This paper introduced the indirectdetermination of polyphosphate in laundry powder by potentiometric titration, the method is featured of simple, rapid and reliable.
用强酸分解洗衣粉中的聚磷酸盐，以电位滴定法间接测定其中的聚磷酸盐含量。
2
The polarographic catalytic wave method for the indirectdetermination of sulfate radical was introduced. The influence factors and the experimental conditions had been discussed.