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SO2 IN AIR

Objective



Community Directive 80/779/EEC specifies maximum permissible levels of sulphur dioxide in the ambient air.
Intercomparisons organized by DG XI in support of the implementation of this Directive have shown differences in excess of 10 % between central laboratories and in excess of 30 % between network monitors. The aim of the project was to improve the analytical technique and agreement between results.

STATUS

In the first intercomparison the values obtained ranged from 78 to 94 nmol/mol. In the final stage the sampling procedure had been improved (dead volume minimised, length of sampling line minimised, sufficient equilibration time). All laboratories agreed to within a range of 4 nmol/mol.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

L'Air Liquide Belge
Address

Schelle
Belgium

Participants (9)

BOC Ltd
United Kingdom
Address
24 Deer Park Road
SW19 3UF London
Bundesgesundheitsamt
Germany
Address
Corrensplatz 1
14195 Berlin
European Communities - Commission of the European Communities - Joint Research Centre (JRC)
Italy
Address
Via E. Fermi 1
21020 Ispra
LABORATOIRE NATIONAL D'ESSAIS
France
Address
Rue Gaston Boissier 1
75724 Paris
Messer-Griesheim GmbH
Germany
Address

Duisburg
Risoe National Laboratory
Denmark
Address

Roskilde
SOCIETA ITALIANA ACETILENE E DERIVATI SPA
Italy
Address
Via San Bernardino 92
Bergamo
UMWELTBUNDESAMT
Germany
Address
Bismarckplatz 1
14191 Berlin
Van Swinden Laboratorium
Netherlands
Address

Delft