DOI: 10.1016/j.atmosenv.2020.117623
论文题名: Fractionation of mercury in aerosols of the southern Baltic coastal zone
作者: Korejwo E. ; Saniewska D. ; Bełdowska M.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 235 语种: 英语
英文关键词: Aerosols
; Bioactivity
; Coastal zones
; Fossil fuels
; Sulfur compounds
; Thermal desorption
; Complete information
; Gaseous mercury
; Mercury fractionation
; Mercury speciations
; Organic mercury
; Reactive gaseous mercury
; Total mercuries
; Total particulate mercury
; Mercury compounds
; fossil fuel
; halide
; mercuric nitrate
; mercury
; mercury derivative
; mercury sulfide
; methylmercury
; organomercury compound
; aerosol
; coastal zone
; fractionation
; mercury (element)
; pollutant source
; speciation (chemistry)
; temporal variation
; toxicity
; aerosol
; Article
; autumn
; Baltic Sea
; coastal waters
; desorption
; fractionation
; particulate matter
; Poland
; priority journal
; seasonal variation
; spring
; summer
; winter
; Atlantic Ocean
; Baltic Sea
; Gdynia
; Poland [Central Europe]
; Pomorskie
学科: Fractionation
; Particulate matter
; Particulate mercury
; Reactive mercury
; RM
; Thermal desorption
; TPM
中文摘要: The form in which Hg occurs in the atmosphere is important to understand the toxicity and bioavailability of this metal. So far, research on mercury speciation in the atmosphere has mostly focused on its three forms: elemental gaseous mercury (GEM/Hg0), reactive gaseous mercury (GOM/Hg2+) and mercury bound in aerosols (TPM). However, these studies do not provide complete information on mercury compounds in aerosols. Only a few publications on mercury fractionation in TPM have been published, but these have focused mainly on describing the method and have provided only a limited number of environmental results. Therefore, the research aimed to identify forms of mercury occurring in aerosols in the coastal zone of the southern Baltic Sea, as well as to determine factors affecting the temporal changes in the share of individual Hg fractions. Aerosol samples were collected in Gdynia (Poland) from May 2016 to January 2017. A thermo-desorption technique was used for the determination of total mercury and Hg fractions. Mercury in aerosols was present mainly in labile factions related to mercury halides, mercury nitrate and organic mercury as well as gaseous mercury. The stable Hg fraction, mainly bound to Hg sulphide, constituted only 7% of total particulate mercury. The conducted research also allowed to determine the origin of mercury sources in aerosols. In the winter it was burning of fossil fuels, and in the summer biological activity and emission from the sea. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160709
Appears in Collections: 气候变化与战略
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作者单位: University of Gdansk, Faculty of Oceanography and Geography, Division of Marine Chemistry and Environmental Protection, Al. Piłsudskiego 46, Gdynia, 81-378, Poland; Institute of Oceanology, Polish Academy of Sciences, ul. Powstańców Warszawy 55, Sopot, 81-712, Poland
Recommended Citation:
Korejwo E.,Saniewska D.,Bełdowska M.. Fractionation of mercury in aerosols of the southern Baltic coastal zone[J]. Atmospheric Environment,2020-01-01,235