【英文标准名称】:Soilimproversandgrowingmedia-Determinationofnitrogen-ModifiedKjeldahlmethod
【原文标准名称】:土壤改良剂和生长剂.氮的测定.改良的基尔达斯法
【标准号】:BSEN13654-1-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-11-09
【实施或试行日期】:2001-11-09
【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】:化学分析和试验;含量测定;肥料;基尔达斯法;定量分析;土壤学;土壤改良;培养基;氮;土壤
【英文主题词】:Agriculture;Chemicals;Determinationprocedures;Extraction;Extractionagents;Extractionmethodsofanalysis;Growingmedia;Inter-laboratorytests;Kjeldahl;Kjeldahlsmethod;Methodsofanalysis;Modified;Nitrogen;Nitrogencontent;Nitrogenousfertilizers;Soilimprovement;Soilimprovingmaterials;Soils;Soluble;Solvents;Substrates(insulating)
【摘要】:ThisEuropeanStandardspecifiesamethodforthedeterminationofnitrogeninsoilimproversandgrowingmedia.TheKjeldahlmethoddeterminesammonium-N,nitrate-N,nitrite-NandorganicNcontentofsoilimproversandgrowingmedia.NitrogeninN-N-linkages,N-O-linkagesandsomeheterocyclics(especiallypyridine)isonlypartiallydetermined.[6],[7],[8]Themethodisnotapplicabletolimingmaterialsandpreformedmaterialssuchasmineralwoolslabsandfoamslabs.NOTETherequirementsofthestandardmaydifferfromthenationallegalrequirementsforthedeclarationoftheproductsconcerned.
【中国标准分类号】:B11
【国际标准分类号】:65_080
【页数】:14P.;A4
【正文语种】:英语