Determination of the size of airborne flour particles

Authors

  • C. P. Sandiford,

    Corresponding author
    1. Department of Occupational and Environmental Medicine, National Heart and Lung Institute, Royal Brompton National Heart and Lung Hospital, London, UK
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  • M. J. Nieuwenhuijsen,

    1. Department of Occupational and Environmental Medicine, National Heart and Lung Institute, Royal Brompton National Heart and Lung Hospital, London, UK
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  • R. D. Tee,

    1. Department of Occupational and Environmental Medicine, National Heart and Lung Institute, Royal Brompton National Heart and Lung Hospital, London, UK
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  • A. J. Newman Taylor

    1. Department of Occupational and Environmental Medicine, National Heart and Lung Institute, Royal Brompton National Heart and Lung Hospital, London, UK
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Mr C. Sandiford Department of Occupational and Environmental Medicine National Heart and Lung Institute 1B Manresa Road London SW3 6LR UK

Abstract

Air sampling was done in a UK bakery and a flour mill with an eight-stage cascade impactor to determine the size of airborne flour particles. The concentration of captured material was determined by a competitive inhibition radioimmunoassay. Comparison of the different sites revealed that 8.79% and 52.14% of the particles in the bakery dough-brake and roll-production areas had a diameter leqslant R: less-than-or-eq, slant6.0 μm, respectively, and 19.7% of the particles in the flour mill packing area were of this size. We conclude that in dusty areas up to 20% of the airborne flour particles are of a diameter likely to allow them to be deposited in the bronchial airways and alveoli.

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