ASSESSMENT OF THE LEVEL OF METALS AND CHARACTERIZATION OF AMBER FROM SOUTH WOLLO (DEDEBA)  AND NORTH SHOA (DIMA)

DEBRITU, ZENEBE

dc.contributor.author	DEBRITU, ZENEBE
dc.date.accessioned	2018-12-04T05:41:49Z
dc.date.available	2018-12-04T05:41:49Z
dc.date.issued	2018-11-25
dc.identifier.uri	http://hdl.handle.net/123456789/9225
dc.description.abstract	Amber is one of a gem family, which is fossilized tree resin and has been appreciated for its color and natural beauty since Neolithic time. Plant resin is formed through the natural polymerization and fossilization of exuded plant resin over the course of millions of years. In this study, the level of metal concentrations of amber samples collected from Dima and Dedeba was investigated using ICP-OES. The level of metal concentration of green amber collected from Dedeba shows high level of metal concentration of all metals. While yellow amber collected from Dima has high level of metal concentration of Mn, Mg and Zn but, it has low level of metal concentration of Cu, Ca and Fe. Iron metal shows greater level of metal concentration in all 5 amber samples. The surface structure of the material was investigated by FT-IR and XRD. Based on the FTIR spectroscopy result the chemical character of 5 ambers collected from Dima and Dedeba are similar and shows a broad peak at 3450 cm -1 that indicates all amber have O-H stretch. The FT IR spectra of amber samples shows peak at the range 1010 cm . The result indicates all samples except D (Dedeba yellow) has succinate character. The XRD pattern of amber sample sows a broad peak at 2ϴ = 10–20°. Which indicate the amber samples have amorphous structure. The XRD patterns of the yellow amber sample collected from Dedeba contain sharp and intensive peak at 2ϴ =32.5°. This diffraction peak is the most intensive diffraction line for the quartz (SiO 2 Keywords: Amber, Metal, Dedeba, Dima ) phase. -1 -1245 cm -1	en_US
dc.language.iso	en	en_US
dc.subject	CHEMISTRY	en_US
dc.title	ASSESSMENT OF THE LEVEL OF METALS AND CHARACTERIZATION OF AMBER FROM SOUTH WOLLO (DEDEBA) AND NORTH SHOA (DIMA)	en_US
dc.type	Thesis	en_US