| 英文摘要 |
The project implemented from April 1, 2015 to March 31, 2016. Major completed works include manual monitoring and sampling of PM, air quality modeling analysis, air quality current situation analysis of PM2.5.
PM2.5 sampling analysis of high pollutant season ( from December, 2015 to January, 2016 ) showed that the raise reason of PM2.5 concentration included the prevailing wind direction is northeast wind and north wind, the pollutant of neighboring regions (such as Fujian ) is taken by southbound front, and local atmospheric diffusion is poor. By the chemical composition, the major pollutants are NH4+, NO3- , SO42- and other derivative aerosol (35%~45%); the second pollutants are carbon components (18.7%~24.5%); proportion of remnant pollutants is nearly 30%.
Air quality modeling analysis of the domestic and foreign pollution sources showed that Kinmen PM2.5 annual average concentration (4 months) significantly affected by the impact of foreign transfer (86%), and domestic (Taiwan, Penghu, Kinmen and Matsu) emissions is about 14%. Influence result of domestic pollution source for Kinmen showed that area sources significantly affected (13.5%), domestic emission by other country is second (1.4%), influence of point sources and line sources is very small (0.5-0.6%).
PM2.5 monitoring data of manual station showed that annual average value of 2015 is lower than 2013 and 2014. Apart from Taoyuan, Kaohsiung and Matsu, 24 hours value of all the city of 2015 are lower than 2014. According to historical statistical data showed that peak of pollution occurs in every November, which still cannot ignore, and our county should focus on tracking and control in winter and spring.
|