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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 11, Number 4
JKCSEZ 11(4)
August 20, 1967 

 
Title
Spectrophotometric Determination of Impurities such as Iron and Copper in High Purity of Antimony with 8-Hydroxy-quinoline

고순도안티몬 중의 불순물 (철 및 동)의 8-Hydroxy-quinoline에 의한 흡광광도정량법
Author
Kyu Chang Park

박규창
Keywords
Abstract
8-Hydroxy-Quinoline(Qxine)에 의한 고순도 Antimony중 불순물(철 및 동)의 흡광광도 정량법을 검토하였다. 시료의 황산용액에 안티몬을 Masking하기 위하여 필요한 주석산의 영향을 조사한 결과, 0.5M-주석산용액 10ml로서 600mg 까지의 안티몬을 Masking할 수 있었다. pH 범위는 철은 5.0-5.7, 동은 3.5-4.0이었다. 철은 580m 에서 흡광도를 측정하면 되나, 동은 15%가성소오다용액으로 역추출하고, 남은 철을 580m , 410m 에서 측정하여 보정할 필요가 있다. 500mg 안티몬에 대하여 철은 150 g(0.005~0.016%)까지 정량이 가능했다.

A spectrophotometric method for the determination of major impurities, such as iron and copper, in high purity of antimony with 8-hydroxyquinoline (oxine) has been studied. The iron-oxinate is stable at the pH range 5.0 to 5.7, and the copper-oxinate at the pH range 3.5 to 4.0. To mask antimony in sulfuric acid solution of sample, author has investigated the effect of tartaric acid on antimony, and found that 10ml of 0.5M tartaric acid solution could mask up to 600mg of antimony. The absorbance of iron-oxinate was measured at 580mμ and iron could be determined, but it is necessary for copper-oxinate to measure at 410 and 580m respectively after removing heavy metals other than copper by back extraction with 15% solution of sodium hydroxide, and copper could be determined by making a correction for the amounts of iron present. Up to 150 μg of iron (0.005-0.03%), and 100 μg of copper (0.005-0.016%), in 500mg of antimony could be determined.

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132 - 137
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