The application of chemical dissolution for removal of sediment covering ceramics of underwater archaeology has been studied. The first step of this research was analysis and identification of the content of sediment covering ceramics of underwater archaeology using IR spectrophotometer, X-Ray Diffractometer, and Atomic absorption spectrophotometer. The second step was dissolution process of the sediment using water, Na2EDTA, and H2O2 solution. In this step, the influences of dissolution time using water and various concentration of the Na2EDTA and H2O2 solution have been evaluated. The result of this research showed that the sediment covering ceramics of underwater archaeology contains of organic compound, soluble salts of Na+ and K+, and insoluble salts of Ca2+, Mg2+, and Fe3+. Increasing the dissolution time in water has considerably increased the dissolution of the Na+ and K+ salts from sediment. On the other hand, increasing of concentration Na2EDTA gives an increase in the Ca2+, Mg2+, and Fe3+ salts dissolution from the sediment. The optimum concentration of H2O2 solution for dissolving organic compound is 30%.
展开▼
