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Vergelijkende buitenluchtmetingen RIVM, GGD Amsterdam en DCMR : Resultaten voor het jaar 2012
[Comparative measurements air quality RIVM, GGD Amsterdam and DCMR : Results for the year 2012]

Hafkenscheid ThL, Stokkermans Y, de Jonge D

30 p in Dutch 2013

RIVM briefrapport 680708016
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Toon Nederlands

English Abstract
Within the frame of the cooperation between the air quality monitoring networks of RIVM, GGD Amsterdam and DCMR Environmental Protection Agency comparative measurements are performed between RIVM and both regional networks at locations in Amsterdam (RIVM-GGD) and Rotterdam (RIVM-DCMR): - Rotterdam: nitrogen dioxide and PM10 at location Bentinckplein/Statenweg. - Amsterdam: nitrogen dioxide and PM10 at location Overtoom

The purpose of these comparisons is demonstrating comparability of results obtained by the different networks. In case of sufficient comparability, mutual use can be made of their results. All networks use the European Union reference methods for nitrogen dioxide and PM10

The evaluation involves comparison of hourly average results for nitrogen dioxide and of daily average results for PM10 by applying orthogonal regression analysis and by examination of differences between results as a function of measurement period and concentration level

Evaluation of the comparisons between RIVM and DCMR for the year 2012 shows that for nitrogen dioxide results averaged over the whole year agree to within 4 per cent. The relationship between the results deviates from the expected relationship y=x (where x-values are results of RIVM): the slope is significantly lower than 1. The relationship is nearly the same as that for the year 2011

Results for PM10 results agree within 3 per cent. RIVM systematically measures 3 per cent lower than DCMR

Evaluation of the comparisons between RIVM and GGD for the year 2012 shows that for nitrogen dioxide results averaged over the whole year to within 2 per cent. The relationship between the results has improved compared to the year 2011: the slope is now close to 1

Results for PM10 results agree within 3 per cent. However, RIVM systematically measures 1 g/m3 higher than GGD. This situation is comparable to that for the year 2011

Evaluation further shows that the resulting measurement uncertainties in all cases are well within the criteria given in EU Directive 2008/50/EC. As all networks have an ISO 17025 accreditation for the measurements compared it may be assumed that the quality levels and, consequently, the comparability of the results determined in these comparisons are representative for the networks as a whole. Consequently, it should be possible for networks to make mutual use of results for the components compared (nitrogen dioxide and PM10)

RIVM - Bilthoven - the Netherlands - www.rivm.nl

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Rapport in het kort
In het kader van de samenwerking tussen de luchtkwaliteits-meetnetten van het RIVM, de GGD Amsterdam en de DCMR Milieudienst Rijnmond vinden sinds enkele jaren tussen RIVM en de beide organisaties vergelijkende metingen plaats op meetlocaties in Amsterdam (RIVM-GGD) en Rotterdam (RIVM-DCMR): - Rotterdam: stikstofdioxide en PM10 op locatie Bentinckplein/Statenweg. - Amsterdam: stikstofdioxide en PM10 op locatie Overtoom

Deze hebben tot doel de vergelijkbaarheid van de resultaten van de verschillende meetinstanties vast te stellen; bij voldoende vergelijkbaarheid kunnen de instanties wederzijds gebruik maken van elkaars resultaten

Evaluatie van de resultaten van de vergelijkingen verricht in 2012 toont aan dat de resulterende meetonzekerheden in alle gevallen voldoen aan de criteria gesteld in EU Richtlijn 2008/50/EC. Aangezien alle instanties een ISO 17025 accreditatie voeren voor de betreffende metingen mag ervan worden uitgegaan dat het kwaliteitsniveau en de vergelijkbaarheid zoals bepaald in deze vergelijkingen representatief zijn voor de andere meetlocaties van de netwerken. Dit impliceert dat de instanties in principe gebruik kunnen maken van elkaars meetgegevens voor de componenten waarvoor resultaten zijn vergeleken (stikstofdioxide en PM10)

RIVM - Bilthoven - Nederland - www.rivm.nl
Rijksinstituut voor Volksgezondheid en Milieu RIVM DCMR Milieudienst Rijnmond Expertisecentrum Lucht GGD Amsterdam Leefomgeving Luchtkwaliteit
( 2013-07-30 )