铁的测定(Ⅰ过氧化氢溶解-邻菲啰啉分光光度法)一、试剂:过氧化氢:30%;氢氧化钠溶液:10%;酒石酸溶液:50%;对硝基酚溶液:0.4%;冰乙酸:比重1.06;氨水:比重0.90;抗坏血酸溶液:5%;邻菲啰啉溶液:0.2%。称0.2克盐酸邻菲啰啉溶于100毫升水中。铁标准溶液:称取纯铁(99.5%)0.200克,加(1:1)盐酸20毫升,加热溶解,小心加入过氧化氢1 Iron determination (Ⅰ hydrogen peroxide dissolution - phenanthroline spectrophotometry) First, the reagent: hydrogen peroxide: 30%; sodium hydroxide solution: 10%; tartaric acid solution: 50%; p-nitrophenol solution: 0.4 %; Glacial acetic acid: specific gravity 1.06; ammonia: specific gravity 0.90; ascorbic acid solution 5%; phenanthroline solution 0.2%. 0.2 g hydrochloric acid phenanthroline dissolved in 100 ml of water. Iron standard solution: Weigh 0.200 grams of pure iron (99.5%), add (1: 1) hydrochloric acid 20 ml, heated to dissolve, carefully added hydrogen peroxide 1