【摘要】 优化了乙醇-水介质中钙与DBC-偶氮氯膦显色反应的条件，考察了该显色体系的分析性能．研究了复杂铁矿样品的分解和干扰消除的方法，建立了包头铁矿中钙经简单分离的分光光度法．更多还原

【Abstract】 The conditions of colour reaction of calciun and DBC-chlorophosphonazo in ethanol-aqueous medium were optimized and analytical charateristics of this colour system was examied. A decomposition method and interference-free method for determina-tion of calcium in complex Baotou iron ores were investigated. A spectophotometry with simple separation for determination of calcium in Baotou iron ores was developed.更多还原