肥料中硝态氮、铵态氮、总氮的研究

研究仅含硝态氮、铵态氮的肥料,结果表明,用GB/T8572-2010《复混肥料中总氮含量的测定蒸馏后滴定法》检测含有硝态氮、铵态氮的肥料中铵态氮含量、硝态氮含量(差减法总氮含量-铵态氮含量=硝态氮含量)(标准GB/T8572-2010《复混肥料中总氮含量的测定蒸馏后滴定法》中没有体现总氮含量-铵态氮含量=硝态氮含量,这是根据铵态氮与硝态氮性质总结研究出来的)与标准NY/T1116-2014《肥料硝态氮、铵态氮、酰胺态氮含量的测定》单独检测铵态氮含量、硝态氮含量结果无显著性差异。GB/T8572-2010检测总氮含量与SN/T0736.5-2010《进出口化肥检验方法第5部分:氮含量的测定》检测总氮含量无显著性差异。

Research status of nitrate nitrogen,ammonium nitrogen and total nitrogen in fertilizer

the study only containing nitrate nitrogen and ammonium nitrogen fertilizer,the results show that the GB/T8572-2010 "total nitrogen in compound fertilizers by titration after distillation" detection with nitrate nitrogen,ammonium nitrogen fertilizer,ammonium nitrogen,nitrate nitrogen content(total nitrogen content-difference subtraction the content of ammonium nitrogen=nitrate nitrogen content(GB/T8572-2010)standard "total nitrogen in compound fertilizers by titration after distillation" did not reflect the content of total nitrogen and ammonium nitrogen content=nitrate nitrogen content,which is based on ammonium nitrogen and nitrate nitrogen on the properties of summary)and standard NY/"T1116-2014 fertilizer,nitrate nitrogen,ammonium nitrogen and urea nitrogen content determination of" separate detection of the content of ammonium nitrogen and nitrate nitrogen content showed no significant differences.GB/T8572-2010 detection of total nitrogen content and SN/T0736.5-2010 "import and export chemical fertilizer inspection method fifth part:Determination of nitrogen content",there is no significant difference in total nitrogen content.