DOI: 10.1002/2014GB005060
Scopus记录号: 2-s2.0-84947130004
论文题名: Metals and metalloids in precipitation collected during CHINARE campaign from Shanghai, China, to Zhongshan Station, Antarctica: Spatial variability and source identification
作者: Shi G ; , Teng J ; , Ma H ; , Li Y ; , Sun B
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 6 起始页码: 760
结束页码: 774
语种: 英语
英文关键词: metal
; metalloid
; ocean
; precipitation
; source
Scopus关键词: coastal zone
; concentration (composition)
; marine environment
; metal
; pollutant source
; precipitation (chemistry)
; sea salt
; spatial variation
; trace element
; Antarctica
; Antarctica
; China
; East Antarctica
; Indian Ocean
; Indian Ocean (South)
; Shanghai
; Zhongshan Station
; Vindula arsinoe
英文摘要: Metals and metalloids in continental precipitation have been widely observed, but the data over open oceans are still very limited. Investigation of metals and metalloids in marine precipitation is of great significance to understand global transport of these elements in the atmosphere and their input fluxes to the oceans. So shipboard sampling of precipitation was conducted during a Chinese National Antarctic Research Expedition campaign from Shanghai, China, to Zhongshan Station, East Antarctica, and 22 samples (including 17 rainfall and 5 snowfall events) were collected and analyzed for concentrations of Pb, Ni, Cr, Cu, Co, Hg, As, Cd, Sb, Se, Zn, Mn, and Ti. Results show that concentrations of both metals and metalloids vary considerably along the cruise, with higher concentrations at coastal sites and lower values on the south Indian Ocean. Although only soluble fractions were determined for elements, concentrations in this study are generally comparable to the reported values of marine rain. Enrichment factor analysis shows that most of metals and metalloids are enriched versus crustal sources, even in the samples collected from remote south Indian Ocean. In addition, metals and metalloids in precipitation are also very enriched above sea-salt abundance, indicating that impacts of sea-salt aerosols on their concentrations are negligible. Main sources of metals and metalloids were explored with the aid of multivariate statistical analyses. The results show that human emissions have far-reaching distribution, which may exert an important influence on the solubility of elements in precipitation. This investigation provides valuable information on spatial variation and possible sources of trace elements in precipitation over the open oceans corresponding to understudied region. © 2015. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78015
Appears in Collections: 气候变化事实与影响
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作者单位: SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai, China; Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI, United States; Shanghai Chongming Dongtan National Nature Reserve, Shanghai, China
Recommended Citation:
Shi G,, Teng J,, Ma H,et al. Metals and metalloids in precipitation collected during CHINARE campaign from Shanghai, China, to Zhongshan Station, Antarctica: Spatial variability and source identification[J]. Global Biogeochemical Cycles,2015-01-01,29(6)