[Ozone Formation and Key VOCs of a Continuous Summertime O Pollution Event in Ji'nan].

In the summer of 2019, field measurements of ozone (O) and its precursors[volatile organic compounds (VOCs) and nitrogen oxides (NO)] were carried out at an urban site in Ji'nan. We found that the daily maximum 8-hour averages (O) were (103.0±14.

[Source Apportionment of Ozone Pollution in Guangzhou: Case Study with the Application of Lagrangian Photochemical Trajectory Model].

A six-day ozone pollution episode in Guangzhou in early October 2018 was analyzed with the application of a Lagrangian photochemical trajectory model to trace the sources of ozone, quantify the contributions of different regions, and evaluate the effects of emission reduction measures targeted at different emission sectors and different precursors on ozone pollution. The results showed that during the ozone pollution episode, the maximum daily 8 h ozone exceeded 160 μg·m and the highest value reached 271 μg·m. The average concentrations of nitrogen oxides and volatile organic compounds (VOCs) were (77.

[Concentration distribution of metal elements in atmospheric aerosol under different weather conditions in Qingdao Coastal Region].

To know the influence of different weather conditions on the concentration of metal elements in aerosols in the coastal region, total suspended particles (TSP) samples were collected from April to May 2012, and August 2012 to March 2013 in the Qingdao coastal region, and common trace metals were analyzed by using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES). The results showed that Al, Ca, Fe, Na, K and Mg were the dominant metal elements in TSP, and the sum of the six elements accounted for 94.2% of the sum of all metals.