GB/T 321-1980
Replaced
T/CMA 031-2021
Active
Group standards
\nT/CMA 031-2021 Calibration Method for Alkaline Nitrogen Detector
T/CMA 031-2021
Price:
$ 20.00
Basic Information
Standard Code:
T/CMA 031-2021
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
-
ICS Name:
Integrated Metrology and Measurement
Publish Date:
2021-05-20
Implement Date:
2021-06-20
Scope
Main technical content: Alkaline nitrogen refers to nitrogen-containing compounds that have alkaline groups and can accept H protons. These mainly include pyridines, quinolines, anilines, etc. The measurement principle of the alkaline nitrogen detector is similar to that of potentiometric titration. The sample is dissolved in a mixed solution of xylene and glacial acetic acid. The high chloric acid-glacial acetic acid standard solution is used as the titrant. By recording the electrode potential and titrant volume during the titration process, the equivalence point and the corresponding volume of the standard titrant solution can be identified, and the content of alkaline nitrogen can be calculated accordingly.