Journal of Environmental Biology

Phytoremediation potential of indigenous plants from Thai Nguyen

province, Vietnam

Author Details

Bui Thi Kim Anh

Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi- 10000, Vietnam

Dang Dinh Kim

(Corresponding author)

Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi- 10000, Vietnam

e-mail: dangkim.iet@gmail.com

Tran Van Tua

Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi- 10000, Vietnam

Nguyen Trung Kien

Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi- 10000, Vietnam

Do Tuan Anh

Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi- 10000, Vietnam

Publication Data

Paper received:

19 August 2009

Revised received:

03 June 2010

Accepted:

15 July 2010

Abstract

This study was focused on determining Arsenic (As), Lead (Pb), Cadmium (Cd) and Zinc (Zn) in 33 indigenous plants and 12 soil in-situ plant samples in Thai Nguyen Province, Vietnam. The results showed that the soils of surveyed mining areas contained 181.2- 6754.3 mg kg^-1 As, 235.5-4337.2 mg kg^-1 Pb, 0.8- 419 mg kg^-1 Cd and 361.8-17565.1 mg kg^-1 Zn depending on the characteristics of each mining site. These values are much higher than those typical for normal soil. The heavy metal uptake into shoots and roots of 33 indigenous plant species was also determined. Two species of the plants investigated, Pteris vittata L. and Pityrogramma calomelanos L. were As hyperaccumulators, containing more than 0.1% heavy metals in their shoots. Eleusine indica L., Cynodon dactylon L., Cyperus rotundus L. and Equisetum ramosissimum (Vauch) accumulate very high Pb (0.15-0.65%) and Zn (0.22-1.56%) concentration in their roots. Additional experiments to clarify the potential of six these plants as good candidates for phytoremediation of heavy metal pollution soil are being carried out in our laboratory.

Key words

Heavy metal, Soil pollution, Hyperaccumulator, Indigenous plants, Phytoremediation

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