Overall Performance Evaluation of Aerosol Number Samplers
A statistical term, one standard error shift (OSES) was used in a previous study to combine the sampling bias and imprecision. The bias and imprecision could be for aerosol number, aerosol mass, or even surface area. In this work, an additional step was taken by introducing another statistical term, maximum sampling shift (MSS), to further combine the OSES with the counting imprecision. For the surrogate sampler tested, the particle counting imprecision increased with increasing particle diameter and decreased with increasing geometric standard deviation. The particle counting imprecision was comparable with the OSES, and the resultant MSS map was actually the summation of imprecision and OSES.
Document Type: Research Article
Affiliations: 1: Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan 2: Institute of Statistical Science, Academia Sinica, Taipei, Taiwan 3: Institute of Occupational Safety and Health, Council of Labor Affairs, Taipei, Taiwan
Publication date: 2002-01-01