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  • BSI
    BS EN 16339:2025 Ambient air. Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
    Edition: 2025
    $539.77
    / user per year

Description of BS EN 16339:2025 2025

This document specifies a method for the sampling of NO2 in ambient air using diffusive sampling followed by extraction and analysis by colourimetry or ion chromatography (IC). It can be used for the NO2 measurement in a concentration range of approximately 3 µg/m3 to 130 µg/m3 [12]. A sample is typically collected for a period of 1 to 4 weeks [14], with exposure periods depending on the design of the samplers and the concentration levels of NO2. Several sorbents can be used for trapping NO2 in ambient air using a diffusive sampler [15]. This document specifies the application of triethanolamine as the reagent. This document describes the application of a tube-type sampler (with either a cylindrical or a slightly conical tube), a badge-type sampler and a radial-type sampler. The relative expanded uncertainty of NO2 measurements performed using these tube-type diffusive samplers can potentially be lower than 25 % for individual measurements. When aggregating results to form annual average values, the relative expanded uncertainty can be further reduced to levels below 15 % due to the reduction of random effects on uncertainty [9]. NOTE NO2 passive samplers are also employed to measure NOx with the addition of an oxidant to convert ambient NO into NO2. A second NO2 sampler is also deployed without the oxidant and the concentration of NO is determined from the difference of the two samplers [16].

Standard NumberBS EN 16339:2025
TitleAmbient air. Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
StatusDefinitive
Publication Date2025-04-10
ReplacesBS EN 16339:2013
Identical National Standard OfEN 16339
DescriptorsMonoxides, Pollutant gases, Luminescence, Measurement characteristics, Nitrogen oxides, Gas analyzers, Acceptance (approval), Nitrogen dioxide, Gas analysis, Chemical analysis and testing, Determination of content, Quality, Approval testing, Air, Air pollution
ICS13.040.20 Ambient atmospheres
CommitteeEH/2/3
ISBN978 0 539 26632 0
PublisherBSI
Pages58



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About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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