C - Lublin
C - Lublin
C - Lublin
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HNO 3 –extractable form is very close to “pseudo total” one, especially in<br />
contaminated soils.<br />
2,5<br />
Cd-O horizon<br />
0,8<br />
Cd- B horizon<br />
Cd, mg/kg<br />
2<br />
1,5<br />
1<br />
0,5<br />
Cd, mg/kg<br />
0,6<br />
0,4<br />
0,2<br />
0<br />
0 50 100 150 200<br />
distance. km<br />
0<br />
0 50 100 150 200<br />
distance. km<br />
Pb, mg/kg<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
0<br />
Pb-O horizon<br />
HNO3<br />
NH4NO3<br />
AR<br />
0 50 100 150 200<br />
distance, km<br />
Pb, mg/kg<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
Pb-B horizon<br />
0 50 100 150 200<br />
distance, km<br />
Fig.1 Relation between HNO3, NH4NO3, and Aqua Regia extractable pools of Pb<br />
and Cd.<br />
Table 1. Portion of HNO 3 and NH 4 NO 3 extractable pool with respect to AR in<br />
highly contaminated (7 km of smelter) and background (100-200 km)<br />
soils.<br />
Metal Horizon HNO 3 / AR (%) NH 4 NO 3 /AR(%)<br />
Pb<br />
O<br />
B<br />
86-(56)<br />
39-(20)<br />
17-(0.4)<br />
0.5-(0.1)<br />
Cd<br />
O<br />
B<br />
104-(74)<br />
27-(2)<br />
82-(28)<br />
8-(1.7)<br />
Cu<br />
O<br />
B<br />
89-(29)<br />
64-(6)<br />
16-(0.9)<br />
2-(0.20)<br />
110