BS ISO 6768:1998
Current
The latest, up-to-date edition.
Ambient air. Determination of mass concentration of nitrogen dioxide. Modified Griess-Saltzman method
Hardcopy , PDF
English
15-10-1998
Important note : Users cannot be edited or removed once added to your Multi user PDF.Applicable within the range 0,003 to about 2 mg/m3 with a sampling period from 10 min to 2 h.
| Committee |
EH/2/3
|
| DevelopmentNote |
Supersedes 95/521515 DC and BS 1747-8(1986). (08/2004)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard specifies a modified Griess-Saltzman method for the determination of the mass concentration of nitrogen dioxide present in ambient air.
The method is applicable to the determination of the mass concentration of nitrogen dioxide present in ambient and confined air within the range 0,003mg/m3 to 2mg/m3 and for sampling times between 10min and 2h.
Substances present in the air mass under investigation, and thus in the air sample, and known to have an effect on the instrument reading, are given in 7.4. Information on the performance characteristics is given in 8.2.
The method is not suitable for personal breathing-zone sampling.
The Griess-Saltzman method is suitable for the analytical check of calibration gas mixtures which are used to calibrate chemiluminescence analysers (see ISO7996).
| Standards | Relationship |
| ISO 6768:1998 | Identical |
| ISO 6349:1979 | Gas analysis Preparation of calibration gas mixtures Permeation method |
| ISO 7996:1985 | Ambient air — Determination of the mass concentration of nitrogen oxides — Chemiluminescence method |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.