Prediction of the transfer of trace elements from soils into plants
2001
Nemecek, J. (Ceska Zemedelska Univ., Prague-Suchdol (Czech Republic)) | Podlesakova, E. | Vacha, R.
Transfer pathway soil - plant is being characterized in this paper. Transfer functions are used in searching for critical values of total contents of trace elements (TEs), their mobile species and mobility conditions in soils. They are derived by means of multiple regression analysis. Critical soil values are obtained by substitution of plant contents for fodder plant standards in prediction equations. The contribution is dealing with three trace elements Cd, Tl and Pb that are ecotoxicologically most important. Very mobile Cd and Pb with a low mobility are included into all fodder and food standards. Testing values of critical Cd soil contents and mobilities in relation to other soil properties were derived. What concerns Pb critical values were set up, attesting the fact that only rarely occurring high total and mobile species content in soils can induce critical transfers.
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