分光光度法对超浓缩粉中磷含量的测定研究

Determination of the content of phosphate in super condensed laundry powder in spectrophotometry

在常用的分光光度法基础上对超浓缩洗衣粉中磷酸盐进行定量测定研究 .采用条件试验法进行了标准溶液吸取量、显色剂加入顺序、显色剂加入量、选取分析试样的探索 ,用正交试验法对试样称取量、加入的 HNO3量、煮沸时间、试液吸取量等各种因素进行优选 ,探索出了适用于超浓缩洗衣粉中磷酸盐的定量分析方法 ,准确率达 99%以上 .

Determination of content of phosphate in super condensed laundry powder had been discussed based on the spectrophotometry. The study had an exploration in the absorption amount of the standard solution,the adding order and amount of colour developing agent,selection of analysis specimen by conditional tests.The optimization of specimen weigh amount,the amount of HNO 3,boiling time,absorption amount of specimen solution by orthogonal tests.It has been shown experimentally that new method of quantitative analysis is suitable to super condensed laundry powder,and an accuracy more than 99 percent.