Chemical alterations and nickel phytoavailability in sewage sludge-amended soil

Química Nova

Abreu Junior, Cassio Hamilton¹  Muraoka, Takashi¹  Trevizam, Anderson Ricardo¹  Alvarez V., Felipe Carlos¹  Fernandes, Henriqueta Maria Gimenes¹  Boaretto, Antonio Enedi¹  Universidade de São Paulo¹ 

关键词: soil;    nickel phytoavailability;    sewage sludge.;   

DOI  :  10.1590/S0100-40422008000500009

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The alteration of soil chemicals and its influence on availability (DTPA extractant method) and phytoavailability (63Ni L-value, isotopic method) of Ni was studied in sewage sludge-amended soil at different pHs. The soil pHs were 4.3, 5.3 and 5.9 and the rates of sewage sludge (SS) 0, 15, 30, 45 and 60 Mg ha-1. The chemical and physicochemical soil characteristics were altered by the SS rate and increased the Ni availability and phytoavailability. The isotopic method (63Ni L-value) was more efficient in predicting the Ni phytoavailability that the Ni-DTPA extractant in soil pHs 5.3 and 5.9.

【 授权许可】

Unknown