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http://dx.doi.org/10.5012/jkcs.2007.51.2.147

Simple and Selective Flow Injection Catalytic Determination of Ruthenium with Spectrophotometric Detection  

Rezaei, Behzad (Department of Chemistry, Isfahan University of Technology)
Majidi, Najmeh (Department of Chemistry, Isfahan University of Technology)
Publication Information
Journal of the Korean Chemical Society / v.51, no.2, 2007 , pp. 147-153 More about this Journal
Abstract
A simple, selective and highly sensitive flow injection catalytic method was presented for determination of ruthenium based on its catalytic effect on the oxidation of pyronin B by periodate in pH=1.0. The reaction rate is controlled specrophotometricaly by monitoring the dye absorbance at 555 nm. The optimized conditions make it possible to determine ruthenium in the ranges of 0.1-10.0 ng/mL (r2=0.9982) and 10.0-50.0 ng/mL (r2=0.9934) with a detection limit of 0.04 ng/mL and a sample rate of 30±5 samples/h. Relative standard deviation for the results of five replicate measurements does not exceed 1.44%. The proposed method has been successfully applied for quantitation of ultra trace amounts of ruthenium in some environmental and biological samples.
Keywords
Ruthenium; FIA; Spectrophotometry; Pyronin B; Catalytic Determination;
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