Barium absorption by rice plants (Oryza sativa L.) and mobility in soil treated with barite under different redox potential conditions

Química Nova

Magalhães, Marcio Osvaldo Lima¹  Guedes, Jair do Nascimento¹  Zonta, Everaldo¹  Amaral Sobrinho, Nelson Moura Brasil do¹  Universidade Federal Rural do Rio de Janeiro, Seropédica, Brasil¹  Lima, Erica Souto Abreu¹ 

关键词: contamination;    leaching;    redox potential.;   

DOI  :  10.1590/S0100-40422012000900008

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Two parallel tests were carried out to evaluate barium solubility in soils treated with barite under reducing conditions: one in leaching columns and another with potted plants cultivated with rice. Soils were treated with three doses of barite and kept at two humidity levels. The reduction (-200 mV) condition promoted an increase in barium in the geochemical fraction of higher liability, higher concentrations of barium in the leached extracts, and higher absorption by rice plants. As a result of increased uptake and accumulation of barium, the plants showed stunted growth

【 授权许可】

Unknown