An Efficient and Sensitive Optical Sensor Based on Furosemide as a new Fluoroionophore for Determination of Uranyl ion.

A new, simple and sensitive optical sensor for determination of uranyl ion (UO2 (2+)) in aqueous solutions by spectrofluorimetric technique was introduced. The fluorescence spectra and response characteristics of 4-chloro-2 (furan-2-ylmethylamino) - 5-sulfamoylbenzoic acid (Furosemide) to UO2 (2+) was investigated. It showed preferable fluorescence response to UO2 (2+). Thereby, an efficient and sensitive optical sensor based on the fluorescence enhancement of Furosemide as a new fluoroionophore for UO2 (2+) determination at low concentration levels has been developed. The reaction was extremely rapid at room temperature, and the fluorescence intensity remains unchanged for at least 24 h. Also, the response mechanism of the present sensor is discussed. This optical sensor is useful owing to the sufficient capability for determination of UO2 (2+) in various real samples. Apart from the high sensitivity, the procedure is very simple, fast, wider linear range and gains a low detection limit without any complicated equipment. The present sensor has been successfully tested for determination of UO2 (2+) in real samples and the results obtained are comparable to inductively coupled plasma optical emission spectrometry (ICP-OES) measured which could be used as a promising tool in nuclear safeguards material accountability measurements.