The King’s College London Volatile Correction Model for PM10 report, undertaken for Defra, has been released on the Defra Air Quality site.

This report details the derivation, testing and application of a model to correct measurements of PM10 by the TEOM such that they can be used to measure PM10 for assessment against the EU Limit Value in the UK.

This extensive study was based on analysis of daily mean measurements of PM10 by FDMS and TEOM at sites in the UK Equivalence Programme and at sites in the LAQN.

The model used the FDMS purge measurement to correct for differences in the sensitivity to volatile PM10 between the TEOM and the EU reference method.

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Item date 11/12/2007