【英文标准名称】:Soilimproversandgrowingmedia-Extractionofaquaregiasolubleelements
【原文标准名称】:土壤改良剂和生长剂.可溶性王水元素的提取
【标准号】:BSEN13650-2001
【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】:土壤;萃取分析法;王水;土壤改良;土壤学;氮无机化合物;肥料;化学分析和试验
【英文主题词】:Agriculture;Aquaregia;Chemicals;Elements;Extraction;Extractionagents;Extractionmethodsofanalysis;Growingmedia;Inter-laboratorytests;Methodsofanalysis;Soilimprovement;Soilimprovingmaterials;Soils;Soluble;Solvents;Substrates(insulating)
【摘要】:ThisEuropeanStandardspecifiesamethodfortheroutineextractionofaquaregiasolubleelements(aslistedinannexB)fromsoilimproversorgrowingmedia.Materialscontainingmorethanabout28%(m/m)organicmatterwillrequiretreatmentwithadditionalnitricacid.Withhighsoluteconcentrationsinextractsolutions,spectralinterference'sandbackgroundenhancementshouldbeexpected.Themethodisnotapplicabletolimingmaterialsandpreformedmaterialssuchasmineralwoolslabsandfoamslabs.NOTE1Aquaregiawillnottotallydissolvemostsoilimproversorgrowingmedia,andtheefficiencyofextractionforparticularelementsdiffersfromelementtoelement.Suchefficiencymightalsodifferforthesameelementindifferentmatrices.Elementsextractableinaquaregiacannottherefore,bedescribedas"Totals";converselytheycannotberegardedasthe"bio-available"fraction,astheextractionprocedureistoovigoroustorepresentanybiologicalprocess.NOTE2Therequirementsofthestandardmaydifferfromthenationallegalrequirementsforthedeclarationoftheproductsconcerned.
【中国标准分类号】:B11
【国际标准分类号】:65_080
【页数】:20P.;A4
【正文语种】:英语