AIMS AND EXPERIENCES OF THE EC COMMISSION FOR THE HARMONISATION OF MEASURING METHODS IN AIR QUALITY CONTROL
The paper describes the actions undertaken by the EC Commission for the maintenance of air quality standards defined in the ED Directives. For the harmonization of the measurements carried out in laboratory and survey networks of the member states, quality assurance programmes have been launched. Results obtained in the framework of the EC Director 799/80/CEE on SO2, Bmack Smoke (BS) and Total Suspended Particulate (TSP) have been compared. Calibration and measuring methods have been compared to the reference methods laid down in the EC Directive by the use of stable reference standards: air-SO2 mixtures and total acidity solutions at low SO2 concentrations, BS and TSP filters at different darkness level and load. For SO2, the deviations were caused by inappropriate handling of the calibration and sampling rather than by possible shortcomings of the different methods themselves. In contrast, for BS, largest deviations were caused by differences from state to state in configurations of filter/reflectometer and the conversion curves. For TSP the deviations were caused by variations in the conditioning procedures before weighing. To avoid any discriminatory stringency, more stringent reference methods are being proposed in an updated version of the Directive.
Bibliographic Reference: AIMS AND EXPERIENCE OF THE EC COMMISSION FOR THE HARMONISATION OF MEASURING METHODS IN AIR QUALITY CONTROL, ROMA, NOV. 24, 1987, AVAILABILITY: CEC-LUXEMBOURG, DG XIII/A2, BP 1907, MENTIONING PAPER ORA 33765 E
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Record Number: 1989126064100 / Last updated on: 1989-05-01
Available languages: en