Aerosol composition, sources, and secondary processing during autumn at a regional site in the Beijing–Tianjin–Hebei region
Source abstract
Abstract
Air pollution is serious during autumn in the Beijing–Tianjin–Hebei (BTH) region, but there are few studies that have utilized real-time observations and source apportionment of the autumn submicron aerosols in this region. In this study, a quadrupole aerosol chemical speciation monitor (Q-ACSM) was deployed for the real-time measurement of the non-refractory compositions of submicron aerosols (NR-PM 1) at a regional site (Xianghe) from October 3 to November 14, 2017. The results showed that nitrate was the largest inorganic aerosol, and the oxygenated organic aerosol (OOA) was the largest organic aerosol in Xianghe. Hydrocarbon-like OA (HOA) was the largest organic aerosol When the NR-PM 1 mass concentrations increased from the lowest to the highest bins, nitrate and biomass burning OA (BBOA) showed increasing trends in the suburban area. Enhanced nitrate formation during the pollution episodes resulted from both photochemical and aqueous processing. To reduce the particulate matter (PM 2.5) concentrations and eliminate heavy pollution episodes, control measures should focus on reducing NO x, NH 3 , and volatile organic compound (VOC s) emissions.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Atmospheric chemistry and aerosols · Air Quality and Health Impacts · Air Quality Monitoring and Forecasting
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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