Side-by-side comparison of field monitoring methods for hot bitumen emission exposures: the German IFA Method 6305, U.S. NIOSH Method 5042, and the Total Organic Matter Method.

Field studies were conducted at paving and roofing site to compare the German In fin Occupational Safety and Health of German Social Accident Insurance (IFA) Fourier transform infrared spectrascopy method 6305 with the National Institute for Occupational Science and Health (NIOSH) benzene soluble fraction method 5042 plus total organic matter Sampling using both methods was perforated in multiple bitumen-related workplace environments 10 provide mum rabic data all samplings were performed in parallel and the analytical data woe related to the same representative bitumen condensate standard An outline of the differences between the sampling and analytical methods is provided along with comparative data obtained from these site investigations A total of 55 bitumen paving sample, pairs were reported and stall vocal comparisons made using the 35 pans of detectable data First the German inhalable aerosol data and the NIOSH benzene soluble fraction (BSF) method showed a cot relation cod:fit lent of R-2 = 0 88 (V-(BSF) = 0 60x((aerosol))) Second the aerosol data compared with total particulate matter (TPM) thou. a R: of 0 83 (V-(TPM) = 1 01 x((aerosol)) Finally total organic matter (TOM) and aerosol + vapor data yielded a R-2 of 0 78 (V-(TOM) = 0 44 x((aerosol+capor))) Twenty nine pan s of tooling data were also collected 37% Here below the limit of detection When comparing the TOM data with the aerosol + vapor data using the 13 of 29 pairs where both samplers showed detectable results the relationship was v((TOM)) = 0 74 X, (R2 = 0 91) The slopes within these equations provided predictive factors between these sampling and analysis methods intended for use with large sets data they are not applicable to single point measurements