title: Fluxes, variability and sources of cadmium, lead, arsenic and mercury in dry atmospheric depositions in urban, suburban and rural areas.
abstract: In China's largest city, Shanghai, dry deposition fluxes of Cd, Pb, As and Hg were 137, 19354, 2897 and 9.4 μgm(-2)a(-1), respectively in an urban area, intermediate in a suburban area, and 51.7, 5311, 1703 and 7.3 μgm(-2)a(-1), respectively in a rural area. Enrichment factors were Cd>Pb>As>Hg. Seasonal variations of metals differed: Pb and As were dominated by fossil fuel combustion, Cd was related to industrial pollution, and natural source controlled Hg levels.
authors.affiliation: Polar Research Institute of China, Shanghai 200136, China. gt_shi@163.com
authors.forename: G
authors.initials: G
authors.lastname: Shi
authors.forename: Z
authors.initials: Z
authors.lastname: Chen
authors.forename: J
authors.initials: J
authors.lastname: Teng
authors.forename: C
authors.initials: C
authors.lastname: Bi
authors.forename: D
authors.initials: D
authors.lastname: Zhou
authors.forename: C
authors.initials: C
authors.lastname: Sun
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: S
authors.initials: S
authors.lastname: Xu
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000032:analysis; D001151:Arsenic / Q000032:analysis*; D002104:Cadmium / Q000032:analysis; D002681:China; D002947:Cities; D004784:Environmental Monitoring; D007854:Lead / Q000032:analysis; D008628:Mercury / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis*; D015999:Multivariate Analysis; D052638:Particulate Matter / Q000032:analysis / Q000737:chemistry*; D012621:Seasons; D013052:Spectrometry, X-Ray Emission; D013054:Spectrophotometry, Atomic
chemical_list: D000393:Air Pollutants; D019216:Metals, Heavy; D052638:Particulate Matter; D002104:Cadmium; D007854:Lead; D008628:Mercury; D001151:Arsenic