EN ISO 8968-5-2001 牛奶.氮含量测定.第5部分:蛋白质的氮含量测定
时间:2024-05-18 13:20:22 来源: 标准资料网 作者：标准资料网 阅读：9585
【英文标准名称】:Milk-Determinationofnitrogencontent-Part5:Determinationofprotein-nitrogencontent(ISO8968-5:2001);GermanversionENISO8968-5:2001
【原文标准名称】:牛奶.氮含量测定.第5部分:蛋白质的氮含量测定
【标准号】:ENISO8968-5-2001
【标准状态】:现行
【国别】:
【发布日期】:2002-06
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:滴定法;质量浓度;含量;窒塞量;牛奶;食品;食品检验;基耶达尔;氮;过滤;奶制品;空白样品;试验;含量测定;分析;实验室试验;蛋白质含量;分段法;原蛋白质;食品产品;乳制品分析;定义;抽样方法;数学计算;化学分析和试验
【英文主题词】:Analysis;Blanksamples;Blindvalue;Chemicalanalysisandtesting;Content;Crudeproteins;Dairyanalysis;Definition;Definitions;Determinationofcontent;Digestionmethod;Filtration;Foodinspection;Foodproducts;Foodstuff;Kjeldahl;Laboratorytests;Massconcentration;Mathematicalcalculations;Milk;Milkproducts;Nitrogen;Proteincontent;Samplingmethods;Testing;Titration
【摘要】:
【中国标准分类号】:X16
【国际标准分类号】:67_100_10
【页数】:12P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforUraniuminPresenceofPlutoniumbyIron(II)ReductioninPhosphoricAcidFollowedbyChromium(VI)Titration
【原文标准名称】:在有钚存在的情况下经铬(VI)滴定后用磷酸中铁(II)量减少法测定铀的试验方法
【标准号】:ASTMC1204-2002(2008)e1
【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】:C26.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:chromiumtitration;DaviesandGraytitration;mixedoxide(MOX);modifiedDaviesandGraytitration;uranium;uraniuminplutonium;Titration;Uranium;Uraniuminplutonium;Chromiumtitrationofuranium;DaviesandGraytitration;Mixedoxides(MOX)
【摘要】:Factorsgoverningselectionofamethodforthedeterminationofuraniumincludeavailablequantityofsample,samplepurity,desiredlevelofreliability,andequipmentavailability.Thistestmethodissuitableforsamplesbetween20to300mgofuranium,isapplicabletofastbreederreactor(FBR)-mixedoxideshavingauraniumtoplutoniumratioof2.5andgreater,istoleranttowardsmostmetallicimpurityelementsusuallyspecifiedforFBR-mixedoxidefuel,andusesnospecialequipment.Theruggednessofthetitrationmethodhasbeenstudiedforboththevolumetric(6)andtheweight(7)titrationofuraniumwithdichromate.1.1Thistestmethodcoversunirradiateduranium-plutoniummixedoxidehavingauraniumtoplutoniumratioof2.5andgreater.Thepresenceoflargeramountsofplutonium(Pu)thatgiveloweruraniumtoplutoniumratiosmaygivelowanalysisresultsforuranium(U)(1),iftheamountofplutoniumtogetherwiththeuraniumissufficienttoslowthereductionstepandpreventcompletereductionoftheuraniumintheallottedtime.Useofthistestmethodforloweruraniumtoplutoniumratiosmaybepossible,especiallywhen20to50mgquantitiesofuraniumarebeingtitratedratherthanthe100to300mginthestudycitedinRef(1).Confirmationofthatinformationshouldbeobtainedbeforethistestmethodisusedforratiosofuraniumtoplutoniumlessthan2.5.1.2TheamountofuraniumdeterminedinthedatapresentedinSection12was20to50mg.However,thistestmethod,asstated,containsironinexcessofthatneededtoreducethecombinedquantitiesofuraniumandplutoniuminasolutioncontaining300mgofuraniumwithuraniumtoplutoniumratiosgreaterthanorequalto2.5.Solutionscontainingupto300mguraniumwithuraniumtoplutoniumratiosgreaterthanorequalto2.5havebeenanalyzed(1)usingthereagentvolumesandconditionsasdescribedinSection10.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection8.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:9P.;A4
