Geoscience Reference
In-Depth Information
a
1.5
b
1.4
2000
1.3
1980
206
Pb/
207
Pb
1.2
1960
Pollution Pb
40
1940
30
White Rock Lake
Lake Anne
Lake Harding
1920
20
1900
100
10
20
40
60
120
140
160
0
80
Pb concentration (
μ
g/g)
0
700
900
1100
13
00
15
00
1700
BC
1000
0
500
2000 A
D
1
900
Calendar Years
c
206
Pb/
207
Pb
1.22
Pb concentration
40
1.18
20
1.14
0
1600
1700
1800
1900
2000
Date
Case Fig. 1.2
(a) Lead pollution and lead isotope profile preserved in an annually laminated lake, Lake Koltjärn, Sweden.
(After Brännvall et al. 1999.) (b) Historical records of lead inputs preserved in urban and suburban lakes in Georgia, USA.
(After Smol 2002; Callender & Van Metre 1997.) (c) Records of lead pollution and lead isotope signature in a Scottish freshwater
lake, Loch Lomond. (After Eades et al. 2002.)
Brännvall, M.-L., Bindler, R., Renberg, I., et al. (1999) The Medieval metal industry was the cradle of modern
large-scale atmospheric lead pollution in Northern Europe.
Environmental Science and Technology
33
,
4391-5.
Callender, E. & Van Metre, P.C. (1997) Reservoir sediment cores show U.S. lead declines.
Environmental
Science and Technology
31
, 424A-8A.
Eades, L.J., Farmer, J.G., MacKenzie, A.B., et al. (2002) Stable lead isotopic characterisation of the historical
record of environmental lead contamination in dated freshwater lake sediment cores from northern and
central Scotland.
The Science of the Total Environment
292
, 55- 67.
Renberg, I., Wik Persson, M. & Emeteryd, O. (1994) Pre-industrial atmospheric lead contamination detected in
Swedish lake sediments.
Nature
368
, 323- 6.
Shotyk, W., Weiss, D., Appleby, P.G., et al. (1998) History of atmospheric lead deposition since 12,370
14
C yr
BP from a peat bog, Jura Mountains, Switzerland.
Science
281
, 1635 -40.
