Screening of Polyalthia longifolia and Aloe vera for their phytoextractability of heavy metals in tropical soil of the Niger Delta

Journal of Applied Sciences and Environmental Management

TANEE, F.B.G¹  AMADI, N.¹ 

关键词: Heavy metal;    Polyalthia longifolia;    phytoextraction;    transfer factor;    Aloe vera;    contamination;    translocation factor;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

The work focuses on the screening of Polyalthia longifoliaand Aloe verafortheir phytoextractability of heavy metal in soil of the Niger Delta. 5kg of soil was pollutedwith 100 mg of Zn, Fe and Pb each replicated 9 times. Each set was separated into 3subgroups. The subgroups were phytoextracted with Polyalthia longifolia and Aloe veraalongside a control (no phytoextraction) respectively. After 12 weeks, the concentration ofLead, Iron and Zinc in soils, roots and shoots was determined. Results showed that the twoplants have phytoextraction ability with reductions in Zn, Fe, and Pb in the phytoextractionsoil . Metal transfer factor was PB: Aloe vera (0.881) > P. longifolia (0.315); Zn: P. longifolia(0.614) > Aloe vera (0.606); Fe: Aloe vera (0.812) > P. longifolia (0.774). Translocationfactors for the two plants were in the order: Zn: P. longifolia (0.79) > Aloe vera (0.36); Fe:P. longifolia (0.63) > Aloe vera (0.05); Pb: P. longifolia (0.57) > Aloe vera (0.23). Since thetranslocation factors were < 1, the plants can be classified as non- hyperaccumulators forthese metals.

【 授权许可】

Unknown