Articles | Volume 10, issue 7
Atmos. Meas. Tech., 10, 2477–2484, 2017
https://doi.org/10.5194/amt-10-2477-2017
Atmos. Meas. Tech., 10, 2477–2484, 2017
https://doi.org/10.5194/amt-10-2477-2017

Research article 13 Jul 2017

Research article | 13 Jul 2017

Bias caused by water adsorption in hourly PM measurements

Gyula Kiss et al.

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Short summary
As a result of multiple efforts the PM10 mass concentration has been reduced in many developed countries in the past 2 decades. However, as the PM10 mass concentrations are decreasing, the potential relative bias caused by water interactions is likely becoming more significant. This is simply due to the fact that the bias caused by adsorption or desorption of water on and from the filter medium becomes proportionally more significant relative to the aerosol mass deposited on the filter.