SAE AMS7478 Bolts and Screws, Steel, Corrosion and Heat Resistant Heat Treated, Roll Threaded, 1800Mdf (982.2Mdc) Soluti
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Product Code:SAE AMS7478
Title:Bolts and Screws, Steel, Corrosion and Heat Resistant Heat Treated, Roll Threaded, 1800Mdf (982.2Mdc) Solution and Precipitation Heat Treated (Cancelled Jan 1991)
Issuing Committee:
Scope:
Title:Bolts and Screws, Steel, Corrosion and Heat Resistant Heat Treated, Roll Threaded, 1800Mdf (982.2Mdc) Solution and Precipitation Heat Treated (Cancelled Jan 1991)
Issuing Committee:
Scope:
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【英文标准名称】:StandardGuideforForensicExaminationofNon-ReactiveDyesinTextileFibersbyThin-LayerChromatography
【原文标准名称】:司法鉴定用薄层色谱法对纺织品纤维中非活性染料检测指南
【标准号】:ASTME2227-2002(2008)
【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】:E30.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:fibers;forensicscience;thin-layerchromatography;Fibercolorant;Fibers;Forensicinvestigation/analysis;Nonreactivedyes;Singlefibercomparison;Textilefiber(forensic)analysis;Thinlayerchromatography(TLC)
【摘要】:ForensicanalysisoffibercolorantsusingTLCshouldbeconsideredforsinglefibercomparisonsonlywhenitisnotpossibletodiscriminatebetweenthefibersofinterestusingothertechniques,suchascomparisonmicroscopy(brightfieldandfluorescence)andmicrospectrophotometryinthevisiblerange.TheextractionprocedurescarriedoutpriortoTLCanalysiscanprovideusefulinformationaboutdyeclassification.TLCcanprovideusefulqualitativeinformationaboutdyecomponents.Similarcolorsmadeupofdifferentdyecomponentscanbedifferentiatedusingthistechnique.TheapplicationofTLCmayservetodiscriminatebetweenfibers,oritmayconfirmtheirsimilarity.TLCmaybeprohibitivelydifficultorundesirableinsomecircumstances.Shortlengthsoffibersorpalecoloredfibersmaynothaveanadequateconcentrationofcolorantpresenttobeexamined,dyeextractionfromsomefibersmaybeimpossible.Thedesiretopreserveevidenceforpossibleanalysisbyanotherexaminermayprecluderemovingthecolorforanalysis.Dyefromtheknownmaterialshouldfirstbecharacterizedandeluentsystemsevaluatedtoachieveoptimumseparationoftheextract.Dyeisthenextractedfromsingleknownandquestionedfibers,usinganequivalentamountofmaterial.ThedevelopmentofeachindividualTLCplatewillshowsomevariabilityasaresultofthecoatingandconditioningoftheplate,solventcondition,andtemperature.ItisimportanttoevaluatetheperformanceofeachTLCplatebyspottingknownmaterialsalongwiththequestionedsamples.SeeRef(16).ExamplesforthepreparationofStandarddyemixturesaregiveninAppendixX1.1.1MetamericcolorationoffiberscanbedetectedusingUV/visiblespectrophotometry.Ifspectrophotometryisrestrictedtothevisiblespectralrangeonly,differencesindyecomponentsmayremainundetected.Onemethodofdetectingadditionalcomponentsistousethin-layerchromatography(TLC).TLCisaninexpensive,simple,well-documentedtechniquethat,undercertainconditions,canbeusedtocomplementtheuseofvisiblespectroscopyincomparisonsoffibercolorants.Theprincipleofthemethodisthatthedyecomponentsareseparatedbytheirdifferentialmigrationcausedbyamobilephaseflowingthroughaporous,adsorptivemedium.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:W55
【国际标准分类号】:71_040_50
【页数】:6P.;A4
【正文语种】:英语
【英文标准名称】:Materialsandarticlesincontactwithfoodstuffs-Plastics-Testmethodsforoverallmigrationintooliveoil(modifiedmethodforuseincaseswhereincompleteextractionofoliveoiloccurs)
【原文标准名称】:与食品接触的材料和器具.塑料.进入橄榄油中全渗移析出量的试验方法(橄榄油不完全萃取时用的改进方法)
【标准号】:BSEN1186-10-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-10-14
【实施或试行日期】:2002-10-14
【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】:物品;袋;容器;烹调油;食品包装;食品;浸渍;浸渍试验;液态材料;材料;接触食品的材料;材料规范;迁移;目的;橄榄油;塑料容器;塑料薄膜;塑料;试验;测试助理
