Luminescence enhancement effect for the determination of balofloxacin with balofloxacin–europium (III)–sodium dodecylbenzene sulfonate system

Wang, Lei; Guo, Changchuan; Chu, Zhijie; Jiang, Wei

doi:10.1016/j.jlumin.2008.08.006

Cited by 17 publications

(7 citation statements)

References 13 publications

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“…However, analytical techniques based on HPLC involve a complex procedure and costly solvents and produce a lot of waste liquid. Compared with chromatography, spectrofluorimetry attracts more and more interest with its high sensitivity and simplicity, and thus has been used extensively in the analysis of drugs and food [5] , [6] , [7] . In our previous publication, the interaction of EP and bovine serum albumin with fluorescence quenching method and determined EP in EP tablet and human serum were developed, but the limit of detection was relatively high (0.28 μg/mL) [8] .…”

Section: Introductionmentioning

confidence: 99%

Determination of epristeride by its quenching effect on the fluorescence of L -tryptophan

Gong

Zhu

2013

Journal of Pharmaceutical Analysis

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A rapid, novel spectrofluorimetric method to determine epristeride (EP) in biological fluids and a pharmaceutical formulation was developed, based on the fact that fluorescence intensity of l-tryptophan could be quenched by EP in the medium of pH=9.0. The various factors influencing fluorescence quenching were discussed. The quenching mechanism was investigated with the quenching type, synchronous fluorescence spectra and quantum efficiency. Under the optimized conditions, fluorescence quenching value (ΔF=Fl-tryptophan−FEP–l-tryptophan) showed a good linear relationship with the EP concentration ranging from 0.4 to 12.0 μg/mL. The linearity, recovery and limit of detection demonstrated that the proposed method was suitable for EP determination in biological fluids and EP tablets. The method was successfully applied to the analysis of EP in real samples and the obtained results were in good agreement with the results of the official method.

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Section: Introductionmentioning

confidence: 99%

Determination of epristeride by its quenching effect on the fluorescence of L -tryptophan

Gong

Zhu

2013

Journal of Pharmaceutical Analysis

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“…e excited molecule is then transitioned to its triplet state (S 1 ⟶ T 1 ) via intersystem crossing (ISC). Lastly, energy is transferred on one or many excited states of the central ion via nonradiative transition [T 1 ⟶ Sm(III)/Tb(III)], and a strong characteristic luminescence of the core ion is emitted [22,25]. is phenomenon is known as the 'antenna effect.'…”

Section: Resultsmentioning

confidence: 99%

“…Possessing unique luminescent characteristics when complexed with organic ligands (recognized as the antennas), lanthanide-sensitized luminescence has been recently widely described for the detection of drugs and pharmaceuticals [19][20][21][22][23][24]. Among these characteristics, the unique decay times allow an effective distinction between the background interferences in analyses.…”

Section: Scheme 1 Chemical Structure Of Orbifloxacin (Orlx)mentioning

confidence: 99%

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Application of Samarium- and Terbium-Sensitized Luminescence via a Multivariate-Based Approach for the Determination of Orbifloxacin

Al-Hashimi

El-Shafie

Jumaa

et al. 2022

Journal of Chemistry

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A lanthanide-based optical sensor has been developed for the sensitive and reliable spectrofluorometric determination of the fluoroquinolone antibiotic orbifloxacin (ORLX). Reaction of ORLX and two lanthanide metal ions, Sm(III) and Tb(III), in aqueous buffered solution produced highly fluorescent complexes. Plackett–Burman design (PBD) was used to explore the impact of four factors, pH, temperature (Temp), contact time (CT), and metal volume (MV), on the fluorescence intensity (FI) of the produced complexes. The obtained data showed that pH was the most significant variable. A blend of pH = 5.0, MV = 2.0 mL, T = 25°C, and CT = 10 min was used to achieve the maximum FI. FT-IR and Raman analyses were performed for the crystals of the as-prepared complexes. Obtained data showed shifting in most of the absorption bands, confirming the complexation of ORLX with both metal ions. Job’s method showed that the stoichiometry for the reaction of ORLX with Sm(III) and Tb(III) was 1 : 1. The proposed method was validated following the ICH guidelines. Injection formulation was analyzed successfully with the developed method with high recovery (99.42–100.91%). The detection and quantification limits were 0.987 and 3.289 ng/mL for the ORLX-Sm(III) complex and 1.020 and 3.399 ng/mL for the ORLX-Tb(III) complex, respectively.

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“…The literature survey reveals that, some visible spectrophotometric [4][5][6] , HPLC [7][8][9][10][11] , electrochemical 12,13 and spectrofluorimetric 14 Lanthanide-sensitized luminescence 15 is a characteristic phenomenon where lanthanide ions Terbium (Tb 3+ ) and Europium (Eu 3+ ) form stable chelates with organic ligands. The luminescenceof these lanthanide chelates is characterized by large stock's shift, narrow emission bands and long fluorescence life times, so it has been used successfully for spectrofluorimetric determination of certain organic analytes as fluoroquinolones [16][17][18] , tetracycline 19 , fexofenadine 20 , and DNA 21 . Some organic compounds can quench the back ground luminescence of lanthanide ions especially when they are in the form of chloride salts, because the probability of collisions leading to energy transfer is larger for the chloride salts 15 .…”

Section: Introductionmentioning

confidence: 99%

Spectrofluorimetric Determination of Nepafenac Through Quenching Lanthanide Luminescence in Drug Substance and in Ophthalmic Suspension

Rizk

Attia

Hussien

et al. 2020

Journal of Advanced Pharmacy Research

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Objective: A simple, selective and sensitive spectrofluorometric method is established for the quantitative assay of Nepafenac (NEPA) in pure form and in ophthalmic suspension dosage form. Methods: The fluorescence quenching of Terbium-Tris complex is measured at λ em580 nm after using λ ex 237 nm. The effect of pH, volume of terbium solution and reaction time on fluorescence quenching were studied. The complex formation was found to be highly dependent on the pH. The optimum fluorescence quenching was achieved by using 1.0 ml of (2 × 10-3 M) Tb 3+ solution and 1.0 ml of Tris buffer solution (pH 10.0). Results: The formed complex was stable for 15 minutes from the starting time of the reaction at room temperature. The fluorescence quenching of Terbium-Tris complex was linear within the concentration range of 0.25-10 μg ml-1 with mean percentage recovery of 99.85 ± 0.77 and Correlation Coefficient of 0.9996 (n=5). The sensitivity of the method could be evaluated by limit of detection (LOD) (0.008 µg ml-1) and limit of quantitation (LOQ) (0.024 µg ml-1). Conclusion: Statistical comparison of the results with those of a reported method revealed good agreement.

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Luminescence enhancement effect for the determination of balofloxacin with balofloxacin–europium (III)–sodium dodecylbenzene sulfonate system

Cited by 17 publications

References 13 publications

Determination of epristeride by its quenching effect on the fluorescence of L -tryptophan

Determination of epristeride by its quenching effect on the fluorescence of L -tryptophan

Application of Samarium- and Terbium-Sensitized Luminescence via a Multivariate-Based Approach for the Determination of Orbifloxacin

Spectrofluorimetric Determination of Nepafenac Through Quenching Lanthanide Luminescence in Drug Substance and in Ophthalmic Suspension

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