CAJ | 학술논문

在酸性溶液中高锰酸可氧化甲基橙褪色，褪色程度与锰含量呈线性关系，锰在0～25μg内符合朗伯－比尔定律。从而可用分光光度法测定锰的含量。其灵敏度为ε500＝2．7×104，比高锰酸盐分光光度法高100倍。本文试验了该法测定条件及干扰元素允许量，并用该法测定了铁矿石、硅质、镁质、铝质等耐火材料中氧化锰，结果表明，对于氧化锰含量为0．014％的试样，测定结果的相对标准偏差为7．14％，标准样品比对结果满足允许差要求。
재산성용액중고맹산가양화갑기등퇴색，퇴색정도여맹함량정선성관계，맹재0～25μg내부합랑백－비이정률。종이가용분광광도법측정맹적함량。기령민도위ε500＝2．7×104，비고맹산염분광광도법고100배。본문시험료해법측정조건급간우원소윤허량，병용해법측정료철광석、규질、미질、려질등내화재료중양화맹，결과표명，대우양화맹함량위0．014％적시양，측정결과적상대표준편차위7．14％，표준양품비대결과만족윤허차요구。
The Methyl orange may be oxidized and become fading in acid solution under the action of permanganate .The relationship between the fading degree and the manganese content is linear .Lambert-Beer's law plays a role when the manganese content is 0~25μg.The manganese content may be deter-mined with the spectrophotometric method .The sensitivity isε500 =2.7 ×104 , which is 100 times of the permanganate spectrophotometric method .In this paper , the test condition and the allowed amount of the interference element is analyzed .The manganese oxide in the iron ores and the refractory materials such as siliceous , magnesium and aluminous materials is determined .As the result shows , for the sample of which the manganese oxide content is 0.014%, the RSD of the test result is 7.14%and the comparison result of the standard sample meets the tolerance requirement .