Accuracy in measurements using diffusive samplers.
Proceedings of the International Conference Measuring Air Pollutants by Diffusive Sampling, September 26-28, 2001, Montpellier, France. Brown RH, Hafkenscheid TL, Saunders KJ, Borowiak A, Saeger ED, eds. European Commission, 2001 Sep; :99-107
Performance tests for evaluating diffusive samplers have been set up so as to permit the evaluation of a large number of sampler/analytes. Experimentation has been minimized by omitting re-evaluation of the exposure chamber at each sampler evaluation. Furthermore, a single figure of merit, the symmetric-range accuracy, is obtained for each sampler/analyte by combining measured sampler environmental sensitivity with a set of nominal environmental characteristics selected with the expected application in mind. The result is a means of deciding sampler suitability by selecting a value for acceptable accuracy. Also, confidence intervals containing measurand concentrations at probability > 95% may be obtained at given confidence (e.g., 95%) in the performance evaluation. A pilot test of the performance protocol is described.
Diffusion-analysis; Samplers; Sampling; Sampling-methods; Environmental-factors;
Author Keywords: precision; systematic deviation; reverse diffusion; influence parameters; confidence; tolerance
David L. Bartley, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 4676 Columbia Parkway R-3, Cincinnati, OH 45226
Brown-RH; Hafkenscheid-TL; Saunders-KJ; Borowiak-A; Saeger-ED
Research Tools and Approaches; Exposure Assessment Methods
Proceedings of the International Conference Measuring Air Pollutants by Diffusive Sampling