Aerosol and Air Quality Research, Год журнала: 2024, Номер 24(8), С. 240024 - 240024

Опубликована: Янв. 1, 2024

Black carbon (BC) concentrations and potential source regions were analyzed for nine cities in the Yellow River Basin Shandong Province from September 2021 to August 2022. Higher BC found Jinan, Tai'an, Jining, Dezhou, situated central part of study area. concentration exhibited highest values winter, followed by autumn, spring summer all excluding Jinan. The monthly average Jinan ranged 0.69 3.92 μg m-3. a pronounced diurnal variation, which decreased morning peak afternoon. analysis related pollutants revealed that shared similar sources with PM2.5 CO, influenced distribution surrounding high-energy-consuming industries. exhibits correlation 0.51 0.56 SO2 NO2 summer, indicating is more affected traffic emissions compared industrial High associated poor diffusion conditions due terrain meteorology. may contribute high land surface temperature (LST) during summer. backward trajectory showed area varied considerably different seasons. In winter mainly came local emissions. While regional transport had equal contribution as emissions, cannot be ignored. findings provide insights protecting atmospheric environment promoting high-quality development

Язык: Английский