Determination of biological air pollutants - Comparison and evaluation of efficiency of bioaerosol samplers in dependence of cut-off-(d(50))-values

Five different bacterial and fungal aerosols were tested in a vertically ar ranged bioaerosol test sequence to determine the accumulation capacity of a slit impactor (FH2, Loreco Reckert). The capacity values (cut-of value and d(50)-value) were ascertained by weighted aerodynamic germ diameters and c orresponding accumulation capacities. For this purpose, two different metho ds (quantitative culture method and particle determination method) were app lied. Both methods resulted in a cut-off value for the FH, impactor of appr ox. 1.1 mu m. Capacity values (cut-off values) were determined for air germ collectors with a maximum suction pow of 3 m(3)/h by employing the bioaero sol test sequence. The accumulation capacity can be assessed either by mean s of the culture method, or the particle determination method, and cut-off values can be used to compare biogenous air pollution concentrations of var ious enrichment procedures.