The investigation of phytoremediation of chromium, nickel and zinc by offensive plant Chrozophora tinctoria L. from soils surrounding Arak aluminum industrial complex

During past centuries and industrial activities of human that have been include of agriculture, military and disposal of industrial wastes caused that wide region specially, developed countries face with high concentrations of heavy metals and pollutants. Moreover, negative effects on ecosystems and other natural regions, these regions created too many risks for human health because of food pollution by usage of agricultural productions and drinking water. The aim of this research, discussion about phytoremediation with use of local techniques and those potentials is as a corrective technique that from natural capability of biotic plants use for removal and purification of pollutant components of environment. This research was done as completely randomized blocks design with 3 replications during 2011for evaluation of efficiency amount and amplitude of usage of herbal exploitation method by offensive plant Chrozophora tinctoria for purification of around solis of Iralko complex. At first Zn, Ni and Cr elements measured in soil, then in the control treatments, 2.5, 5 and 10 fold of sample mean concentration, the amount of uptake and storage in different plant organs were investigated. The results showed that the highest amount of Zn (61.63%) and Chromium (67.33%) were found in leaf and stem, respectively. According to the results, it can be stated that Chrozophora tinctoria have an effective role in the removal of Zn and Cr in the complex surrounding soils.