【英文标准名称】:Firehazardtesting-Part2:testmethods-Section1/sheet3:glow-wireignitabilitytestonmaterials.
【原文标准名称】:火焰危害试验.第2部分:试验方法.第1部分/第3章:白热线材料上的可燃试验
【标准号】:NFC20-921-3-2001
【标准状态】:作废
【国别】:法国
【发布日期】:2001-02-01
【实施或试行日期】:2001-02-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:C80
【国际标准分类号】:13_220_40
【页数】:11P;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodsforChemicalOxygenDemand(DichromateOxygenDemand)ofWater
【原文标准名称】:水的化学氧需要量(重铬酸盐氧需要量)的标准试验方法
【标准号】:ASTMD1252-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D19.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:需求;重铬酸盐;氧;试验;水
【英文主题词】:chemicaloxygendemand;COD;demand;oxygendemand
【摘要】:Thesetestmethodsareusedtochemicallydeterminethemaximumquantityofoxygenthatcouldbeconsumedbybiologicalornaturalchemicalprocessesduetoimpuritiesinwater.Typicallythismeasurementisusedtomonitorandcontroloxygen-consumingpollutants,bothinorganicandorganic,indomesticandindustrialwastewaters.TherelationshipofCODtootherwaterqualityparameterssuchasTOCandTODisdescribedintheliterature.31.1Thesetestmethodscoverthedeterminationofthequantityofoxygenthatcertainimpuritiesinwaterwillconsume,basedonthereductionofadichromatesolutionunderspecifiedconditions.Thefollowingtestmethodsareincluded:Equation1-TestMethodA-MacroCODbyRefluxDigestionandTitrationEquation2-TestMethodB-MicroCODbySealedDigestionandSpectrometry1.2Thesetestmethodsarelimitedbythereagentsemployedtoamaximumchemicaloxygendemand(COD)of800mg/L.SampleswithhigherCODconcentrationsmaybeprocessedbyappropriatedilutionofthesample.Modifiedproceduresineachtestmethod(Section15forTestMethodAandSection24forTestMethodB)maybeusedforwatersoflowCODcontent(50mg/L).1.3Asageneralrule,CODresultsarenotaccurateifthesamplecontainsmorethan1000mg/LCl.Consequently,thesetestmethodsshouldnotbeappliedtosamplessuchasseawatersandbrinesunlessthesamplesarepretreatedasdescribedinAppendixX1.1.4Thistestmethodwasusedsuccessfullyonastandardmadeupinreagentwater.Itistheuser''sresponsibilitytoensurethevalidityofthesetestmethodsforwatersofuntestedmatrices.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSections8,15.6,and24.5.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:12P.;A4
【正文语种】: