Table of Contents

1 -  AS 2365.1.2-1990 METHODS FOR THE SAMPLING AND ANALYSIS OF INDOOR AIR - DETERMINATION OF NITROGEN DIOXIDE - SPECTROPHOTOMETRIC
1 -  PREFACE
1 -  CONTENTS
1 -  METHOD
1 -  1 SCOPE.
1 -  2 APPLICATION.
2 -  3 REFERENCED DOCUMENTS.
2 -  4 PRINCIPLE.
2 -  5 DEFINITION.
2 -  6 REAGENTS AND MATERIALS.
2 -  6.1 General requirements.
2 -  6.2 Sodium nitrite solution.
2 -  6.3 Triethanolamine solution.
2 -  6.4 Azo dye-forming reagent.
2 -  6.5 Standard dye solution.
2 -  6.6 Reference gas.
2 -  6.7 Diluent gas.
2 -  7 APPARATUS.
2 -  7.1 Passive sampling badge (see Figure 1)
3 -  7.2 Spectrophotometer
3 -  7.3 Chemiluminescence nitrogen dioxide analyser
3 -  7.4 Drying oven
3 -  7.5 Gas mixing manifold
3 -  8 PREPARATION OF PASSIVE SAMPLING BADGES.
3 -  9 SAMPLING.
4 -  10 PROCEDURE.
4 -  10.1 Calibration graph.
4 -  10.2 Calibration constant.
5 -  10.3 Determination.
5 -  11 CALCULATION AND EXPRESSION OF RESULTS.
5 -  12 PRECISION.
6 -  13 TEST REPORT.
6 -  14 BIBLIOGRAPHY.

Abstract

Sets out a spectrophotometric method for the determination of nitrogen dioxide in indoor air using a passive sampling treated filter technique. This method is applicable to indoor air in which the expected nitrogen dioxide concentration is within the range 0 to 3 ppm (V/V) (0 to 6000 µg/m(sup)3(/sup)) for an exposure time of 1 h, and has a detection limit of 0.35 ppm for a 2 h sampling period.

RECONFIRMATION NOTICE
Technical Committee EV-007 has reviewed the content of this publication and in
accordance with Standards Australia procedures for reconfirmation, it has been determined
that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original
date of publication. Users are advised to ensure that they are using the latest versions of
such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for
reconfirmation on 9 September 2014.
The following are represented on Technical Committee EV-007:
Australian Aluminium Council
Australian Bureau of Meteorology
Australian Chamber of Commerce and Industry
Australian Industry Group
Clean Air Society of Australia and New Zealand
CSIRO Marine and Atmospheric Research
Department of Environment and Conservation, WA
Department of Science, Information Technology, Innovation and the Arts, Qld
Environment Protection Authority, Vic.
National Association of Testing Authorities Australia
Office of Environment and Heritage, NSW

Scope

This Standard sets out a spectrophotometric method for the determination of nitrogen dioxide in indoor air using a passive sampling, treated filter technique. This method is applicable to indoor air in which the expected nitrogen dioxide concentration is within the range 0 to 3 p.p.m. (V/V) (0 to 6 000 mg/m3) for an exposure time of 1 h, and has a detection limit of 0.035 p.p.m. for a 2 h sampling period.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 14/10/2014. This standard has been reconfirmed in Australia in 2014 and remains current in New Zealand. Reconfirmation Notice 14/10/2014
Pages
ISBN
Committee	EV-007
Supersedes	DR 89025