钼酸铵分光光度法测定总磷影响因素的探讨

Discussion on Influence Factors of Determining Total Phosphorus with Ammonium Molybdate Spectrophotometry

有机磷只有被过硫酸钾消解转化成正磷酸盐后,才能和钼酸铵发生显色反应。消化反应受消化温度、消化时间、溶液的酸碱性的影响,显色反应受显色条件、消化液的浊色度的影响。本文通过大量的摸索性试验和正交实验得出总磷测定的影响因素和最佳实验条件。

After digested by potassium sulfate,organic phosphorus can transfer into orthophosphate and turn out color reaction with ammonium molybdate.The digested reaction is effected by digestion temperature,digestion time and the pH of the solution.While the color reaction is effected by actual condition and turbidity and chroma of digestion solution.This paper proposes influence factors and the best experiment conditions of total phosphorus(TP) determination through a large number of exploration test and orthogona...