【摘要】 将Fe²⁺与邻菲啰啉的显色反应引入流动注射系统,用盐酸羟胺将Fe³⁺预先还原。0～6μg/ml的Fe²⁺符合比耳定律,检测出限0.11μg/ml。0.25μg/mlFe²⁺经5次测定的标准偏差为2.2％,进样频率为120次/h,回收率98.5～104％。对工业废水中铁的测定取得了满意的效果。更多还原

【Abstract】 The colour-development reaction of Fe²⁺and1, 10-phen-antholine was used in the flow injection system. The Fe³⁺ was reduced by hydroxylamine hydrochloric acid. Within O-6ug/ml range of Fe²⁺ Beer’s law is held, and a detection limit of 0.11ug/ml. The relative standard deviation of 0.25ug/ml Fe²⁺is 2.2％（n=S）.The sampling rate was 120 samples/h, the range of the recoveries was 98.5-104%. It has been applied to the determenation of iron in industrial waste water with satisfactory results.更多还原