Fitodisponibilidad de Cd en suelo de diferente pH tratado con lodo albañal estimada por método isotópico y extracción química

Química Nova

Felipe Carlos Alvarez Villanueva²  Antonio Enedi Boaretto²  Cassio Hamilton Abreu Junior²  Takashi Muraoka²  Anderson Ricardo Trevizam²  Virgilio Franco Do Nascimento Filho¹ 

[1] ,Universidade de São Paulo Centro de Energia Nuclear na Agricultura Divisão de Produtividade Agroindustrial e AlimentosPiracicaba SP ,Brasil

关键词: cadmium;    L-value;    sewage sludge;   

DOI  :  10.1590/S0100-40422008000500014

来源: SciELO

【 摘 要 】

The Cd phytoavailability in sewage sludge-amended soils of different pHs using the 109Cd L-value isotopic method and Cd extracted by DTPA has been determined. Maize plants (Zea mais L.) were grown under greenhouse conditions in a xanthic ferralsol at different pHs amended with five sewage sludge (SS) rates, and labeled with 74 kBq kg-1 of 109Cd. The SS rates altered the properties of the soil chemicals and these influenced the isotopic parameter (L-value) and percent of Cd uptake by plants from soil (%Cdpdfs) and SS (%CdpdfSS). L-values and Cd extracted by DTPA correlate significantly with SS rates and Cd uptake by plants and are efficient for predicting the Cd phytoavailability in the sewage sludge-amended soil.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License