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Heavy Metals Extraction Potential of Sunflower (Helianthus annuus) and Canola (Brassica napus) | ||
| Caspian Journal of Environmental Sciences | ||
| مقاله 5، دوره 3، شماره 1، فروردین 2005، صفحه 35-42 اصل مقاله (455.38 K) | ||
| نویسندگان | ||
| M. Solhi* 1؛ M.A. Hajabbasi2 | ||
| 1Soil and Water Department, Isfahan Agricultural Research Center, Isfahan | ||
| 2Soil Science Department, College of Agriculture, Isfahan University of Technology, Isfahan 84154, | ||
| چکیده | ||
| Phytoextraction is a remediation technology that uses plants to remove heavy metals from soil. The success of a phytoextraction process depends on adequate plant yield (aerial parts) and high metal concentrations in plant shoots. A pot experiment was conducted to investigate the combination effects of plants [sunflower (Helianthus annuus) and canola (Brassica napus)] with soil treatments (manure, sulfuric acid and DTPA). Treatments, included two plants and seven soil treatments, which were applied baeed on a completely randomized factorial design. Three replicates were used for each treatment.. The largest shoot dry weight biomass production occurred in manure treatments for both plants. The maximum shoot concentrations of Pb and Zn were 234.6 and 1364.4 mg kg-1 respectively in three mmoles DTPA kg-1 treatment of sunflower. Furthermore the results showed that sunflower had a higher extracting potential for removal of Pb and Zn from polluted soil. REFERENCES Alloway, B. J. 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Lehoczky, E., Szabados, I. and Marth, P. (1996) Cd Content of Plants as Affected by Soil Cd Concentration. Commun. Soil .Sci. Plant Analysis. 27, 1765--1777. Lindsay, W. L., Norvell, W. A. (1978) Development of a DTPA Soil Test for Zinc, Iron, Manganase and Copper. Soil Sci. Soc. Am. J. 42, 421--428. Lombi, E., Zhao, F. J., Dunham, S. J. and McGrath, S.P. (2001) Phytoremediation of Heavy Metal Contaminated Soils: Natural Hyperaccumulation Versus Chemically Enhanced Phytoextraction. J. Environ. Qual. 30, 1919--1926. McGrath, S. P. (1988) Phytoextraction for Soil Remediation. In R. R.Brooks (ed.). Plants that Hyperaccumulate Heavy Metals. CAB international, Wallingford, Oxon, Uk, New York. pp. 261--287 McGrath, S. P., Sidoli, M. D., Baker, A. J. M. and Reeves, R. D. (1993) The Potential for the Use of Metal Accumulating Plants for the In Situ Decontamination of Metal Polluted Soils. In Integrated Soil and Sediment Research. H. J. P. Eijsackers and T.Hamers (Eds.). Kluwer Academic publishers, Dordrecht, the Netherlands. pp. 673--676. Paul, E. A., (1984) Dynamics of Organic Matter Soils. Plant Soil 76, 275--285. Pratt, P. F. (1965) Digestion with Hydrofluoric and Perchloric Acid for Total Potassium and Sodium. In C. A. Black(ed.) Methods of Soil Analysis, Part 2 Soil Science Society of America, Madison, Wisconsin, USA, pp. 1019--1021. Raskin, I., Kumar, P. B. N. A., Dushenkov, V. and Salt, D. E. (1994) Bioconcentration of Heavy Metals by Plants. Curr. Opin. Biotechnol. 5, 285--290. Robinson, B. H., Leblanc, M., Petit, D., Brooks, R.R., Kirkman, J.H. and Gregg, P. E. H. (1988) The Potential of Thlaspi caerulescens for Phytoremediation of Contaminated Soils. Plant and Soil. 203, 47- -56. Salt, D. E., Blaylock, M., Kumar, N. P. B. A, Dushenkov, V., Ensley, B. D., Chet, I. and Raskin, I. (1995) Phytoremediation: A Novel Strategy for the Removal of Toxic Elements from the Environment Using Plants. Biotechnol. 13: 468--475. Shen, Z. G., Zhao, F. J. and McGrath, S. P. (1997) Uptake and Transport of Zinc in the Hyperaccumulator Thlaspi caerulescens and Nonhyperaccumulator Thlaspi ochroleucum. Plant Cell Environ. 20, 898--906. Soil survey staff. (1999) Soil Taxonomy: A basic system of Soil Classification for making and interpreting. Soil Surveys, 2nd ed. Agric. Handbook, Vol. 436. USA. Govt. print. Office, Washington, DC, 869 p. Walkley, A., Black, C. A. (1934) An Examination of the Degtareff Method for Determining Soil Organic Matter and a Proposed Modification of the Chromic Acid Titration Method .Soil Sci. 37: 29-38. Wenger, K., Gupta, S. K., Furrer. G. and Schulin,R (2002) Zinc Extraction Potential of Two Common Crop Plants, Nicotiana tabacum and Zea mays. Plant and Soil. 242: 217--225. | ||
| کلیدواژهها | ||
| accumulation؛ Canola؛ lead؛ Phytoextraction؛ sunflower؛ Zinc | ||
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