现代农业科技Issue(17)：230-231,2.
蒸馏滴定法测定复混肥料中氮含量的不确定度评定研究
Study on Evaluation of the Uncertainty of Measurement for the Determation of Nireogen Content in Compound Fertilizers by Distillation Titration
张桂娟 1姚成虎1
作者信息
- 1. 安徽省马鞍山市产品质量监督检验所，安徽马鞍山 243000
- 折叠
摘要
Abstract
According to GB/T 8572-2010 method,the determination of nitrogen content in compound fertilizer was analyzed by distillation titration,the mathematical model of nitrogen content was established and the main source of uncertainty was analyzed. Through the analysis of each component,synthetic standard uncertainty and expanded uncertainty were calculated. The results showed that the expanded uncertainty was 0.07%,and the determination results of nitrogen content was(10.29±0.07)%,k value was 2.关键词
复混肥料/氮/不确定度/评定Key words
compound fertilizer/nitrogen/uncertainty/evaluation分类
化学化工引用本文复制引用
张桂娟,姚成虎..蒸馏滴定法测定复混肥料中氮含量的不确定度评定研究[J].现代农业科技,2013,(17):230-231,2.
