NEN EN 14662-1 : 2005
Current
The latest, up-to-date edition.
AMBIENT AIR QUALITY - STANDARD METHOD FOR THE MEASUREMENT OF BENZENE CONCENTRATIONS - PART 1: PUMPED SAMPLING FOLLOWED BY THERMAL DESORPTION AND GAS CHROMATOGRAPHY
12-01-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Method description
4.1 Principle
4.2 Reagents and materials
4.3 Apparatus
4.4 Sample tube conditioning
4.5 Setting of sampling flow rate
4.6 Sampling
4.7 Procedure
4.8 Calculation of mass concentration of benzene
4.9 Report
5 Determination of measurement uncertainty
5.1 Introduction
5.2 Parameters contributing to measurement uncertainty
6 Recommendations for use
Annex A (informative) Extrapolated retention volumes and safe
sampling volumes for benzene at 20 degrees C
Annex B (informative) Description of sorbent types
Annex C (informative) Guidance on sorbent selection
Annex D (informative) Guidance on sorbent use
Annex E (informative) Determination of breakthrough volume from gas
standards
Annex F (informative) Determination of breakthrough volumes from
extrapolated retention volumes
Annex G (informative) Assessment of performance indicators and
uncertainty contributions
Annex H (informative) Performance characteristics
Bibliography
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