The Determination of Rare Soil Metals in Thorium Concentrate Using Emission Spectrograph Method

Essye , Dwiwahyu Ratnasari (2011) The Determination of Rare Soil Metals in Thorium Concentrate Using Emission Spectrograph Method. S1 thesis, UNY.

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Abstract

This study aims at determining the optimum condition of excitation periods, currents, and electrode distances in the determination of rare soil metals of cerium (Cc), lanthanum (La), yttrium (Y), and neodymium (Nd) in the thorium concentrate of monazite sand processing results using Emission Spectrograph method and determining concentrations of rare soil metals of cerium (Cc), lanthanum (La), yttrium (Y), and neodymium (Nd) in the thorium concentrate of monazite sand processing results with optimum operation conditions. The research subject was the thorium concentrate of monazite soil proccessing results. The research object was the determination of rare soil metals (Y, La, Cc, and Nd) in the thorium concentrate. Qualitative and quantitative analyses were done using industrial spec synteshis standards. The sample analysis was done in the form of solution concentrated into pure graphite electrodes by using Emission Spectrograph as the analysis tool and Spark-Arc as the excitation source. This study was begun by determining the optimum operation condition by variation of times: 5, 10, 15, 20, 25, 30, 35 seconds; variation of currents: 6, 7, 8, 9, 10, 11 Ampere; and electrode distances of l, 2, 3, 4, 5 mm. The research results showed that the optimum condition of the excitation time was 35 seconds, the optimum condition of the current was 10 ampere, and the optimum condition of the electrode distance was 5 mm. The results of the element anlyses of Y, La, Cc, and Nd in Sample 1, 2, and 3 were Y = (7633,99 f 699,27) pg/mL, (7630,06 ± 165,56) pg/mL, and (6932,03 ± 165,52) yg/mL; La = (1696,08 ± 242,31) yg/mL, (1624,32 ± 99,29) pg/mL, and (1599,22 ± 169,21) pg/mL; Cc = (11375,57 f 295,91) pghnL, (11390,87 ± 769,80) pg/mL, and (8806,39 ± 236,72) pg/mL; and Nd = (8369,53 ± 600,86) Itg/mL, (8387,88 f 244,48) pg/ml, and (7000,00 ± 332,20) pg/ml. Key words : thorium concentrate, Emission Spectograph, rare soil metals

Item Type:	Thesis (S1)
Subjects:	Matematika dan Ilmu Pengetahuan Alam > Kimia
Divisions:	Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Jurusan Pendidikan Kimia > Kimia
Depositing User:	Eprints
Date Deposited:	08 Aug 2012 18:00
Last Modified:	29 Jan 2019 15:39
URI:	http://eprints.uny.ac.id/id/eprint/3455

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