丁兆娟,吕延延,张清智,刘爱芹.全自动凯氏定氮仪测定天然橡胶氮含量[J].橡胶科技,2015,13(1):44-47. |
 二维码(扫一下试试看!) |
全自动凯氏定氮仪测定天然橡胶氮含量 |
Determination of Nitrogen Content in NR by Kjeltec Automatic System |
|
DOI: |
中文关键词: 全自动凯氏定氮仪 天然橡胶 氮含量 |
英文关键词: Kjeltec automatic system NR nitrogen content |
基金项目: |
中图分类号: |
|
摘要点击次数: 1196 |
全文下载次数: 1307 |
中文摘要: |
研究全自动凯氏定氮仪测定天然橡胶(NR)的氮含量。确定全自动凯氏定氮仪测定NR氮含量的优化消化过程试验条件为:试样1.0 g,浓硫酸20 mL,催化剂10 g,420 ℃消化60 min。全自动凯氏定氮仪测定NR氮含量具有操作简便、快速、仪器精密度高和测定值准确度高等特点。 |
英文摘要: |
The study aimed to investigate the determination of nitrogen content in NR by Kjeltec 8400 automatic system.The optimal experimental conditions for sample preparation were as follows:1.0 g of NR sample,20 mL of concentrated sulfuric acid,10 g of catalyst,and treatment at 420 ℃ for 60 min.Compared with the manual method,full automatic system has the advantages of simple operation,short process,high accuracy and high precision. |
|
查看全文
查看/发表评论 下载PDF阅读器 |