In recent years, plants and biomolecules have been used in order to remove heavy metals from environment as an inexpensive and environ-mentally friendly method. In this research, cell wall matrix polysaccharide and its components, i.e. cellulose, pectin, hemicellulose A and hemicellulose B were separated and purified. The matrix and its polysaccharide components were treated with aqueous solutions containing 100 ppb Au in acidic, almost neutral and basic pHs for two different periods. The results of GFAAS showed that wall matrix and its polysaccharide components absorbed Au in all treatments. In neutral and basic pHs, cellulose; and in acidic pH, hemicellulose A; absorbed the lowest amounts of Au, while hemicellulose B showed the highest Au absorption in all pHs, during 1 h treatment with Au solution. Except for hemicellulose B which its ability for Au absorption and retention reduced by the time, in case of other components the amounts of absorbed Au increased along with increase the time of the treatments.
', './data/jos/coversheet/cover_en.jpg'))