A new thin film optical sensor for assessment of UO22+ based on the fluorescence quenching of Trimetazidine doped in sol gel matrix

作者：Elabd A A; Attia M S^*

来源：Journal of Luminescence, 2015, 165: 179-184.

DOI：10.1016/j.jlumin.2015.04.024

• Optical sensor
• UO22+
• Fluorescence quenching
• Thin film
• Trimetazidine

A new, simple and sensitive method for the assessment of UO22+ was developed. The method is based on the quenching of the fluorescence intensity of the thin film optical sensor 1-(2,3,4-trimethoxybenzyl) piperazine [Trimetazidine] doped in sol gel matrix in the presence of different UO22+ concentrations in DMSO. The remarkable quenching of the fluorescence intensity of Trimetazidine by various UO22+ concentrations was successfully used as a new optical sensor for the assessment of UO22+ in DMSO at lambda(ex)/lambda(em)=340/374 (nm). The mechanism of the interaction between the optical sensor and UO22+ was discussed. The calibration plot was achieved over the concentration range 1.7 x 10(-6)-4.9 x 10(-8) mol L-1 with a correlation coefficient of (0.999) and limit of detection (LOD) and limit of quantification (LOQ) are 4.1 x 10(-8) and 1.2 x 10(-7) mol L-1, respectively.

• 出版日期2015-9