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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 

The Separation of the Impurities in Bismuth Metal by Liquid Ion Exchangers and Colorimetric Determination

액상이온교환체에 의한 창연중 불순물의 분리정량
Myon-Yong Park, Sung-Line Nho

박면용, 노성린
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.

139 - 141
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