硫酸法湿法磷酸石灰乳两段中和法生产饲料级磷酸氢钙的过程中 ,五氧化二磷的分析工作量较大。一般对其多采用磷钼酸喹啉重量法和磷钼酸喹啉容量法测定。重量法分析结果准确度高 ,但其分析手续复杂、时间长 ,容量法与重量法类似 ,且分析数据偏差大 ,两者均不适合生产中快速测定 In the process of two-stage neutralization with sulfuric acid method wet-process phosphoric acid lime milk to produce feed-grade DCP, the analysis workload of P2O5 is larger. In general its use of phosphomolybdic acid quinoline gravimetric method and phosphomolybdic acid quinoline volumetric method. Gravimetric analysis is highly accurate, but its analysis is complex and takes a long time, with volumetric and gravimetric methods being similar and with large deviations in analytical data, neither of which is suitable for rapid determination in production