Title: Determination of Trace Cerium by Indirect Fluorescent Spectrophotometry
Abstract: This paper describes a new method for determination of trace amounts of cerium.The principle of the method as follows:Ce(Ⅳ) system which was absent of fluorescence became a characteristic fluorescence of Ce(Ⅲ) ion by adding ascorbic acid into Ce(Ⅳ) system,and re-adding a certain concentration formaldehyde solution,the new system had greater fluorescence intensity of the sensitizer.Thereby a new method of an indirect determination of trace cerium(Ⅳ) ion was established.With this method Cerium(Ⅳ) ion concentration in the 1×10-6 mol/L ~ 1×10-4 mol/L range showed good linearity,and detection limit was 7.2×10-8 mol/L.This method is simple,sensitive and selective.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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