用自动凯氏定氮仪测定高塔尿基复合肥中的氮含量  

Determination of Nitrogen Content in Urea-based Compound Fertilizer by Tower Granulation with Automatic KjeldahlNitrogen Analyzer

作　　者：李天祥[1] 陈晨[1] 胡宏 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550003 [2]瓮福〈集团〉有限责任公司,贵州福泉550501

出　　处：《硫磷设计与粉体工程》2010年第4期46-48,共3页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

摘　　要：采用自动凯氏定氮仪测定高塔尿基复合肥中的氮含量,通过实验得出含氮量50～100mg的复合肥样品消化时硫酸的最佳加入量为10～15mL,并通过测定分析尿素的氮含量、测定高塔尿基复合肥中氮含量的精密度实验、加标回收率实验检验了该方法的准确性。Automatic Kjeldahl nitrogen analyzer is used to determine the nitrogen content in urea-based compound fertilizer by tower granulation.Through test,the optimum charging volume of concentrated sulfuric acid for digestion is 10～15 mL.And through the precision test for determination and analysis of nitrogen content in pure urea,determination of nitrogen content in urea-based compound fertilizer by tower granulation,and test of standard recovery rate,it verifies the accuracy of this method.

关 键 词：凯氏定氮仪 尿基高塔复合肥 氮含量 检验 

分 类 号：TQ444[化学工程—化学肥料工业]