Absorção de bário por plantas de arroz (Oryza sativa L.) e mobilidade em solo tratado com baritina sob diferentes condições de potencial redox

Química Nova

Erica Souto Abreu Lima¹  Nelson Moura Brasil Do Amaral Sobrinho¹  Marcio Osvaldo Lima Magalhães¹  Jair Do Nascimento Guedes¹  Everaldo Zonta¹ 

[1] ,Universidade Federal Rural do Rio de Janeiro Instituto de Agronomia Departamento de SolosSeropédica RJ ,Brasil

关键词: contamination;    leaching;    redox potential;   

DOI  :  10.1590/S0100-40422012000900008

来源: SciELO

【 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】

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