Mcllvaine缓冲溶液:将1000mL0.1mol/L柠檬酸溶液与 625mL0.1mol/L磷酸氢二钠溶液混合 ferric sulfate-dupanol reagent (5 g of ferric sulfate, 3 g of sodium laurylsulfate, 95 ml of 85% phosphoric acid and After an appropriate time, the reaction was stopped by adding the ferric sulfate-Dupanol solution (Fe2(SO4)3.nH2O 5 g/l, Dupanol (sodium lauryl sulfate) 3 g/l and 85% phosphoric acid 95 ml/l) and the absorbance of the Prussian color developed was determined at 660 nm in a spectrophotometer. 产品编号产品名称包装 单价 数量PD0442-100g铁氰化钾100g481Pt870-250g水合硫酸铁250g391ST1727-500g无水磷酸氢二钠500g341