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Solvent Extraction Of Gadolinium As A Complex With Di-n-butyldithiocarbamates
Mohammad Taufan, Iwan Hastiawan, and Yayah Mulyasih
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Di-n-butyldithiocarbamate, gadolinium, ICP-AES, rare earths, Solvent Extraction
Gadolinium (Gd) is one of rare earth metals that can be collected in minerals such as monazite. This element using as contrast agents in medicinal application as a chelate with diethylenetriaminepentaacetic acid (DTPA). The effect of different pH values, ratio mole metals with ligand, and organic solvent in extraction gadolinium as a complex with di-n-butyldithiocarbamate (DBDTC) have been investigated. Separatory funnel was used for this experiment. Extraction was shaked by hand for about 10 minutes with amount of organic solvent 2 x 5 mL. DBDTC was added into Gd solution in separatory funnel before adding organic solvent. Concentration of gadolinium in liquid phase analyzed by inductively coupled plasma atomic emission spectrometry (ICP-AES). From this resesarch showed that optimum condition extraction are pH 6, petroleum ether as solvent of extraction, and ratio mole metal with ligand 1:3. In this condition, extraction of Gd obtained maximum extraction 20,8 %. As a conclusion DBDTC is less efficiency as an alternative chelating extractants for Gd separation.