Effect of EDTA on Cadmium and Zinc Uptake by Sugarcane Grown in Contaminated Soil | Science Publications

American Journal of Environmental Sciences

Pantawat Sampanpanish¹  Natthakan Tantitheerasak¹ 

关键词: Cadmium;    Zinc;    EDTA;    Saccarumofficinarum;    Contaminated Soil;   

DOI  :  10.3844/ajessp.2015.167.174

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

The effect of EDTA on cadmium and zinc uptake by sugarcane (Saccarumofficinarum L.) grown in contaminated soil was investigated. Sugarcane was grown in pots for 1 month and EDTA was added at concentration levels of 0(control), 0.5, 1 and 2 millimole per 1 kilogram of soil. Plants were harvested at 2, 4, 6 and 8 months. Soil samples were analyzed to determined levels of cadmium and zinc. Plants were separated into 5 parts: Leaves, bagasses, underground stem, root and juice, including the phytotoxicity. Moreover, the plants were also analyzed for cadmium and zinc accumulation. This result shows that the concentration of EDTA at 1 millimole per 1 kilogram of soil had the highest cadmium accumulation in the root of sugarcane at 21.87, 44.68, 57.52 and 41.97 mg kg^-1, at the contact time, respectively. Furthermore, the root showed the most efficient sugarcane uptake compared to the underground stem, bagasses, leaves and juice (root > undergroundstem > bagasses > leaves > juice). The EDTA concentration at 2 millimoles per 1 kilogram of soil has maximum zinc accumulation in various parts of sugarcane. The harvested time at 2 months showed zinc uptake much higher than for leaves and bagasses, while the maximum accumulation of zinc was found in roots and the underground stem at 4 months.

【 授权许可】

Unknown