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A Research on "Coal to Gas" Effects on Air Quality Improvement in Tianjin

Meng Qinghuan;Tianjin Hedong District Environmental Protection Monitoring Station;  
Coal heating is one of the urban pollution sources.On the basis of air quality data in Hedong District, Tianjin, by comparing SO_2, CO, NO_2, NO, particulate matter(PM10) and other related pollutants concentration value during the heating period in 2015—2016 with that in three years, through calculating the atmosphere pollutant concentration period, it is concluded that the implementation of "Coal to Gas" has improved the air quality in Hedong district obviously, with ordering:SO_2NOPM_(10)CONO_2, which has provided theoretical support for subsequent environmental improvement work.
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