We investigate the suitability of ELPI for conden- sation sink and ion sink measurements. The aim is to find the simple calibration factors by which the measured ELPI cur- rent can be converted to condensation or ion sinks. The cal- ibration is based on DMPS and ELPI measurements within the period 15–25 May 2005 at a boreal forest site in Southern Finland. The values of condensation sink and ion sink were calculated from the DMPS size distributions using their the- oretical definitions. After that the values were compared to theoretical and measured ELPI current, and calibration fac- tors were specified. For condensation sink the calibration factor was found to be 7.27E-06 s−1fA−1 and for ion sink 8.55E-06 s−1fA−1. Simply by multiplying the total current of the outdoor ELPI by these factors, the values of conden- sation sink and ion sink can be measured.
Kuuluvainen, H., Kannosto, J., Virtanen, A., Másigná, J. M., Kulmala, M., Aalto, P., & Keskinen, J. (2010). Technical Note: Measuring condensation sink and ion sink of atmospheric aerosols with the electrical low pressure impactor (ELPI). Atmospheric Chemistry and Physics, 10(3), 1361–1368. https://doi.org/10.5194/acp-10-1361-2010