【正文语种】:英语
【英文标准名称】:Durabilityofwoodandwood-basedproducts-Performanceofpreservativesasdeterminedbybiologicaltests-Specificationaccordingtohazardclass
【原文标准名称】:木材和木制产品的耐久性.用生物试验测定木材防腐剂的性能.第1部分:按危险等级分类规范
【标准号】:BSEN599-1-1997
【标准状态】:作废
【国别】:英国
【发布日期】:1997-04-15
【实施或试行日期】:1997-04-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:防腐剂;分类系统;木材防腐剂;试验条件;木材防腐;生物分析和试验;质量控制;等级(质量);危害;老化试验;定型试验;耐久性;性能;液体;性能试验
【英文主题词】:Ageing(materials);Bioassay;Biodegradability;Biological;Biologicalanalysisandtesting;Biologicalhazards;Biologicaltests;Classificationsystems;Coordination;Definitions;Durability;Effectiveness;Efficiency;Features;Fitnessforpurpose;Furniture;Hazardclasses;Hazards;Marking;Materialstesting;Minimumquantity;Permanency;Pestcontrol;Solidwood;Specification;Specification(approval);Surveillance(approval);Testing;Wood;Woodbasedproducts;Woodpreservation;Woodpreservatives
【摘要】:ThisPartofEN599specifiesforeachofthefivehazardclassesdefinedinEN335-1,theminimumperformancerequirementsforwoodpreservativesforthepreventivetreatmentofsolidtimberagainstbiologicaldeterioration.Itspecifiesthebiologicaltestswiththeminimumageingtestsrequiredaccordingtothehazardclass,togetherwiththeperformancecriteriatobeachievedineachtest.ThisPartofEN599isapplicabletoallwoodpreservativeproductssuppliedforapplicationinliquidformforthepreventivetreatmentoftimbers(structuralandnon-structural)againstwood-attackingfungi,wood-attackinginsectsandmarineborersasdescribedinHD1001andEN335-1.Howeveritisonlyapplicabletoproductsforpreventivetreatmentsagainstfungicausingdisfigurement(bluestain)ofwoodinserviceifthisformspartoftheoverallpreventiveeffectivenessoftheproduct.ThisPartofEN599isnotapplicabletowoodpreservativeproductssuppliedforapplicationaspastes,solidsorincapsuleformbecausetheycannotbetestedwithoutmodificationofthebiologicaltestsdemandedinthisstandard.Itdoesnotapplyeithertowoodpreservativeproductsforremedial(curative)treatments,tothoseappliedtopreventfungicausingsapstainongreen(unseasoned)timberortothoseappliedsolelytopreventfungicausingdisfigurement(bluestain)ofwoodinservice.NOTE1.ThenatureofthelaboratoryandfieldtestsrequiredinthisPartofEN599todemonstrateperformanceofawoodpreservativearesuchthatthetimerequiredtogeneratethedataismanymonthsoryears,dependinguponthepropertiesofthewoodpreservativeandthehazardclassinwhichthetreatedwoodistobeexposed.Therefore,atthedateofpublicationofthisPartofEN599,formanyproductscoveredunderitsscopealreadyplacedonthemarketandusedlawfullyinaccordancewithlocaltechnicaltraditions,theminimumdataspecifiedinthisPartofEN599maynotbeavailable.Accordingly,foraperiodnotexceedingsixyearsfromthedateofpublicationofthisPartofEN599,nationalstandardsorganizations,oranorganizationnominatedbythemmaydeclareinterimcriticalvaluesforusewithintheirterritories,toapplytoproductsalreadyplacedonthemarketandusedlawfullyinaccordancewithlocaltraditionsatthedateofpublicationofthisPartofEN599.NOTE2.Forre-testingaftermakingvariationsinproductformulation,guidanceisgiveninannexA.
【中国标准分类号】:B71
【国际标准分类号】:71_100_50
【页数】:28P.;A4
【正文语种】:英语