ASTM E258-2007 用改进的基尔达斯(Kjeldahl)法测定有机材料中总氮含量的试验方法
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【英文标准名称】:StandardTestMethodforTotalNitrogeninOrganicMaterialsbyModifiedKjeldahlMethod
【原文标准名称】:用改进的基尔达斯(Kjeldahl)法测定有机材料中总氮含量的试验方法
【标准号】:ASTME258-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E15.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:分析;化学分析和试验;化合物;基尔达斯法;材料;氮;测试
【英文主题词】:modifiedKjeldahlmethod;nitrogen;organicmaterials
【摘要】:Thistestmethodmaybeusedtodeterminethetotalnitrogencontentofcertainunknownorganicsamples,ortoassayknownnitrogencontainingorganiccompounds.Thistestmethodmaybeusedonorganicmaterialsinwhichthecompleteconversionofnitrogentoammoniumsulfatecanbeaccomplishedbydigestioninamixtureofsulfuricacid,potassiumsulfate,andmercuricoxide.ItcannotbeusedonmaterialscontainingNx2013;O,Nx2013;Nlinkages.Thistestmethodassumesthatammoniacanbequantitativelymeasuredbydistillationfromanalkalinesolutionintoameasuredvolumeofstandardacid.1.1Thistestmethodcoversthedeterminationoftotalnitrogeninnitrogen-containingorganiccompounds.ThistestmethodisnotapplicableforuseonmaterialscontainingN-O,N-Nlinkages.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;AnothermethodofrestrictedapplicationisgiveninTestMethodD1013.
【中国标准分类号】:A43
【国际标准分类号】:71_080_30
【页数】:4P.;A4
【正文语种】:
【原文标准名称】:用改进的基尔达斯(Kjeldahl)法测定有机材料中总氮含量的试验方法
【标准号】:ASTME258-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E15.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:分析;化学分析和试验;化合物;基尔达斯法;材料;氮;测试
【英文主题词】:modifiedKjeldahlmethod;nitrogen;organicmaterials
【摘要】:Thistestmethodmaybeusedtodeterminethetotalnitrogencontentofcertainunknownorganicsamples,ortoassayknownnitrogencontainingorganiccompounds.Thistestmethodmaybeusedonorganicmaterialsinwhichthecompleteconversionofnitrogentoammoniumsulfatecanbeaccomplishedbydigestioninamixtureofsulfuricacid,potassiumsulfate,andmercuricoxide.ItcannotbeusedonmaterialscontainingNx2013;O,Nx2013;Nlinkages.Thistestmethodassumesthatammoniacanbequantitativelymeasuredbydistillationfromanalkalinesolutionintoameasuredvolumeofstandardacid.1.1Thistestmethodcoversthedeterminationoftotalnitrogeninnitrogen-containingorganiccompounds.ThistestmethodisnotapplicableforuseonmaterialscontainingN-O,N-Nlinkages.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;AnothermethodofrestrictedapplicationisgiveninTestMethodD1013.
【中国标准分类号】:A43
【国际标准分类号】:71_080_30
【页数】:4P.;A4
【正文语种】:
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