engleski

The need for equivalence for PM samplers

We performed equivalence testing by comparing mass concentrations of PM10 particle fraction measured by β-attenuation and by gravimetric method. Samples were collected during the period 1 January 2010 - 31 December 2011. The comparison was performed between gravimetric method described in EN12341 on a non-referent sampler (HVC Digitel HD-80) and an automatic analyzer (ESM ANDERSEN FH 61 IR). Results were analyzed using a computer spreadsheet, "Orthogonal regression and the test equivalence Utility v.2.8" developed at the RIVM (Dutch Institute for Public Health and the Environment, Dep. Centre for Environment Monitoring). Annual correction of results shows a satisfactory degree of equivalence for year 2010, but not for 2011. Seasonal correction meets the requirement of equivalence of the results for both years of measurement.

PM10; correction factors; Utility v.2.8

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