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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 12, Number 4
JKCSEZ 12(4)
August 20, 1968

Title	The Separation of the Impurities in Bismuth Metal by Liquid Ion Exchangers and Colorimetric Determination 액상이온교환체에 의한 창연중 불순물의 분리정량
Author	Myon-Yong Park, Sung-Line Nho 박면용, 노성린
Keywords
Abstract	액상이온교환체 Amberite LAI을 chloroform에 10%로 묽혀서 염산산성에서 Bi(III), As(III), Sb(III), Zn(II) 및 Fe(III)의 추출율을 시험한 결과, Zn(II)는 2M에서 98%. As(III)는 7~14M에서 Sb(III)는 2~4M에서 , Fe(III)는 6~10M에서 창연과 정량적으로 분리되었다. 그리고 chloroform을 용매로 썼을 때는 xylene이나 hexane을 용매로 썼을때보다 더 급경사를 이루는 추출율곡선을 나타냈다. 각각의 불순물을 분리후 Zn(II)는 dithizone. As(III)는 Gutzeit method, Sb(III)는 brilliant green, Fe(III)는 thiocyanate에 의한 비색방법으로 정량하였다. The extraction curve of metal ions with Amberite LAl-chloroform has been found to be more steeper than with Amberite LAl-xylene or hexane, and the extraction ratio of Zn (Ⅱ) in 2M HCl solution is 98%. The extraction ratio of As (Ⅲ) in 9~11M HCl soln., Sb (Ⅲ) in 2~4M HCl soln., and Fe (Ⅲ) in 6~10M HCl soln. are 100%. The separated elements from Bi metal were determined by colorimetry, Zn (Ⅲ) with dithizone, As (Ⅲ) with Gutzeit method, Sb (Ⅲ) with brilliant green and Fe (Ⅲ) with thiocyanate.
Page	139 - 141
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