Accumulation and Distribution of Heavy Metals in Phragmites australis in the Wetland of Liaohe River Estuary

Abstract:

Phytoextraction has been recognized as an alternative technique for the remediation of wetland contaminated by heavy metals. The objective of this paper is to investigate the characteristics of heavy metal phytoextaction by phragmites australis and the distribution in soils and phragmites australis of 13 sampling points distributed in fields of Zhaoquanhe, Yangjuanzi and Dongguo in Liaohe estuary.The results showed that the content of heavy metal of Cu and Zn is close in the three phragmites australis fields. The content of heavy metal of Pb in Dongguo field is higher than the others. The content of heavy metal of Cd is lowest for all the heavy metals in the three fields. For the content of heavy metal in different layer soils in the three phragmites australis fields, the content of heavy metal of Cu, Pb, Zn in soils of 0-10 cm, 10-20 cm is higher than in other layer soils. for Cd in soils of 0-30 cm is higher than in other layer soils. And the content of heavy metal in siols of 30-40 cm is lowest for all the heavy metals. The transfer and interaction of Cu, Zn, Cd and Pb in the soil- phragmites australis systems in the three fields is studied, the content of heavy metal of Cu, Zn, Cd is that soils>phragmites australis of aerial part>phragmites australis of underground part, and for the content of heavy metal of Pb, soils>phragmites australis of aerial part≈phragmites australis of underground part. The biological concentration factor of heavy metal of Cu, Zn, Cd is low and transfer coefficient is high relatively .

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 994-997
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.994
• Online since: October 2011
• Authors: Yong Xia Hou, Yan Wang, Hui Yin Li, Xin Xin Li, Xiao Jun Hu
• Keywords: Heavy Metal, Phragmites australis, Phytoremediation, Wetland

References

[1] M, Baudrimont, S. Anders, J Metivaud, and Y Lapaquellerie. Environ. Toxicol. Chem., Vol. 18 (1999), p.2472

[2] F. J. Chen and D. F.Wang. Chemosphere, Vol. 67 (2007), p. (2082)

[3] Y. M.Hao, Z. Z.Sun, Y. P.Zhang, J. Y.Qi and H. Z.Lin, Journal of Shanghai Fisheries University, Vol. 16 (2007), p.500（in Chinese）

[4] Q, Li. Modern Agricultural Sciences and Technology, (2010), p.316（in Chinese）

[5] Z. Li and K. Li. Modern Agricultural Sciences and Technology, (2010), p.268（in Chinese）

[6] J. G. Liu, K. Q and Li Xu. Field Crop s Research, Vol. 83 (2003), p.271（in Chinese）

[7] J. G. Liu, M. Qian and G. L. Cai. Journal of Hazardous Materials, Vol. 143 (2007), p.443（in Chinese）

[8] Y. G. Liu, X. Z. Song and X. Wang. Journal of Hunan University(Natural Sciences), Vol. 37 (2010), p.75（in Chinese）

[9] E. T. Peeters, J P Gardeniers, and A A Koelmans. Environ. Toxicol. Chem., Vol. 19 (2000), p.1002

[10] Y. W. Qin, Y. B. Su, B. W. Zheng, L. Zhang and J. Wang. Marine Sciences, Vol. 31 (2007), p.28（in Chinese）

[11] G. E. Riedel, J. G. Sanders and R. W. Osman. Marine Environmental Research, (1999), p.349

[12] Y. J. Sun. Journal of Inner Mongolia University for Nationalities, Vol. 19 (2004), p.61（in Chinese）

[13] M. Tao, B. D. Jin and J. T. Niu. Journal of Liaoning Technical University(Natural Science), (2009), p.184（in Chinese）

[14] H. Wang, Y. F. Jia, L. Liu, H. J. Zhu and X. Wu. Environmental Science, Vol. 30 (1999), p.1773

[15] Z. Yang, B. G. Li, D. D. Wang, X. D. Wang and Z. L. Li. China Environmental Science, Vol. 25 (2005), p.450（in Chinese）

[16] L. J. Zhang, D. Y. Zhang, S. C. Zhang, M. Zhang and H. X. Ye. Journal of Beijing Forestry University, Vol. 29 (2007), p.277（in Chinese）