Format:
6
ISSN:
1654-7209
Content:
The geogenic background load via wet deposition is estimated for As, Cd, Co, Cr, Cu, Hg, Ni, Pb and Zn, while the total atmospheric deposition in the 1990s was quantified to excel the background by 5 to more than 20-fold. The element input via rivers is separated in a geogenic and an anthropogenic part with a rather heterogeneous distribution. The total river input (including diffuse sources) is estimated to be for As 200, Cd 60, Co 200, Cr 440, Cu 1300, Hg 50, Ni 300, Pb 1500 and Zn 6000 (t yr-1). The highest load comes from tributaries in Poland and the Baltic countries. While the existing monitoring networks do a very good job quantifying components like N and S, major inaccuracies arise from an insufficient database for atmospheric inputs over the open sea. In addition, detailed knowledge on precipitation dynamics is missing. Similar inadequacies arise with fluvial inputs - both dissolved and particulate.
Note:
Gesehen am 24.11.2022
In:
Ambio, [Dordrecht] : Springer Netherlands, 1972, 26(1997), 6, Seite 363-368, 1654-7209
In:
volume:26
In:
year:1997
In:
number:6
In:
pages:363-368
In:
extent:6
Language:
English
URL:
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