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Changes in copper, lead and zinc concentrations in plants from paper mill sludge-treated soils
N Calace1, B M Petronio, M Picciolo
1Dipartimento di Chimica, Università di Roma La Sapienza, piazzale A. Moro 5, 00185 Roma.
Annali Di Chimica
|February 24, 2001
Abstract:
Effects of paper mill sludge addition on the availability of metals were studied on different soils both laboratory and naturally polluted; copper, lead and zinc concentrations were determined in Hordeum Distichum plants grown on the untreated and on sludge-treated soils. In some case a decrease of metal concentration is observed on sludge-treated soils; these results are consistent with the reduction of metal mobile forms in the soil, before plant growth. The decrease of metal availability in sludge-treated soils may be related with the pH value of the soil after sludge addition.