The phosphorus content of phytin was determination in molybdate-antimony-scandium color agent after it was digested by concentrated sulfuric acid and perchlorate, with its deviation of no over 5%.

• 浓硫酸和高氯酸消解后，用钼-锑-钪复合显色剂测定植酸钙中的磷含量，偏差不超过5%25；