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EURAMET 886 comparison of multicomponent ambient VOC measurements - Final report.

Grenfell, R; Brookes, C; Vargha, G; Quincey, P; Milton, M J T; Woods, P T; Harris, P M (2008) EURAMET 886 comparison of multicomponent ambient VOC measurements - Final report. NPL Report. AS 29

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Abstract

NPL prepared, analysed and circulated gas cylinders containing mixtures of Volatile Organic Compounds (VOCs) at amount fractions of a few nmol/mol (molar ppb). The set of VOCs was the set of ozone precursors listed in the Ambient Ozone Directive 2002/3/EC Annex VI. This Report describes all activities involved in delivering this comparison including measurement of cylinder stability. During this exercise the stability trial of 1-10 nmol/mol VOC mixtures showed less than 0.6% drift for most species over 1 year. Further work, providing increasing statistical weight, has shown less than 0.3% annual drift for all species over 2 years. The accuracy of these standards was further strengthened by the comparison results, which showed good agreement between participants preparing independent standards for the exercise (KRISS, NIST and NMi).

Item Type: Report/Guide (NPL Report)
NPL Report No.: AS 29
Keywords: volatile organic compound, VOC, stability, comparison, ozone precursor, hydrocarbons
Subjects: Analytical Science
Analytical Science > Gas Standards
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4306

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