| 杜马斯燃烧法与凯氏定氮法测定肥料中总氮含量的比较研究 |
| |
| 引用本文： | 殷萍,孟兆芳,陈秋生.杜马斯燃烧法与凯氏定氮法测定肥料中总氮含量的比较研究[J].天津农业科学,2012,18(6):30-33. |
| |
| 作者姓名： | 殷萍 孟兆芳 陈秋生 |
| |
| 作者单位： | 天津市农业质量标准与检测技术研究所,天津,300381 |
| |
| 基金项目： | 天津市应用基础及前沿技术研究计划 |
| |
| 摘 要： | 应用杜马斯燃烧法及凯氏定氮法对肥料中总氮含量分别进行测定。结果表明,杜马斯燃烧法的测定结果略高于凯氏定氮法的测定结果。杜马斯燃烧法测定结果的相对标准偏差分别为0.14%、0.15%、0.18%、0.23%、1.56%、1.03%,加标回收率均值分别为98.9%、99.1%、98.1%、97.9%、98.1%。凯氏定氮法测定结果的相对标准偏差分别为0.17%、0.35%、0.46%、0.24%、2.40%、1.24%,加标回收率均值分别为98.2%、98.1%、97.4%、96.7%、96.3%。因此,杜马斯燃烧法可作为肥料总氮检测的方法之一。
|
| 关 键 词： | 杜马斯燃烧法 凯氏定氮法 肥料 比较 |
Comparison of the Dumas Combustion Method and Kjeldahl Method for Total Nitrogen Determination in Fertilizers |
| |
| YIN Ping
,
MENG Zhao-fang
,
CHEN Qiu-sheng.Comparison of the Dumas Combustion Method and Kjeldahl Method for Total Nitrogen Determination in Fertilizers[J].Tianjin Agricultural Sciences,2012,18(6):30-33. |
| |
| Authors: | YIN Ping MENG Zhao-fang CHEN Qiu-sheng |
| |
| Institution: | (Tianjin Institute of Agricultural Quality Standard and Testing Technology, Tianjin 300381, China) |
| |
| Abstract: | In the article, Dumas combustion method and Kjeldahl method was used in total nitrogen determination in fertilizers respectively. It was concluded that results of nitrogen content by Dumas method were higher than by Kjeldahl. The RSDs of Dumas combustion method were 0.14%, 0.15%, 0.18%, 0.23%, 1.56%, 1.03%, while the recoveries of standard addition were 98.9%, 99.1%, 98.1%, 97.9%, 98.1%. The RSDs of Kjeldahl method were 0.17%, 0.35%, 0.46%, 0.24%, 2.40%, 1.24%, while the recoveries of standard addition were 98.2%, 98.1%, 97.4%, 96.7%, 96.3%. And Dumas combustion method could be one of methods for total nitrogen determination in fertilizers. |
| |
| Keywords: | Dumas combustion method Kjeldahl method fertilizers comparison |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
