Nitric-perchloric acid digestion and antimony salt-phosphomolybdate blue spectrophotometry were used to determine the trace phosphorus in the residual detergents, and an analytic method was thereby established.

• 采用硝酸-高氯酸消解、锑盐-磷钼蓝光度法测定洗涤剂中的微量磷；从而建立了洗涤剂中微量磷的分析方法.