【英文标准名称】:StandardGuideforSpikingOrganicsintoAqueousSamples
【原文标准名称】:有机物在水中样本的峰值标准导则
【标准号】:ASTMD5788-1995(2005)
【标准状态】:现行
【国别】:
【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】:D19.06
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:试样;化学分析和试验;含水的;有机物质
【英文主题词】:bias;internalstandards;matrixspike;organics;percentrecovery;qualityassurance;recovery;spike;spiking;standardadditions;surrogates
【摘要】:1.1Thisguidecoversthegeneraltechniqueof"spiking"aqueoussampleswithorganicanalytesorcomponents.Itisintendedtobeapplicabletoabroadrangeoforganicmaterialsinaqueousmedia.Althoughthespecificdetailsandhandlingproceduresrequiredforalltypesofcompoundsarenotdescribed,thisgeneralapproachisgiventoserveasaguidelinetotheanalystinaccuratelypreparingspikedsamplesforsubsequentanalysisorcomparison.Guidanceisalsoprovidedtoaidtheanalystincalculatingrecoveriesandinterpretingresults.Itistheresponsibilityoftheanalysttodeterminewhetherthemethodsandmaterialscitedherearecompatiblewiththeanalytesofinterest.1.2Theproceduresinthisguidearefocusedon"matrixspike"preparation,analysis,results,andinterpretation.Theapplicabilityoftheseprocedurestothepreparationofcalibrationstandards,calibrationcheckstandards,laboratorycontrolstandards,referencematerials,andotherqualitycontrolmaterialsbyspikingisincidental.Asample(thematrix)isfortified(spiked)withtheanalyteofinterestforavarietyofanalyticalandqualitycontrolpurposes.Whilethespikingofmultiplesampletestportionsisdiscussed,themethodofstandardadditionsisnotcovered.1.3Thisguideisintendedforuseinconjunctionwiththeindividualanalyticaltestmethodthatprovidesproceduresforanalysisoftheanalyteorcomponentofinterest.Thetestmethodisusedtodetermineananalyteorcomponent''sbackgroundleveland,againafterspiking,itsnowelevatedlevel.Eachtestmethodtypicallyprovidesproceduresnotonlyforsamples,butalsoforcalibrationstandardsoranalyticalcontrolsolutions,orboth.Theseproceduresincludepreparation,handling,storage,preservation,andanalysistechniques.Theseproceduresareapplicablebyextension,usingtheanalyst''sjudgementonacase-by-casebasis,tospikingsolutions,andarenotreiteratedinthisguide.SeealsoPracticeE200forpreparationandstorageinformation.1.4Theseproceduresapplyonlytoanalytesthataresolubleinwaterattheconcentrationofthespikeplusanybackgroundmaterial,ortoanalytessolubleinasolventthatisitselfwater-soluble.Thesystemusedinthelatercasemustresultinahomogeneoussolutionofanalyteandsample.Meaningfulrecoverydatacannotbeobtainedifanaqueoussolutionorhomogeneoussuspensionoftheanalyteofinterestinthesamplecannotbeattained.1.5Matrixspikingmaybeperformedinthefieldorinthelaboratory,dependingonwhichpartoftheanalyticalprocessistobetested.Fieldspikingteststherecoveryoftheoverallprocess,includingpreservationandshippingofthesample.Laboratoryspikingteststhelaboratoryprocessonly.Spikingofsampleextracts,concentrates,ordilutionswilltestonlythatportionoftheprocesssubsequenttotheadditionofthespike.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:71_040_40
【页数】:7P.;A4
【正文语种】: