Uncertainties in observational data on organic aerosol: An annual perspective of sampling artifacts in Beijing, China.

作者: Yuan Cheng , Ke-bin He

DOI: 10.1016/J.ENVPOL.2015.06.012

关键词:

摘要: Abstract Current understanding of organic aerosol (OA) is challenged by the large gap between simulation results and observational data. Based on six campaigns conducted in a representative mega city China, this study provided an annual perspective uncertainties OA data caused sampling artifacts. Our suggest that for commonly-used approach involves collection particles bare quartz filter, positive artifact could result 20–40 % overestimation concentrations. evaluation framework includes four criteria, activated carbon denuder was demonstrated to be able effectively eliminate with long useful time at least one month, hence it recommended good choice routine measurement carbonaceous aerosol.

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