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Solvent Extraction Of Gadolinium As A Complex With Di-n-butyldithiocarbamates

Solvent Extraction Of Gadolinium As A Complex With Di-n-butyldithiocarbamates
Mohammad Taufan, Iwan Hastiawan, and Yayah Mulyasih
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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.

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