Preliminary analysis of pollution characteristics and sources in a typical city in Jiangsu Province

The distribution of pollutants in 13 cities in Jiangsu Province in the winter of 2014 was analyzed. It was found that there were more haze days in Nanjing and Xuzhou and the concentration of PM10 and PM2.5 exceeded the national standard 38.9% and 42.2% respectively in the Nanjing, 51.1% and 55.6% respectively in Xuzhou. Nanjing and Xuzhou are affected by both local and external sources. The southward airflow is easy to accumulate pollution in Nanjing and Xuzhou, while the northeastern airflow and precipitation are favorable for the removal of pollutants. Large, and Nanjing area by local and external sources of common influence.