The brickfields in the Marston Vale of Bedfordshire and surrounding areas account for almost half of the UK brick production. Consequently the region contributes to significant emission of fluorides to atmosphere. Previous data left much uncertainty about the accuracy of the results and whether they gave a true picture of air quality. The setting up of a spatially extensive programme for atmospheric fluorides is described, together with the quality assurance procedures essential for producing reliable data. A brief indication of air quality data is presented.
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