BS DD 257-1-2003 木材防腐剂和经过防腐处理的木材的分析方法.含硼化物的木材防腐液和经过防腐处理过的木材的定量分析.硼总含量的测定

上一篇: NF U44-184-2003 碳酸盐浸泡处理材料.反应性测定.盐酸电势滴定法
下一篇: BS ISO 5985-2003 动物饲料.盐酸不溶性灰分的测定

【英文标准名称】:Fattyfood-Determinationofpesticidesandpolychlorinatedbiphenyls(PCBs)-Determination,confirmatorytests,miscellaneous
【原文标准名称】:油脂食品.农药和多氯联苯(PCBs)的测定.测定、认可试验和其它各种试验
【标准号】:BSEN1528-4-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-06-15
【实施或试行日期】:1997-06-15
【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】:食品;试验条件;食品检验;脂肪;准确度;色谱法;试样制备;定量分析;液相色谱法;分离法(化学分析);农药;试验设备;污染物测定(食品);含量测定;质谱学;薄层色谱法;多氯联苯;柱色谱法;气相色谱法;化学分析和试验;文献索引
【英文主题词】:Analysis;Biphenyl;Chemicalanalysisandtesting;Cleaning;Clean-upmethods;Determinationofcontent;Extraction;Foodinspection;Foodproducts;Foodquality;Foodtesting;Gaschromatography;High-fat;PCB;Pesticides;Polychlorinatedbiphenyls;Protection;Quantitativeanalysis;Residuetests;Residues;Testing;Thin-layerchromatography
【摘要】:ThisPartofEN1528givesguidanceonsomerecommendedtechniquesforthedeterminationofpesticidesandpolychlorinatedbiphenyls(PCBs)infattyfoodstuffsandonconfirmatorytests,andlistsaclean-upprocedurefortheremovalofthebulkoflipidswhenanalysinglargequantitiesoffat.
【中国标准分类号】:X14
【国际标准分类号】:65_100_01;67_050
【页数】:16P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforMedandKempFibersinWoolandOtherAnimalFibersbyMicroprojection
【原文标准名称】:用显微投影法测定羊毛和其它动物纤维中的有髓纤维和死毛纤维的标准试验方法
【标准号】:ASTMD2968-1995(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:D13.13
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:animalfibers(exceptwool);microscopicalexamination;wool;Animalfibers;Kempfibercontent;Med(medullated)fibercontent;Microprojection;Woolandwooltop
【摘要】:TestMethodD2968forthedeterminationofmedandkempfibersbymicroprojectionmaybeusedfortheacceptancetestingofcommercialshipmentsofwoolandotheranimalfibers,butcautionisadvisedsinceonlyafewtypesofanimalfibershavebeensubjectedtointerlaboratoryteststoascertaintheprecisionoftestsformedandkempfibersbythistestmethod.Comparativetestsasdirectedin5.1.1maybeadvisable.IncaseofadisputearisingfromdifferencesinreportedtestresultswhenusingTestMethodD2968foracceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimenswhichareashomogeneousaspossibleandwhicharefromalotofmaterialofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingStudent''st-testforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforetestingisbegun.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orthepurchaserandthesuppliermustagreetointerpretfuturetestresultsinviewoftheknownbias.Knowledgeoftheincidenceofmedfibersandkempfibersinwoolandotheranimalfibersisofimportancetomanufacturersofwovenorknittedfabricsbecauseoftheapparentdyeresistanceandlightreflectancequalitiesofthesefibers.Thisisnottoimplythatallkempfiberswillresistdyeandallmedfiberswillacceptdyenormally.Inpractice,aproportionofkempfiberswillappearnormalafterdyeingandaproportionofmedfiberswillappearchalkywhiteafterdyeing.Fromtheperspectiveofvisualandaestheticproblems,medullatedfibershavinganabnormallylargediameterandahighdegreeofmedullationareprobablytheworstkind.Note8212;Thecontrastbetweenthesolidandthehollowportionsofthemedullatedfibersissignificantlyreducedwhenthemedullabecomesfilledwithmountingmedium.FIG.1TypesofMedullainWoolandMohairFibers1.1Thistestmethodcoversthedeterminationbymicroprojectionofthepercentageofmedullatedfibers(medandkempfibers)inwoolorotheranimalfiberssuchasmohair,cashmere,alpaca,orcamel''shairintheirvariousforms.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W20
【国际标准分类号】:59_060_10
【页数】:3P.;A4
【正文语种】:英语