Community Research and Development Information Service - CORDIS

Abstract

Five European expert laboratories participated in the inter-comparison of NO2 reference calibration methods organised at the Joint Research Centre in Ispra in the context of harmonisation of NO(2) calibration procedures. The scope of this study was to compare the Saltzman method and three other reference methods for the determination of NO(2) and in current use in EU countries. The study was undertaken after large differences became evident between the Saltzman method and other calibration methods during European inter-comparisons of NO(2) calibration methods organised in Essen (1992) and in Ispra (1993).

During the present inter-comparison, differences of between 2% and 7% were observed between the Saltzman method implemented by 2 laboratories and 3 other reference calibration methods implemented by 3 other laboratories. This study confirms the validity of the NO(2) reference calibration method proposed by the EU directive and shows the good agreement of this method with the static volumetric/GPT method and the ultraviolet (UV) photometry/GPT method. The study also questions the use of the Saltzman method as a primary reference method for the calibration of NO(2) measurements. .

Additional information

Authors: NORIEGA GUERRA A, JRC Ispra (IT);GERBOLÈS M, JRC Ispra (IT);DE SAEGER E, JRC Ispra (IT);GERBOLES M, JRC Ispra (IT)
Bibliographic Reference: EUR 17337 EN (1997) 54pp., FS, free of charge
Availability: Available from the Public Relations and Publications Unit, JRC Ispra, I-21020 Ispra (IT), Fax: +39-332-785818
Record Number: 199711136 / Last updated on: 1997-09-16
Category: PUBLICATION
Original language: en
Available languages: en