Jafarmasoud Sinaki

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Massoumeh Farasat

Islamic Azad University, Tehran

ZarrinTaj Alipour

Samaneh Seyedsadr

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Islamic Azad University, Tehran

Islamic Azad University, Ahvaz Branch

Ahvaz Jundishapur University of Medical Sciences

Razi University

Islamic Azad University, Science and Research Branch

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Investigation of the Ability of Mentha spicata L. ' s for Reducing Cadmium in Contaminated Soils

International Journal of Agronomy and Plant Production (2013)

Samaneh Seyedsadr ZarrinTaj Alipour Massoumeh Farasat Jafarmasoud Sinaki

In this study, four cadmium treatments (control, 5, 10 and 20 ppm) were added to the soil and the fast-growing plant Mentha spicata was investigated to assess phytoremediation. The results showed that cadmium absorbed by the root of the plant is different in various cadmium treatments and have significant difference in 0.01 levels. But the amount transmitted to the leaves is insignificant. There is a significant difference in treatments at different levels of pollution that is the amount of cadmium transmitted to the leaves has been increased as cadmium density in soil grows. Bioconcentration factor of the root in the controltreatment, 5, 10 and 20 ppm were obtained 57. 66,19.46, 49.80, 23.38 ppm and the bioconcentration factor of the leaf 0.76, 1.20, 1.63, 9.00 ppm in order. Considering the results of bioconcentration factors of the root and leaf in Mentha spicata which is above 1, this plant can be put among the ones which is able to extract cadmium. Uptake index in the control treatment,5, 10 and 20ppm were obtained1.17,5.40,10.15 and 13.16in order. This coefficient can be used as a relative criterion to calculate refinement potential of metal elements. It can be inferred that uptake index has been increased as cadmium density grows based on the results. This shows that the plant is more able to extract cadmium from the soil.

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Mentha spicata

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