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Reference type: Journal
Authors: Huang JX, Hu YF, Hu YL, Li GK
Article Title: Disposable terbium (III) salicylate complex imprinted membrane using solid phase surface fluorescence method for fast separation and detection of salicylic acid in pharmaceuticals and human urine.
Publication date: 2013
Journal: Talanta
Volume: 107
Page numbers: 49-54.
DOI: 10.1016/j.talanta.2012.12.054
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0039914013000064

Abstract: In this work, a simple, low cost, selective and sensitive complex imprinted membrane (CIM) for solid-phase fluorescent detection was developed with terbium (III) salicylate as complex template. Terbium-sensitized luminescence was employed for monitoring salicylic acid (SA) based on the fluorescence enhancement effect of benzoic acid derivatives on lanthanide ion Tb (III). The resulting CIM showed good fluorescent response and high selectivity towards SA with Tb as pivot in protic solvents, while demonstrating better analytical performance than the controlled membranes. The optimized adsorption time was 10 min, indicating rapid kinetics of the imprinted membrane. The linear response of CIM to SA was from 0.20 to 10 mg/L with limit of detection (LOD) of 0.040 mg/L. The prepared CIM was successfully applied to the analysis of salicylic acid in pharmaceuticals and spiked human urine with recoveries of 80.6% - 88.1%. The analytical results of the proposed method were in good agreement with those obtained by high performance liquid chromatography (HPLC) method, indicating that the developed membrane has acceptable practicability for fast determination of SA in real samples
Template and target information: terbium (III) salicylate complex, salicylic acid, SA, 2-hydroxybenzoic acid
Author keywords: Terbium (III) salicylate, Complex imprinted membrane, Solid phase surface fluorescence, salicylic acid

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