[Atmospheric particulate mercury concentration in Changchun City and its dry deposition flux].
From July 1999 to January 2000, the particulate mercury(Hg(p)) concentration of five function sites and one contrast site were determined. In non-heating time, the particulate mercury concentration in urban atmosphere ranged from 0.022 to 0.398 ng.m-3 with an average of 0.145 ng.m-3 and the contrast site with an average of 0.084 ng.m-3. In heating time, the Hg(p) concentration in urban was in the range of 0.148-1.984 ng.m-3 with an average of 0.461 ng.m-3 and with an average of 0.211 ng.m-3 in the contrast site. The Hg(p) concentration in heating time was two times higher than that of non-heating time. Coal fire and wind-blown soil material were the two important sources of Hg(p). Wind-blown soil material contributed 7.9%-38.5% of the Hg(p) with an average of 24.1% in urban. Use theory model to estimate the dry deposition flux with the results of 43.06 micrograms.(m2.a)-1 in urban and 21.28 micrograms.(m2.a)-1 in the contrast site.
Fang
F
F
Changchun Institute of Geography, Chinese Academy of Sciences, Changchun 130021, China.
Wang
Q
Q
Li
D
D
Zhao
G
G
Wang
L
L
D000393:Air Pollutants / Q000032:analysis*; D008628:Mercury / Q000032:analysis*; D012621:Seasons
D000393:Air Pollutants; D008628:Mercury