基本信息
标准名称: | 工业用异丙苯中纯度及杂质的测定 气相色谱法 |
英文名称: | Cumene (Isopropyl benzene) for industrial use -- Determination of purity and impurities -- Gas chromatographic method |
中标分类: |
化工 >>
有机化工原料 >>
基本有机化工原料 |
ICS分类: |
|
发布部门: | 中华人民共和国国家发展和改革委员会 |
发布日期: | 2004-04-09 |
实施日期: | 2004-09-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
主管部门: | 国家发展和改革委员会 |
提出单位: | 中国石油化工股份有限公司 |
归口单位: | 全国化学标准化技术委员会石油化学分技术委员会(SAC/TC63/SC4) |
起草单位: | 中国石化股份有限公司上海高桥分公司化工事业部 |
起草人: | 吴克勤、陈海东、董建芳 |
出版社: | 中国石油工业出版社 |
出版日期: | 2004-09-01 |
页数: | 7页 |
适用范围
本标准规定了用气相色谱法测定工业用异丙苯的纯度及其杂质含量。
本标准适用于测定工业用异丙苯中常见的杂质,如非芳烃、苯、乙苯、叔丁苯、正丙苯、α-甲基苯乙烯、仲丁苯和二异丙苯等。
前言
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目录
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引用标准
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所属分类: 化工 有机化工原料 基本有机化工原料
【英文标准名称】:StandardPracticeforManualSamplingofLiquidFuels,AssociatedMaterialsandFuelSystemComponentsforMicrobiologicalTesting
【原文标准名称】:对液体燃料,相关材料和燃油系统部件手工取样进行微生物测试的标准实施规程
【标准号】:ASTMD7464-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D02.14
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:bailersampling;bottom-water;componentsampling;coresampling;filtrationmediasampling;fuel;microbiology;samplechainofcustody;samplehandling;samplelabeling;sampling;tapsampling;thiefsampling
【摘要】:Representativesamplesoffuelproductsandassociatedsubstancesarerequiredforthedeterminationofmicrobialcontaminationinfuelsandfuelsystemsinordertoaccuratelyassessthebiodeteriorationriskposedtothefuel,fuel-systemcomponentsorboth.Uncontrolledmicrobialcontaminationcanaffectfuelspecificationpropertiesadversely.AsdiscussedinGuideD6469,microbescancauseavarietyofoperationalproblems,includingfilterpluggingandmicrobiallyinfluencedcorrosion(MIC),thelatterofwhichcausesvalvefailure,tankandpipelinefailure.Thesepracticesformicrobiologicalsamplingdecreasetheriskofcontaminatingsampleswithextraneousmicrobes,therebyincreasingtheprobabilitythattheoriginalmicrobialpopulationinthesampledoesnotchangesignificantlybetweenthetimeofsamplingandthetimeoftesting.Theobjectiveofsamplingformicrobiologicaltestingistoobtainarepresentativesamplethatislikelytoreflectthedegreeandnatureofmicrobialcontaminationinthesystemfromwhichthesampleiscollected.Manual47addressestherationalforanddesignofmicrobialcontaminationprograms.Thephysical,chemicalandmicrobiologicalpropertyteststobeperformedonasamplewilldictatethesamplingprocedures,thesamplequantityrequired,andmanyofthesamplehandlingrequirements.Fuelsystemsarenotnormallydesignedtofacilitateoptimalmicrobiologicalsampling.Consequently,theselectionofsamplingdeviceandsamplesourcereflectcompromisesbetweenaccessibilityandsuitabilityformeetingthesamplecollectionobjective.TheguidanceprovidedinPracticeD4057generallyappliestothispracticeaswell.Consequently,thispracticewilladdressonlythoseproceduresthatapplyuniquelytomicrobiologicalsampling.1.1Thispracticecoversaspectsofsampledevicepreparationandsamplehandlingthatpreventsamplesfrombecomingcontaminatedwithmicroorganismsnotoriginallycontainedwithinthesample.1.2Thispracticealsocoverssamplehandlingconsiderationsthatreflecttheperishabilityofsamplescollectedformicrobiologicaltesting.1.3ThispracticesupplementsPracticeD4057byprovidingguidancespecifictothemanualsamplingoffuelswhensamplesaretobetestedformicrobialcontamination.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:9P.;A4
【正文语种】:英语