Influence of brown coals, sludge and their mixtures and FYM on the content of cadmium and lead in soil and Italian ryegrass
2005
Symanowicz, B. (Akademia Podlaska, Siedlce (Poland). Katedra Gleboznawstwa i Chemii Rolniczej), E-mail: [email protected]
The pot experiment was carried out over 1998-00 which aimed at defining the effect of brown coals, sludge as well as their mixtures and farmyard manure (FYM) on the content of cadmium and lead in subsoil and "Kroto" ryegrass. Pots were filled with light loamy sand (as subsoil). Brown coal from the Sieniawa and Konin mines, sludge from waste treatment plants in Siedlce, Lukow, and Drosed, and mixed farmyard manure were added. In each experiment year ryegrass was harvested 4 times (4 cuts). A total content of cadmium and lead in subsoil and dry matter of ryegrass was determined with the ICP-AES method, following the "dry" mineralization of the samples. The average content of cadmium and lead in subsoil before the experiment was, respectively, 0.44 and 8.44 mg/kg, and after the experiment - 0.33 and 7.09 mg/kg d.m. On average, from 0.27 to 0.33 mg/kg d.m. of cadmium and from 3.33 to 5.14 mg/kg d.m. of lead were found
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