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Scaling number concentration measurements from bioaerosol monitors using Hirst-type samplers
The instruments used for routine pollen monitoring are gradually changing from traditional impactors with manual data processing to automated pollen monitors using deterministic and/or machine-learning algorithms for data analysis. This manuscript compares pollen number concentration of Alnus sp., Betula sp., Corylus sp., and Poaceae measured by Hirst-type bioaerosol samplers and the SwisensPoleno automated bioaerosol monitor in Switzerland and Norway. Due to physical particle losses and the classification rate of the algorithms being well below unity, scaling factors had to be applied to the measurements of the SwisensPoleno to match those of the Hirst impactor. These scaling factors depended on the geographic location, i.e. differed significantly between Switzerland and Norway. The importance of adjusting the scaling factors according to the location of the monitoring network and the need for reporting the numerical values of these scaling factors in future scientific publications is emphasized.
2026
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Norwegian Scientific Committee for Food and Environment (VKM)
2019
2008
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2011
2025
School students working as environmental scientists - Global POP - Dioxins in fish with BDS CALUX NILU PP
2009
Schools taking part in a research project investigating dioxins in fish. From pole to pole
2016
Screening 2004 - uppföljningsprojekt. Analys av oktaklorstyren, flyktiga metylsiloxaner, vissa fenoler och endosulfan. IVL Rapport, B1745
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2023
2014
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