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分析磷矿石的物理化学特性 ,考察多种磷矿石试样的溶解方法 ,探讨柠檬酸—硝酸铝混合溶剂溶解磷矿石的反应机理 ,借助示差光度法提出了快速准确测定磷矿石中高含量全磷的新方法。试验表明 ,此方法测定结果与磷钼酸喹啉重量法分析结果相符 ,其 RSD(相对标准偏差 ) <5 % (n=6 )
The physical and chemical characteristics of phosphate rock were analyzed. The dissolution methods of various phosphate rock samples were investigated. The reaction mechanism of dissolving phosphate rock with citric acid-aluminum nitrate mixed solvent was discussed. With the aid of differential photometry, A new method of total phosphorus content. The test results showed that the results of this method were in good agreement with the quinoline phosphomolybdic acid gravimetric method. The relative standard deviation (RSD) was less than 5% (n = 6)