontamination,forexample,0x2013;1x03BC;g/LNaOH,conductivityissuppressed,andcanactuallybeslightlybelowthetheoreticalvalueforpurewater.(13,14)Alkalinematerialssuppressthehighlyconductivehydrogenionconcentrationwhilereplacingitwithlessconductivesodiumandhydroxideions.Thisphenomenonisnotaninterferencewithconductivityorresistivitymeasurementitselfbutcouldgivemisleadingindicationsofinferredwaterpurityinthisrangeifitisnotrecognized.1.1Thistestmethodcoversthedeterminationofelectricalconductivityandresistivityofhighpuritywatersamplesbelow10x03BC;S/cm(above0.1Mohm-cm).Itisapplicabletobothcontinuousandperiodicmeasurementsbutinallcases,thewatermustbeflowinginordertoproviderepresentativesampling.Staticgrabsamplingcannotbeusedforsuchhighpuritywater.Continuousmeasurementsaremadedirectlyinpurewaterprocesslines,orinsidestreamsamplelinestoenablemeasurementsonhightemperatureorhighpressuresamples,orboth.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:13_060_60
【页数】:7P.;A4
【正文语种】:英语
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