【摘要】 <正> 氢锟与过氧化氢的反应可在氟化铵存在时被Cu(Ⅱ)催化.在一定的浓度范围内,反应速度与Cu(Ⅱ)的浓度成正比.利用这一反应,可以测定微克量的铜. 在有机溶剂存在下,金属的二乙基二硫代氨基甲酸盐与水溶液中的金属离子有交换能更多还原

【Abstract】 A method based on the oxidation of Hydroguinone with hydrogon peroxide using Copper (Ⅱ) as catalyst for the determination of trace silver in the presence of Ammonium fluoride, In ihe solution of PH 7.1-7.5, The silver-Ion exchanges quanlatativeiy with Cupric diethyldithiocarbamate to set free Copper (Ⅱ). Thus the copper ion maker use of indicative ion for the determination of trace silver indirectly. The linear range of the determination is O-l.oug/25ml of silver, The sensitivity of this method is 5ppb.更多还原