Articles | Volume 8, issue 7
https://doi.org/10.5194/amt-8-2639-2015
https://doi.org/10.5194/amt-8-2639-2015
Research article
 | 
01 Jul 2015
Research article |  | 01 Jul 2015

Measurement of carbonaceous aerosol with different sampling configurations and frequencies

Y. Cheng and K.-B. He

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Short summary
We measure carbonaceous aerosol in Beijing with different sampling configurations and frequencies. It is commonly believed that increasing sampling duration can reduce the influence of the positive sampling artifact and meanwhile does not affect the EC measurement. However, here we demonstrate that this is not necessarily the case. Particularly, we find that the negative sampling artifact of a bare quartz filter could be remarkably enhanced due to the uptake of water vapor by the filter medium.