Study on Fluorospectrophoto Metric Determination of Copper(Ⅱ)with 5-(2′-Carboxybenzenazo) Rhodaniue
Shi Haoxin Wang Zhongyi (Department of Chemistry) Ruan Chuanmin (Fuyang Normal College)
In this paper, we will introduce the 5—(2'—Carboxybenzenazo) rhodanine been applied to fluorospectrophotometric determination of microamounts of copper(Ⅱ). This reagent reacts with copper(Ⅱ) in PH=5.6 and shows an intense fluoresence at λ_(em)/λ_(em)= 400nm/310nm. The fluoresence intensity is proportional to copper(Ⅱ) Concentration in the range of 0—48ppb with a seasitivity of 8ppb. The method has been apploed to the determination of trace copper in meat and vegetable with Satisfactory results.