热门站点| 世界资料网 | 专利资料网 | 世界资料网论坛
收藏本站| 设为首页| 首页

ASTM D1067-2011 测定水酸碱性的标准测试方法

作者:标准资料网 时间:2024-03-29 19:29:09  浏览:8093   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodsforAcidityorAlkalinityofWater
【原文标准名称】:测定水酸碱性的标准测试方法
【标准号】:ASTMD1067-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:D19.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:酸度;强碱性;滴定法;水;水质分析
【英文主题词】:acidity;alkalinity;titrations;water;Wateranalysis
【摘要】:Acidityandalkalinitymeasurementsareusedtoassistinestablishinglevelsofchemicaltreatmenttocontrolscale,corrosion,andotheradversechemicalequilibria.Levelsofacidityoralkalinityarecriticalinestablishingsolubilitiesofsomemetals,toxicityofsomemetals,andthebufferingcapacityofsomewaters.1.1Thesetestmethodscoverthedeterminationofacidityoralkalinityofalltypesofwater.Threetestmethodsaregivenasfollows:
Sections
TestMethodA(ElectrometricTitration)
7to15
TestMethodB(ElectrometricorColor-ChangeTitration)
16to24
TestMethodC(Color-ChangeTitrationAfterHydrogenPeroxideOxidationandBoiling)
25to33
下载地址: 点击此处下载
【英文标准名称】:StandardPracticeforDosimetryforaSelf-ContainedDry-StorageGamma-RayIrradiator
【原文标准名称】:自带干藏γ射线辐射仪剂量测定的标准实施规范
【标准号】:ASTMISO/ASTM52116-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:E10.01
【标准类型】:(ISO/ASTM)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:4.1Self-containeddry-storagegamma-rayirradiatorscontainradioactivesources,namely137Csor60Co,thatemitionizingelectromagneticradiation(gammarays),underproperlyshieldedconditions.Theseirradiatorshaveanenclosed,accessibleirradiatorsamplechamberconnectedwithasamplepositioningsystem,forexample,irradiatordrawer,rotor,orirradiatorturntable,aspartoftheirradiationdevice.4.2Self-containeddry-storagegamma-rayirradiatorscanbeusedformanyradiationprocessingapplications,includingthefollowing:calibrationofdosimeters;dosimeterstudiesforresearch;irradiationsofrelativelysmallsamplesforinducingdesiredradiationeffectsorforradiationprocessvalidationpurposes;irradiationofmaterialsorbiologicalsamplesforprocesscompatibilitystudies;batchirradiationsofmicrobiological,botanical,orin-vitrosamples;irradiationofsmallanimals;radiation"hardness"testingofelectronicscomponentsandothermaterials;andbatchradiationprocessingofrelativelysmallcontainersofsamples,suchasbloodproducts,insectcanisters,prostheticdevices,andpharmaceuticals.NOTE1-Inthecaseofirradiatedhealthcareproducts,pharmaceuticals,foodstuffs,animalsandplants,theassurancethattheyareproperlyirradiatedisofcrucialimportance.Theirradiatoroperatormustdemonstratebymeansofaccurateabsorbeddosemeasurementsinsample,orinsimulatedproduct,thatthespecifiedabsorbeddoseisachieved(seeISO/ASTMGuide51261,ISO/ASTMPractices51204,51400,51702,andISO11137).Formostapplications,theabsorbeddoseisexpressedasabsorbeddoseinwater(seeISO/ASTMGuide51261).Forconversionofabsorbeddoseinwatertothatinothermaterials,forexample,silicon,solid-statedevices,polymers,seeAnnexA1ofISO/ASTMGuide51261.4.3Self-containeddry-storagegamma-rayirradiatorscontainasealedsource,oranarrayofsealedsourcescompletelyheldinadrycontainerconstructedofsolidmaterials.Thesealedsourcesareshieldedatalltimes,andhumanaccesstothechamberundergoingirradiationisnotphysicallypossibleduetodesignconfiguration(seeANSIN433.1).4.4Foreachirradiator,anabsorbed--doserateatareferencepositionwithinthesampleorsampleholderismeasured.Thatmeasurementisusedtocalculatethetimersettingrequiredtodeliverthespecifiedabsorbeddose.Theirradiatormanufacturermayperformreference-standardmeasurementsanddosemappingmeasurementswithintheirradiationchamber.NOTE2-Forreference-standarddosimetry,theabsorbeddoseandabsorbed-doseratecanbeexpressedinwaterorothermaterialwhichhassimilarradiationabsorptionpropertiestothatofthesamplesordosimetersbeingirradiated.Insomecases,thereference-standarddosimetrymaybeperformedusingionizationchambers,andmaybecalibratedintermsofexposure(Ckg?),orabsorbeddoseinair,waterortissue(gray).Measurementsperformedintermsofexposureapplytoionizationinair,andcareshouldbetakentoapplythatmeasurementtothesamplebeingirradiated.4.5Dosimetrycarriedoutwithsuchsourcesmaybepartofameasurementqualityassuranceprogramthatisappliedtoensurethattheradiationprocess,testorcalibrationmeetspredeterminedspecifications(1).94.6Absorbed-dosemappingforestablishingthelocationsofminimum(Dmin)andmaximum(Dmax)dosesusuallyisperformedusingthesampleorsimulatedproduct(see9.3).1.1Thispracticeoutlinesdosimetricprocedurestobefollowedwithself-containeddry-storagegamma-rayirradiators.Iffollowed,theseprocedureswillhelptoensurethatcalibrationandtestingwillbecarriedoutwithacceptableprecisionandaccuracyandthatthesamplesprocessedwithionizingradiationfromgammaraysinaself-containeddry-storageirradiatorreceiveabsorbe......
【中国标准分类号】:
【国际标准分类号】:
【页数】:13P.;A4
【正文语种】:英语


【英文标准名称】:Chemicaltestsforrawandvulcanizedrubber-Samplepreparation-Vulcanizedrubber
【原文标准名称】:生橡胶和硫化橡胶的化学试验.第2部分:试样制备.第2节:硫化橡胶
【标准号】:BS7164-2.2-1990
【标准状态】:现行
【国别】:英国
【发布日期】:1990-10-31
【实施或试行日期】:1990-10-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:硬化材料;试样制备;硬橡胶;复合材料;化学分析和试验;硫化橡胶;合成橡胶;天然橡胶
【英文主题词】:Chemicalanalysisandtesting;Rubber;Specimenpreparation;Testspecimens;Vulcanizedrubber
【摘要】:ThispartofISO4661specifiesamethodofpreparingsamplesfromvulcanizedrubberforuseinchemicaltests.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:8P;A4
【正文语种】:英语



版权声明:所有资料均为作者提供或网友推荐收集整理而来,仅供爱好者学习和研究使用,版权归原作者所有。
如本站内容有侵犯您的合法权益,请和我们取得联系,我们将立即改正或删除。
京ICP备14017250号-1