Atmospheric photolytic reduction of Hg(II) in dry aerosols

doi:10.1039/c3em00249g

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	Atmospheric photolytic reduction of Hg(II) in dry aerosols
	Tong, Yindong ; Eichhorst, Terry ; Olson, Michael R. ; McGinnis, Jerome E. ; Turner, Isabel ; Rutter, Andrew P. ; Shafer, Martin M. ; Wang, Xuejun ; Schauer, James J.
刊名	environmental science processes impacts
	2013
关键词	DISSOLVED GASEOUS MERCURY ELEMENTAL MERCURY GOLD AMALGAMATION DIVALENT MERCURY PHASE CHEMISTRY OXIDATION SPECIATION COMPLEXES REMOVAL
DOI	10.1039/c3em00249g
英文摘要	A laboratory reactor system was developed to examine the role of light and aerosol composition in the reduction of oxidized mercury (Hg(II)) in laboratory-generated aerosols. Aerosolized sodium chloride, doped with mercury chloride, was exposed to light in a fixed-bed flow-through reactor. Three spectral ranges (UV, visible and a simulated solar spectrum) were examined, along with dark experiments, to investigate the role of light conditions in mercury reduction. In addition, the role of iron in the aerosol matrix was examined. The effluent from the reactor was analyzed for Hg(0) as evidence of reduction of Hg(II) in the reactor. Significant reduction of Hg(II) (1.5-9.9%) was observed for all three light sources and the rate of mercury reduction was proportional to the light irradiance. The presence of iron in the aerosol matrix inhibited the reduction rate and the degree of inhibition was dependent on the chemical form of the iron in the aerosol. The observed reduction reactions may be important chemical processes in the atmosphere and could be incorporated in atmospheric transport models that are used to understand the fate of atmospheric mercury.; Chemistry, Analytical; Environmental Sciences; SCI(E); PubMed; 3; ARTICLE; 10; 1883-1888; 15
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/160601]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Tong, Yindong,Eichhorst, Terry,Olson, Michael R.,et al. Atmospheric photolytic reduction of Hg(II) in dry aerosols[J]. environmental science processes impacts,2013.
APA	Tong, Yindong.,Eichhorst, Terry.,Olson, Michael R..,McGinnis, Jerome E..,Turner, Isabel.,...&Schauer, James J..(2013).Atmospheric photolytic reduction of Hg(II) in dry aerosols.environmental science processes impacts.
MLA	Tong, Yindong,et al."Atmospheric photolytic reduction of Hg(II) in dry aerosols".environmental science processes impacts (2013).