THE APPLICATION OF A VALIDATION PROTOCOL TO A COLORIMETRIC DIFFUSIVE SAMPLER

Citation
Mi. Pengelly et al., THE APPLICATION OF A VALIDATION PROTOCOL TO A COLORIMETRIC DIFFUSIVE SAMPLER, The Annals of occupational hygiene, 38(2), 1994, pp. 161-170
Citations number
12
Categorie Soggetti
Toxicology,"Public, Environmental & Occupation Heath
ISSN journal
00034878
Volume
38
Issue
2
Year of publication
1994
Pages
161 - 170
Database
ISI
SICI code
0003-4878(1994)38:2<161:TAOAVP>2.0.ZU;2-X
Abstract
A validation protocol has been developed by the Comite Europeen de Nor malisation (CEN) in order to provide a standard evaluation procedure f or the many new and existing diffusive sampling systems available for determination of gases or vapours in workplace atmospheres. This study reports the application of that protocol to a commercially available colorimetric diffusive sampling device for acetone. The chosen samplin g system was subjected to a series of standard experiments outlined in the CEN protocol to determine the effects of face velocity, exposure time, pollutant concentration, air temperature and relative humidity o n sampler performance. Additional non-standard experiments were also c arried out to determine the effects of periods of zero pollutant conce ntration during sampling. The results of both standard and non-standar d experiments have been used to calculate figures for the bias of the sampling method and its overall relative uncertainty. Overall, it was concluded that, with some modifications, the CEN protocol can be succe ssfully applied to validating this type of colorimetric diffusive samp ling device.