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For the implementation of the EC Directive Nr.779/80/EEC on SO(2) and suspended particulates, reference materials have been prepared and circulated by JRC Ispra for an intercomparison of calibration methods and procedures. By means of a mobile laboratory, equipped with comparison instruments, parallel measurements have been performed in the networks. These instruments, also used for the measurement of the reference materials, were calibrated and operated according to the revised reference methods of the Directive. The crosschecks have been discussed in relation to an arbitrary band of +/- 10 microg/m3 +/- 10% of the comparison instrument results. Inadequate sampling and a wrong or incomplete application of the revised reference methods seem to be the main causes of the deviations.

Additional information

Authors: PAYRISSAT M, JRC Ispra (IT)
Bibliographic Reference: Paper presented: Journées Nationales Pollution de l'Air, Montpellier (FR), Nov. 15-17, 1989
Availability: Available from (1) as Paper EN 35124 ORA
Record Number: 199010917 / Last updated on: 1994-12-01
Original language: en
Available languages: en
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