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Abstract

The objective of this study is the evaluation of the extent of differences between NO{2} measurements performed by diffusive samplers and NO{2} measurements performed using the chemiluminescence method under extreme conditions of influencing factors and according to the EN protocol of validation of diffusive samplers.

In recent years, many diffusive sampler designs have been developed and implemented for the determination of NO{2} in ambient air (tube-type sampler, badge-type sampler and radial sampler). Ten leading European laboratories were invited to participate. The whole range of diffusive samplers commercially available on the market was included in the study.

The inter-comparison consisted of laboratory and field experiments. The laboratory tests took place in the exposure chamber developed by ERLAP , which can control the exposure environment while ensuring consistent conditions for all the samplers. The field experiments were carried out at two monitoring stations of the AIRPARIF monitoring network.

The results of the laboratory experiments showed that most of the diffusive samplers were affected by extreme exposure conditions. The field tests showed better agreement between the reference value and the samplers than the laboratory tests. The correction of the uptake rate according to the conditions of the experiment using a model equation gave an improved agreement between the diffusive sampler and the reference method.

Additional information

Authors: BUZICA D, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Emissions and Health Unit, Ispra (IT);GERBOLES M, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Emissions and Health Unit, Ispra (IT);AMANTINI L, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Emissions and Health Unit, Ispra (IT)
Bibliographic Reference: EUR 20860 EN (2003), 27pp. Free of charge
Availability: Available from European Commission, JRC Knowledge Management Unit, Ispra (IT) Tel: +39 033278 9843 or +39 033278 9864 Fax: +39 033278 9623 E-mail: jrc-publications-office@ec.europa.eu
Record Number: 200317222 / Last updated on: 2003-12-19
Category: PUBLICATION
Original language: en
Available languages: en
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