Environmental Engineering Reference
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leaves;
Andropogon barbinodis
and
Xanthium strumarium
were in opposite
condition with the lowest Cd-foliar concentration (Carrillo and González,
2006). No linear relationship between Cd concentration in plants tissues and
extracted with DTPA was observed.
a)
140
90
Total
DTPA
40
-10
1 2 3 4 5 6 7 8 9 10 11 12
Sites
b)
T…
D…
100
50
0
1
3
5
7
9
11
13
Sites
Figure 3. Horizontal variability of total and DTPA-extractable Cd concentration in
abandoned tailing heaps from a) Zacatecas town, b) Fresnilllo and c) Sombrerete
mines.
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