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《ANALYTICAL LABORATORY》 1999-02
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Spectrophotometric Determination of Trace Ruthenium with α,α′ Dipyridyl

KAI Xiao ming (Departmant of Chemistry,Anqing Normal College,Anqing 246011)  
In this paper,the colour reaction of ruthenium with α,α′ dipyridyl has been studied.In the medium of pH 4.6 HAc NaAc buffer and NH 2OH·HCl solution ,ruthenium reacts with α,α′ dipyridyl to form a 1∶3 complex by heating in a boiling water bath for 5min.The apparent molar absorptivity is 1.1×10 4L·mol -1 ·cm -1 at 457nm.Berr's law is obeyed for ruthenium in the range of 0~70μg/25mL.The method has been used to the determination of ruthenium in anode slime of alkali chloride factory with satisfactory results.
【CateGory Index】: O657.3
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