DIN EN 303 T.2-1992 采暖锅炉.带鼓风机喷嘴的采暖锅炉.第2部分:对带油雾化喷嘴的采暖锅炉的特殊要求

上一篇: DIN EN 303 T.1-1992 采暖锅炉.带鼓风机喷嘴的采暖锅炉.第1部分:概念.一般要求.检验和标识
下一篇: DIN 6814 T.10-1992 放射技术的概念和名称.含有放射性核素的闪烁扫描术

标准名称：	进出口植物源性食品中取代脲类农药残留量的测定 液相色谱-质谱/质谱法
英文名称：	Determination of substituted ureas pesticides residues in foodstuffs of plant origin for import and export—LC-MS/MS method
发布部门：	国家质量监督检验检疫总局
发布日期：	2008-11-18
实施日期：	2009-06-01
首发日期：
作废日期：
主管部门：	国家认证认可监督管理委员会
提出单位：	国家认证认可监督管理委员会
归口单位：	国家认证认可监督管理委员会
起草单位：	中华人民共和国深圳出入境检验检疫局
起草人：	沈金灿、康海宁、谢丽琪、张建莹、叶刚
出版社：	中国标准出版社
出版日期：	2009-06-01
页数：	24页

本标准规定了玉米、大豆、橙子、大米和大白菜中非草隆、甲氧隆、灭草隆、绿麦隆、甲基苯噻隆、伏草隆、敌草隆、环秀隆、异丙隆、异草完隆、环草隆、炔草隆、利谷隆、枯莠隆和枯草隆残留量的液相色谱-质谱/质谱测定方法。
本标准适用于玉米、大豆、橙子、大米和大白菜中非草隆、甲氧隆、灭草隆、绿麦隆、甲基苯噻隆、伏草隆、敌草隆、环秀隆、异丙隆、异草完隆、环草隆、炔草隆、利谷隆、枯莠隆和枯草隆残留量的确证和定量测定。

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【英文标准名称】:StandardPracticeforPreparingCoalSamplesforAnalysis
【原文标准名称】:分析用煤样品的标准制备方法
【标准号】:ASTMD2013/D2013M-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D05.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:煤
【英文主题词】:coal;composite;division;reduction;Coalsamplingsystems
【摘要】:Otherstandardsareusedtocollectthegrosssample:PracticeD2234/D2234Mallowsforonedivisionofthegrosssamplebeforecrushing.Themassandtopsizeofthegrossordividedsamplecollectedbyusingtheseguidesandpracticesareusuallytoolargeforchemicalorphysicaltesting.PracticeD2013provideinstructionsforreducinganddividingthegrossordividedsample,byon-lineoroff-lineprocesses,orboth,toatopsizeandmasssuitabletotheperformanceoftesting.Anybiasinthegrossordividedsamplebeforeadherencetothispracticewillremaininthefinalsampleresultingfromuseofthispractice.Therefore,carefullyselectthestandardtobeusedtocollectthegrosssample.Divisionandreductionofasamplemayoccuratmorethanonelocation.Mostoften,thesampleiscollected,reduced,anddivided(oneormoretimes)byuseofamechanicalsamplingsystem.Theremainingsamplemaybefurtherdividedon-sitetofacilitatetransportingittothelaboratorywherefurtherreductionanddivisionlikelyoccursbeforeanalysis.Inplaces,thispracticerequiresairdryingthesamplebeforesubsequentreduction.Proceduresforairdryingandair-drylossdeterminationareprovidedinTestMethodD3302.Mostoften,samplesarereducedanddividedtoananalysissample.However,sometestsmayrequireasampleofdifferentmassortopsize.Thisproceduremaybeusedtoprovideasampleofanymassandsizeconsistfromthegrossordividedsampleto,andincluding,theanalysissample.Thispracticealsospecifieshowtopreparecompositesamples,ifrequired.1.1Thispracticecoversthereductionanddivisionofgrossordividedsamples,andthepreparationofcompositesamples,uptoandincludingtheindividualportionsforlaboratoryanalysis.1.2Reductionanddivisionproceduresareprescribedforcoalsofthefollowinggroups:1.2.1GroupAincludescoalsthathavebeencleanedinallsizes.1.2.2GroupBincludesallothercoals.UnknowncoalsaretobeconsideredunderGroupB.1.2.3GroupAallowssmallerweightlaboratorysamplestoberetainedthanGroupB.Theselowerweightsmaybeusedforparticularcoalsiftheyhavebeenshown,byusingtheproceduresofAnnexA1.2,togiveasamplepreparationandanalysisvariancewhichisnomorethan20%ofthetotalanalysisvariance.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.A1.1.1Thismethodcoversproceduresforcheckingprecisionofsamplepreparationandanalysisofthevariousstages.Thedataobtainedfromtestsusingconsistentsamplepreparationandanalysismethodareusedtoestimatetherandomerrorsinthevariousstagesofsampledivisionandanalysis.A1.......
【中国标准分类号】:D21
【国际标准分类号】:73_040
【页数】:11P.;A4
【正文语种】:英语