BS 1747-9:1987
Current
The latest, up-to-date edition.
Methods for measurement of air pollution Determination of the mass concentration of nitrogen oxides in ambient air: chemiluminescence method
Hardcopy , PDF
English
30-09-1987
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National foreword
Committees responsible
Method
1 Scope and field of application
2 References
3 Principle
4 Reactions
5 Apparatus
6 Procedure
7 Expression of results
8 Test report
Annex
Typical performance characteristics
Figures
1(a) Schematic representation of a dual type
chemiluminescence analyser (two reaction chambers
and photomultipliers)
1(b) Schematic representation of a dual type
chemiluminescence analyser utilizing a double
reaction chamber and one photomultiplier
1(c) Schematic representation of a cyclic type
chemiluminescence analyser
2 Schematic representation of arrangement for
checking analyser converter efficiency
3 Schematic representation of a typical calibration
system using a nitrogen dioxide permeation cell
Applicable to the measurement of NO up to a concentration of 12.5 mg/m3 and of NO2 up to 19 mg/m3 at 25°C and 101.3 kPa.
| Committee |
EH/2
|
| DevelopmentNote |
Supersedes 84/50181 DC. Also numbered as ISO 7996. (06/2005)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This International Standard specifies a chemiluminescence method for the determination of the mass concentration of nitrogen oxides present in ambient air.
The method is applicable to the determination of the mass concentration of nitrogen monoxide present in ambient air up to approximately 12,5 mg/m3 and of nitrogen dioxide up to approximately 19 mg/m3 respectively1) at 25 °C and 101,3 kPa.
For interferents, see 6.6.
1) At the temperature and pressure given, the following conversion factors apply.
| BS 4599(1970) : LATEST | DIMENSIONAL FEATURES OF OPTICAL SOUND RECORDING ON 8MM (TYPE S) MOTION PICTURE FILM WITH PICTURE |
| ISO 6711:1981 | Gas analysis Checking of calibration gas mixtures by a comparison method |
| BS 4559-3:1983 | Methods for preparation of calibration gas mixtures Static volumetric methods |
| ISO 6879:1995 | Air quality — Performance characteristics and related concepts for air quality measuring methods |
| BS 4559-7:1981 | Methods for preparation of calibration gas mixtures Permeation method |
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