Analysis of photochemical pollution potential characteristics based on PAN observation in the border area of Jiangsu,Anhui,Shandong and Henan
In order to explore the potential of photochemical pollution in the regions of Jiangsu,Anhui,Shandong and Henan,the online monitoring of peroxyacetyl nitrate(PAN),a product of photochemical pollution,was carried out in Huaibei City in October 2021 and June 2022,and the concentration characteristics,spatial sources,production rate and change trend of PAN were analyzed.The observation results show that the concentration range of PAN at the observation site is(0.08-1.44)× 10-9 in October 2021 and(0.61-5.72)× 10-9 in June 2022.Most of the peak of PAN appeared in the period of low NO/NO2 ratio.In combination with the backward trajectory of the air mass,the high value range of the potential source contribution function(PSCF)of PAN at the observation site in October 2021 appears in the south,which may be due to the higher precursor emissions in the cities near the southwest.In June 2022,the high value areas mainly appeared in the north and southeast,indicating that the southwest of Shandong Province is a potential source contribution area,and the air mass in the southeast has long distance transportation between the urban agglomerations with a high degree of industrialization.
PANphotochemical pollution potentialthe Border Area of JiangsuAnhuiShandong and Henanonline monitoring
NETL
NSTL
万方数据
