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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 26, Number 4
JKCSEZ 26(4)
August 20, 1982 

Studies on X-Ray Fluorescence Analysis of Sulfide Ores by Solution Technique (Ⅰ). Analysis of Sulfur

용액법을 이용한 황화광석의 X-선 형광분석에 관한 연구 (제1보). 황의 분석
Young-Sang Kim, Kee-Chae Park

김영상, 박기채
용액법을 이용하여 황화광석중 황을 X-선 형광분광법에 의하여 간접적으로 정량하였다. 시료를 Br2와 HNO3의 혼합용액으로 녹여서 황을 SO42-상태로 산화시켰고 주성분인 SiO2는 HF로 처리하여 날려 보냈다. 이 용액에 여분의 일정량 Ba2+용액을 가하여 BaSO4로 침전시키고 거른 다음 거른액과 씻은액중의 Ba의 형광 X-선세기를 측정하여 역계산으로 황을 정량하였다. 무게분석법에 의한 결과와 비교하여 보면 함량 20 ~ 40% 범위에서 ±1.7%의 평균차이를 나타낸다. 정광시료의 표준편차는 0.69로서 좋은 재현성을 나타냈다.

Using solution technique, sulfur in the sulfide ore was indirectly determined by X-ray fluorescence spectrometry. The sample was dissolved with the mixed solution of Br2 and HNO3, and SiO2, a major constituent, was repelled from the solution by HF treatment several times, Ba2+ solution was added to the solution to precipitate the SO42- ion as BaSO4. Measuring the fluorescent X-ray intensity of excess Ba2+ ion in the filtrate, the content of sulfur in the original ore was back-calculated. Comparing the results by this method with the gravimetric method, the mean difference was ±1.7% in the range of 20 to 40% of sulfur content and the method was tolerably reproducible.

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