复合肥料中总氮含量的测定方法探讨  

Discussion on the Determination Method of Total Nitrogen Content in Compound Fertilizers

作　　者：周超 李代兵 ZHOU Chao;LI Daibing(Qiannan Prefecture Inspection and Testing Center,Xingyi 562400,China)

机构地区：[1]黔西南州检验检测中心,贵州兴义562400

出　　处：《品牌与标准化》2024年第3期25-27,共3页

摘　　要：通过凯氏定氮法对复合肥料进行精密度试验和加标回收率试验,将复合肥料中总氮含量测定结果与蒸馏后滴定法(仲裁法)测定结果进行比较。实验表明,凯氏定氮法操作简单、耗时少、节约试验成本,并且准确率和重复率高,数据准确可靠。The precision test and spiked recovery rate test were conducted on composite fertilizers using the Kjeldahl nitrogen determination method.The results of the total nitrogen content determination in composite fertilizers were compared with those of the titration method(arbitration method)after distillation.The experiment showed that the Kjeldahl nitrogen determination method was simple to operate,time-consuming,cost-effective,with high accuracy and repeatability,and the data was accurate and reliable.

关 键 词：复合肥料 凯氏定氮法 加标回收率 精密度 总氮含量 因素分析 

分 类 号：TQ444[化学工程—化学肥料工业]