Ann. occup. Hyg., Vol. 42, No. 7, pp. 477-488, 1998
© 1998 British Occupational Hygiene Society
Published by Oxford University Press
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Comparison of Methods for Monitoring Solid Particulate Surface Contamination in the Workplace
Health and safety Laboratory Broad Lane, Sheffield S3 7HQ, U.K.
*Author to whom correspondence should be addressed. Tel.: +44(0)114 2892700; Fax: +44(0)114 2892732, E-mail: JWheeler{at}dust.demon.co.uk
This paper reports an assessment of various methods for sampling participate surface contamination for use in the field. The results from the study will be used to develop guidance for monitoring participate surface contamination in the workplace. Three types of adhesive tape, two manual and two ‘semi-automatic’ wipe methods, and one Smair method were assessed. A field assessment of selected methods was carried out in two stages. In stage one, the manual wipes, semi-automatic wipes and adhesive tape (Scotch Tape®) were compared. In stage two, the adhesive tape (Scotch Tape®), black forensic tape, clear forensic tape and Smair were compared. Visits were made to ten metal processing facilities and participate contamination was sampled from six locations at each site. Sampling locations were chosen for their potential as points of worker dermal contact and also to represent a range of surface characteristics. The metal content of the samples were analysed using Atomic Absorption Spectrophotometry (AAS) and X-ray Fluorescence Spectro-metry (XRF). It was found that the Smair method proved to be inefficient in removing surface contamination, particularly where the surface was damp or greasy. Tape methods were found to be the most satisfactory and have considerably greater efficiency than wipe sampling. The black forensic tape is the preferred sampling medium as it is highly efficient, reproducible and easy to use. Crown Copyright © 1998 Published by Elsevier Science Ltd on behalf of British Occupational Hygiene Society.
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