【英文主题词】:Articles;Bags;Containers;Cookingoils;Foodpackages;Foodproducts;Immersion;Immersiontests;Liquidmaterials;Materials;Materialsincontactwithfood;Materialsspecification;Migration;Objects;Oliveoil;Plasticcontainers;Plasticfilms;Plastics;Testing;Testingaids
【摘要】:ThisEuropeanStandardspecifiestestmethodsforthedeterminationoftheoverallmigrationintofattyfoodsimulantsfromplasticsmaterialsandarticles,bytotalimmersionoftestspecimensinafattyfoodsimulantatanytemperaturesabove5°Cuptoandincluding175°Cforselectedtimes.WhensomeplasticsaretestedbythemethodsinEN1186-2,EN1186-4,EN1186-6,EN1186-8,prEN1186-12andEN1186-13,thesoxhletextractionprocessdoesnotachievecompleterecoveryoftheabsorbedoliveoilfromthetestspecimens.Inthismethod,theoliveoilisreleasedfromtheplasticstestspecimensbydissolvingtheminchloroform,toluene,xyleneortetrahydrofuran.ThismethodissuitableforplasticswhenexposuretooliveoilisbytotalimmersionasdescribedinEN1186-2,inacell,asdescribedinEN1186-4,inapouch,asdescribedinEN1186-6,andbyfilling,asdescribedinEN1186-8andtotestscarriedoutatlowandhightemperature,asdescribedinprEN1186-12andEN1186-13.Thisisprovidedtheplasticsaresolubleinchloroform,toluene,xyleneortetrahydrofuranandinsolubleinmethanolandthatwheneverprEN1186-2isreferredtointhismethodtheappropriateclauseoftherelevantpartofEN1186issubstituted.Themethodcanalsobesuitableforplasticswhichareonlypartiallysolubleinchloroform,toluene,xyleneortetrahydrofuranandinsolubleinmethanol.NOTE1Thistestmethodhasbeenwrittenforusewiththefattyfoodsimulant,oliveoil.Thetestmethodcanalsobeusedwithappropriatemodificationswith'otherfattyfoodsimulants'calledsimulantD-asyntheticmixtureoftriglycerides,sunfloweroilandcornoil.Theseotherfattyfoodsimulantswillproducedifferentchromatogramsforthesimulantmethylesterstothoseofthemethylestersofoliveoil.Selectsuitablechromatogrampeaksofthemethylestersoftheotherfattyfoodsimulantsforthequantitativedeterminationofthesimulantextractedfromthetestspecimens.NOTE2IfithasbeenestablishedthattheoverallmigrationintooliveoilfromtheplasticscannotbedeterminedbyuseofeitherthismethodorthemethodsdescribedinEN1186-2,EN1186-4,EN1186-6andEN1186-8thentheuseofsubstitutetestsshouldbeconsidered,seeclause6ofEN1186-1:2001.
【中国标准分类号】:X08;C53
【国际标准分类号】:67_250
【页数】:16P.;A4
【正文语种】:英语
【原文标准名称】:司法鉴定用薄层色谱法对纺织品纤维中非活性染料检测指南
【标准号】:ASTME2227-2002(2008)
【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】:E30.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:fibers;forensicscience;thin-layerchromatography;Fibercolorant;Fibers;Forensicinvestigation/analysis;Nonreactivedyes;Singlefibercomparison;Textilefiber(forensic)analysis;Thinlayerchromatography(TLC)
【摘要】:ForensicanalysisoffibercolorantsusingTLCshouldbeconsideredforsinglefibercomparisonsonlywhenitisnotpossibletodiscriminatebetweenthefibersofinterestusingothertechniques,suchascomparisonmicroscopy(brightfieldandfluorescence)andmicrospectrophotometryinthevisiblerange.TheextractionprocedurescarriedoutpriortoTLCanalysiscanprovideusefulinformationaboutdyeclassification.TLCcanprovideusefulqualitativeinformationaboutdyecomponents.Similarcolorsmadeupofdifferentdyecomponentscanbedifferentiatedusingthistechnique.TheapplicationofTLCmayservetodiscriminatebetweenfibers,oritmayconfirmtheirsimilarity.TLCmaybeprohibitivelydifficultorundesirableinsomecircumstances.Shortlengthsoffibersorpalecoloredfibersmaynothaveanadequateconcentrationofcolorantpresenttobeexamined,dyeextractionfromsomefibersmaybeimpossible.Thedesiretopreserveevidenceforpossibleanalysisbyanotherexaminermayprecluderemovingthecolorforanalysis.Dyefromtheknownmaterialshouldfirstbecharacterizedandeluentsystemsevaluatedtoachieveoptimumseparationoftheextract.Dyeisthenextractedfromsingleknownandquestionedfibers,usinganequivalentamountofmaterial