Determination of norfloxacin using gold nanoparticles catalyzed cerium(IV)–sodium sulfite chemiluminescence

Yu, Xiaojiang; Bao, Jun-Fang

doi:10.1016/j.jlumin.2009.04.025

Cited by 47 publications

(19 citation statements)

References 24 publications

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“…However, the CL intensity is very weak due to the low luminescence efficiency of SO 2 *. It is reported that the energy of the excited SO 2 * could be efficiently transferred Scheme 1 Schematic illustration of possible mechanism of Cysteine inhibiting the Ce (IV)-Na 2 SO 3 -Ag NCs chemiluminescence system to a fluorophore whose absorption band falls in the range of 300-450 nm [29,30], which can be used to enhance the CL intensity. Meanwhile, the fluorescent Ag NCs can easily exhibit visible luminescence under a wide range of excitation wavelength.…”

Section: Selectivity and Interference Measurementsmentioning

confidence: 99%

A sensitive chemiluminescence method for the determination of cysteine based on silver nanoclusters

Wang

Xiang-nan

et al. 2012

Microchim Acta

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We have developed a sensitive chemiluminescent (CL) assay for cysteine. It is based on the use of watersoluble and fluorescent silver nanoclusters (Ag NCs) which are found to be able to strongly enhance the weak CL signal resulting from the redox reaction between Ce(IV) ion and sulfite ion. This enhancement is inhibited by cysteine under appropriate conditions. Taking advantage of this specific CL inhibition, a novel CL method for the sensitive and selective detection of cysteine was developed. This effect is interpreted in terms of an electronic energy transfer from excited state intermediate sulfur dioxide (originating from the CL reaction between Ce(IV) and sulfite ions) to the Ag-NCs. The latter become electronically excited and thus can act as a new source of emission. The method was applied to the determination of cysteine in the range from 5.0 nM to 1.0 μM, with a detection limit at 2.5 nM (S/N03).

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Section: Selectivity and Interference Measurementsmentioning

confidence: 99%

A sensitive chemiluminescence method for the determination of cysteine based on silver nanoclusters

Wang

Xiang-nan

et al. 2012

Microchim Acta

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“…The oxidized nitrazepam* and Rh6G could be absorbed to the surface of AgNPs, and the distance between them was much shortened. 18,22 In this way, it was easy for the energy to be transferred from oxidized nitrazepam* to the ground state of Rh6G. Therefore, it was an advantage for the ground state of Rh6G to gain more energy from oxidized nitrazepam* and to produce more Rh6G*.…”

Section: Possible CL Mechanismmentioning

confidence: 99%

Silver Nanoparticle Enhanced Chemiluminescence Method for the Determination of Nitrazepam

Han

Wei

2014

ANAL. SCI.

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We report on a simple and sensitive chemiluminescence (CL) method to determine nitrazepam. This method is based on the fact that rhodamine 6G (Rh6G) enhanced the weak CL emission of the reaction of hexacyanoferrate with nitrazepam, and that it was further enhanced by silver nanoparticles (AgNPs). The effects of the concentrations of K3Fe(CN)6, Rh6G, AgNPs and NaOH on the CL reaction were investigated. Under the optimum conditions, the CL intensity was proportional to the concentration of nitrazepam in the range from 1.0 nM to 10.0 μM. The detection limit (3σ) was at 0.1 nM. The relative standard deviation was 2.1% (at a 0.1 μM concentration and for n = 11). The method was successfully applied to the determination of nitrazepam in Coca-Cola beverage, urine and plasma, and the recovery was 98 -103%. We also considered the possible CL reaction mechanism.

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“…Nanoparticles (NPs) have recently attracted strong research attention because of their unique physical and chemical properties. Moreover, NPs are used as nanocatalysts to enhance a variety of CL reactions [21][22][23][24][25][26]. With the development of nanotechnology, researchers demonstrated that the NPs-catalyzed CL system offered potential applications in analytical chemistry.…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticle-Enhanced Chemiluminescence Method for Determining Naproxen Based on Europium(III)-Sensitized Ce(IV)-Na2S2O4 Reaction

et al. 2012

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A simple and sensitive chemiluminescence (CL) method coupled with flow-injection technique is proposed to determine naproxen (NAP). The method is based upon the enhancement of the weak CL signal arising from the reaction of Ce(IV) and Na(2)S(2)O(4) with Eu(3+) to form the Eu(3+)-Ce(IV)-Na(2)S(2)O(4) system. The CL intensity was significantly increased by the introduction of NAP into this system in the presence of silver nanoparticles (Ag NPs). Examination of the recorded UV-vis spectra and fluorescence spectra indicated that the energy of the intermediate SO(2)*, which originated from the redox reaction of Ce(IV) and Na(2)S(2)O(4), was transferred to Eu(3+) via NAP and that the process was accelerated by Ag NPs due to their catalytic activity. Under the optimum conditions, the CL intensity was increased with increasing NAP concentration and the correlation was linear (r = 0.9992) over the NAP concentration range of 1-420 ng mL(-1). The limit of detection (LOD) was 0.11 ng mL(-1) with a relative standard deviation (RSD) of 1.15% for 5 replicate determinations of 200 ng mL(-1) NAP. The method was successfully applied to determine NAP in pharmaceutical and biological samples.

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Determination of norfloxacin using gold nanoparticles catalyzed cerium(IV)–sodium sulfite chemiluminescence

Cited by 47 publications

References 24 publications

A sensitive chemiluminescence method for the determination of cysteine based on silver nanoclusters

A sensitive chemiluminescence method for the determination of cysteine based on silver nanoclusters

Silver Nanoparticle Enhanced Chemiluminescence Method for the Determination of Nitrazepam

Silver Nanoparticle-Enhanced Chemiluminescence Method for Determining Naproxen Based on Europium(III)-Sensitized Ce(IV)-Na2S2O4 Reaction

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