GB/T 6919-1986
Abolished
T/LNEMA 012-2024
Active
Group standards
T/LNEMA 012-2024 Determination of Nitrogen Dioxide in Ambient Air by Passive Absorption Sampling and Spectrophotometry
T/LNEMA 012-2024 Determination of Nitrogen Dioxide in Ambient Air by Passive Absorption Sampling and Spectrophotometry
Price:
$ 20.00
Basic Information
Standard Code:
T/LNEMA 012-2024
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
-
ICS Name:
Environmental air
Publish Date:
2024-09-04
Implement Date:
2024-10-04
Scope
Main technical content: This standard specifies the passive absorption sampling-spectrophotometry method for measuring nitrogen dioxide in ambient air. This standard is applicable to the measurement of nitrogen dioxide in air during regional environmental air quality surveys or when identifying pollution hotspots. The detection limit of this method is 0.02 μg/ml. When the sampling time is 720 hours, the detection limit is 0.6 μg/m3 and the measurement lower limit is 2.4 μg/m3; when the sampling time is 336 hours, the detection limit of this standard is 1.2 μg/m3 and the measurement lower limit is 4.8 μg/m3.
Development Information
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