Identification and Comparison of Metallic Ions and Chemical Components in Wood and Bark of Mulberry tree by Atomic Absorption and GC-MS Methods

The aim of this study was accomplished on identification and comparison of chemical compounds in heart wood and bark of mulberry tree. For this purpose, the samples were chosen randomly from heart wood and bark of mulberry tree in Nowshahr's forest region. Then, flour and ash were provided from heart wood and bark of mulberry tree by TAPPI standards. For measured metallic ions, first the mineral compound of ash dissolved by 65% nitric acid and for its identified by atomic absorption method. The results showed that zinc ion in heart wood of mulberry tree was more than its bark, but manganese and iron ions were lower and its cupper ion was same. Then extractives were separated from wood flour by acetone and extractives residue transferred to glass vial and was added BSTFA reactive agent to it. After samples prepared, samples were injected to the GC/MS device for it analysis. Identification of compounds was done by retention time of each compound, calculation of Quats index and Adams table. The result of GC-MS showed that there are 30 compounds in bark of mulberry tree, that beta-Tocopherol(40.86%), bis (2-ethylhexyl)phthalate(11.2%), 9,12-Octadecadienoic acid(9.12%) and Triphenyl phosphine(9.82 were important components. 93 components identified heart wood of mulberry tree that resorcinol(79.47), methyl diphenyl methane(12.06%), p-xylene(0.06%) and gibberllin A3 (0.15%)di-limonene, as important components. These compounds can very important in durability and consumption its. Comparison of chromatograms showed that 1,2-benzenedicarboxylic acid was exists as a common components in heart wood and bark of mulberry tree.