.ThedevelopmentofeachindividualTLCplatewillshowsomevariabilityasaresultofthecoatingandconditioningoftheplate,solventcondition,andtemperature.ItisimportanttoevaluatetheperformanceofeachTLCplatebyspottingknownmaterialsalongwiththequestionedsamples.SeeRef(16).ExamplesforthepreparationofStandarddyemixturesaregiveninAppendixX1.1.1MetamericcolorationoffiberscanbedetectedusingUV/visiblespectrophotometry.Ifspectrophotometryisrestrictedtothevisiblespectralrangeonly,differencesindyecomponentsmayremainundetected.Onemethodofdetectingadditionalcomponentsistousethin-layerchromatography(TLC).TLCisaninexpensive,simple,well-documentedtechniquethat,undercertainconditions,canbeusedtocomplementtheuseofvisiblespectroscopyincomparisonsoffibercolorants.Theprincipleofthemethodisthatthedyecomponentsareseparatedbytheirdifferentialmigrationcausedbyamobilephaseflowingthroughaporous,adsorptivemedium.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:W55
【国际标准分类号】:71_040_50
【页数】:6P.;A4
【正文语种】:英语
【英文标准名称】:Materialsandarticlesincontactwithfoodstuffs-Plastics-Testmethodsforoverallmigrationintooliveoil(modifiedmethodforuseincaseswhereincompleteextractionofoliveoiloccurs)
【原文标准名称】:与食品接触的材料和器具.塑料.进入橄榄油中全渗移析出量的试验方法(橄榄油不完全萃取时用的改进方法)
【标准号】:BSEN1186-10-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-10-14
【实施或试行日期】:2002-10-14
【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】:物品;袋;容器;烹调油;食品包装;食品;浸渍;浸渍试验;液态材料;材料;接触食品的材料;材料规范;迁移;目的;橄榄油;塑料容器;塑料薄膜;塑料;试验;测试助理
【英文主题词】:Articles;Bags;Containers;Cookingoils;Foodpackages;Foodproducts;Immersion;Immersiontests;Liquidmaterials;Materials;Materialsincontactwithfood;Materialsspecification;Migration;Objects;Oliveoil;Plasticcontainers;Plasticfilms;Plastics;Testing;Testingaids
【摘要】:ThisEuropeanStandardspecifiestestmethodsforthedeterminationoftheoverallmigrationintofattyfoodsimulantsfromplasticsmaterialsandarticles,bytotalimmersionoftestspecimensinafattyfoodsimulantatanytemperaturesabove5°Cuptoandincluding175°Cforselectedtimes.WhensomeplasticsaretestedbythemethodsinEN1186-2,EN1186-4,EN1186-6,EN1186-8,prEN1186-12andEN1186-13,thesoxhletextractionprocessdoesnotachievecompleterecoveryoftheabsorbedoliveoilfromthetestspecimens.Inthismethod,theoliveoilisreleasedfromtheplasticstestspecimensbydissolvingtheminchloroform,toluene,xyleneortetrahydrofuran.ThismethodissuitableforplasticswhenexposuretooliveoilisbytotalimmersionasdescribedinEN1186-2,inacell,asdescribedinEN1186-4,inapouch,asdescribedinEN1186-6,andbyfilling,asdescribedinEN1186-8andtotestscarriedoutatlowandhightemperature,asdescribedinprEN1186-12andEN1186-13.Thisisprovidedtheplasticsaresolubleinchloroform,toluene,xyleneortetrahydrofuranandinsolubleinmethanolandthatwheneverprEN1186-2isreferredtointhismethodtheappropriateclauseoftherelevantpartofEN1186issubstituted.Themethodcanalsobesuitableforplasticswhichareonlypartiallysolubleinchloroform,toluene,xyleneortetrahydrofuranandinsolubleinmethanol.NOTE1Thistestmethodhasbeenwrittenforusewiththefattyfoodsimulant,oliveoil.Thetestmethodcanalsobeusedwithappropriatemodificationswith'otherfattyfoodsimulants'calledsimulantD-asyntheticmixtureoftriglycerides,sunfloweroilandcornoil.Theseotherfattyfoodsimulantswillproducedifferentchromatogramsforthesimulantmethylesterstothoseofthemethylestersofoliveoil.Selectsuitablechromatogrampeaksofthemethylestersoftheotherfattyfoodsimulantsforthequantitativedeterminationofthesimulantextractedfromthetestspecimens.NOTE2IfithasbeenestablishedthattheoverallmigrationintooliveoilfromtheplasticscannotbedeterminedbyuseofeitherthismethodorthemethodsdescribedinEN1186-2,EN1186-4,EN1186-6andEN1186-8thentheuseofsubstitutetestsshouldbeconsidered,seeclause6ofEN1186-1:2001.
【中国标准分类号】:X08;C53
【国际标准分类号】:67_250
【页数】:16P.;A4
【正文语种】:英语