Consejo Superior de Investigaciones Científicas
UNIDAD ASOCIADA "SISTEMAS AGROFORESTALES": ESTACIÓN FITOPATOLÓXICA DO AREEIRO - MISIÓN BIOLÓGICA DE GALICIA
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Home » Publications » Papers » 2006

IV Congreso Iberoamericano de Física y Química Ambiental, Cáceres 2006

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Acumulación en suelos agrícolas de cobre, níquel, plomo, y zinc procedentes de lodos de depuradora urbana


Pablo Rodríguez, Saleta González, Mª Jose Lema

Estación Fitopatolóxica do Areeiro. Servicio Agrario. Excma. Diputación Provincial de Pontevedra. Subida a la Robleda s/n.36153 Pontevedra. efa@efa-dip.org


ABSTRACT:The use of sewage sludge in agriculture is regulated to avoid harmful effects on soils of some heavy metals. In European legislation limit values for amounts of metals wich may be added annually are based on a 10 year average. This work is to study the increase in total and available copper, zinc, nickel and lead in two agricultural soils after repeated application of doses of sewage sludge allowed by Spanish regulations. Nevertheless, our results show that soil limits for total copper, zinc, nickel and lead are reached with quantities of sewage sludge clearly inferior to that theoretically allowed for a ten year period.