Study of effects of silicon and phosphorus in reducing the availability of heavy metals in mining area

Química Nova

Guerreiro, Mário César¹  Paim, Lilian Aparecida¹  Carvalho, Ruy¹  Abreu, Celeste Maria Patto¹  Universidade Federal de Lavras, Lavras¹ 

关键词: silicon;    phosphorus;    heavy metals.;   

DOI  :  10.1590/S0100-40422006000100007

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This study was developed with a soil contaminated by heavy metals, with the purpose of evaluating the action of silicon and phosphorus as protection agents through simple extractions by DTPA. The collected samples were prepared and incubated with five doses of silicon and five doses of phosphorus, with four replicates, amounting to 100 experimental units. After 30 and 60 days, samples of each treatment were collected, submitted to pH analyses and simple extraction by DTPA. The amounts of DTPA-extracted metals depended on the doses of silicon and phosphorus and on the pH. Treatments with silicon and phosphorus was efficient in decreasing the availability of heavy metals in soil.

【 授权许可】

Unknown