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Study on the Determination of Microamount of Cadion in Ployferric Sulfate Flocculant

Luo Ping,Zheng Huaili (Faculty of Applied Science & Technology,Chongqing University,Chongqing 400045)$$$$  
A rapid and simple method for the determination of microamount of cadion in ployferric sulfate flocculants with Cd~ 2+ ion selective electrode is propoded in this paper.The optimum conditions for the detemination and the tolerance of interfering elements were studied.The linear relationship holds over the range 1.0×10~ -2 ~9.0×10~ -7 mol·L~ -1 of Cd~ 2+ .The recovery between 91%~107% is attained.The relative standard deviation is 2.78%(n=6).This method has been applied to determination Cd~ 2+ in ployferric sulfate flocculant.The determining results are satisfactory.
【CateGory Index】: X830.2
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