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由于长碳链季胺盐的加入,在一定酸度条件下(pH～5.8),Al~(3+)与铬天青S生成一种高配位的稳定的蓝色络合物,用日立220(A)双光束分光光度计比色,0～60μg三氧化二铝符合比尔定律。该法具有操作简便、准确及重现性好等优点,适用于大理石,石灰石、重晶石、萤石、灰岩、泥灰岩、锰矿等。已应用于岩矿分析,测定试料中0.02～30%范围内的三氧化二铝,能获得满意的结果。一仪器工作条件仪器:日立220(A)双光束分光光度计波长:619mm 响应时间:1 Sec 狭缝宽:2.0nm;ABS(吸收) 扫描速度:60nm/min 记录器走纸速度:20mm/cm W灯,1cm比色皿
Due to the addition of long-chain quaternary ammonium salts, Al 3+ and chrome azurol S form a highly coordinated and stable blue complex under a certain acidity condition (pH ~ 5.8) (A) Two-beam spectrophotometer colorimetric, 0 ~ 60μg aluminum oxide complies with Beer’s law. The method has the advantages of simple operation, accurate and reproducible, and is suitable for marble, limestone, barite, fluorite, limestone, marl, manganese ore and the like. Has been applied to rock and mine analysis, determination of the sample 0.02 to 30% of the aluminum oxide, to obtain satisfactory results. Instrument working conditions Instrument: Hitachi 220 (A) Dual Beam Spectrophotometer Wavelength: 619mm Response Time: 1 Sec Slit Width: 2.0nm; ABS (Absorption) Scanning Speed: 60nm / min Recorder Feed Speed: 20mm / cm W lamp, 1cm cuvette