"MT/T 279-1994 Method for the determination of nitrogen oxides (Nitric Oxide and Nitrogen Dioxide) in mine air using a specific length nitrogen oxide detection tube". The standard applies to the determination of the concentration of nitrogen oxides in mine air, and the concentration is expressed in ppm (V/V). The detection principle is to indicate the chemical substances in the powder by carrier adsorption. When the mine air containing nitrogen oxides passes through, the Color of the indicator powder will change, and the concentration of nitrogen oxides will be determined according to the length of the Color change.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | (Z11) 气体介质与放射性物质采样方法 | ICS | |
| Release Date | 1992-05-01 00:00:00 | Implementation Date | 1994-10-01 00:00:00 |