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Abstract As the widespread application of online instruments in atmospheric monitoring, an increasing number of studies such as source apportionment researches are based on the high-resolution online monitoring data. Accurate… Click to show full abstract
Abstract As the widespread application of online instruments in atmospheric monitoring, an increasing number of studies such as source apportionment researches are based on the high-resolution online monitoring data. Accurate online monitoring data are very critical in the model evaluation as well. However, there is a very limited number of comparison studies investigating the quality of online monitoring data compared to the traditional offline filter-based data. In this study, two high-time resolved instruments, including In-situ Gas and Aerosol Composition and Xact, were applied to measure the water-soluble inorganic ions (WSIIs) and trace elements in PM2.5, respectively, in Beijing during winter 2015. These online results were then compared with corresponding offline filter-based measurement for 8 ions and 13 trace elements. Good agreement (R2 > 0.8, 0.8
Journal Title: Atmospheric Pollution Research
Year Published: 2019
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