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A Research on Time Distribution Characteristics of Total Gaseous Mercury in The Atmosphere of Dalian City

Li Mingjin;Dalian Environmental Monitoring Center;  
In order to research the time distribution characteristics of total gaseous mercury in the atmosphere of Dalian city, Lumex RA-915 AM mercury analyzer were used to monitor the total gaseous mercury of Dalian city for one year(2015).The results showed that the annual average value of the total gaseous mercury of Dalian city was 3.72 ng/m~3 in 2015.The descending order on the total gaseous mercury concentration of different season was spring, summer, winter, autumn.The monthly mean maximum value appeared in summer and the daily mean maximum value appeared in spring.The total gaseous mercury concentration in the spring day was significantly higher than that at night,but the summer day was significantly lower than the summer night, and there was no obvious difference between the day and the nigh in the autumn and winter.
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