Chemiluminescence detection coupled to capillary electrophoresis

Garcı́a-Campaña, Ana M.; Lara, Francisco J.; Gámiz‐Gracia, Laura; Huertas-Pérez, José F.

doi:10.1016/j.trac.2009.05.003

Cited by 61 publications

(45 citation statements)

References 76 publications

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“…If this tendency in the number of papers and citations is maintained, 2011 will be the most relevant year so far (Figure 4, right). Several recent reviews are concerned with analytical applications of chemiluminescence in general, including the peroxyoxalate system, [77][78][79] however, one recent review is dedicated specifically to application of the peroxyoxalate reaction, including its utilizations together with techniques like high performance liquid chromatography, flow injection systems and capillary electrophoresis. 77 The use of micelles, reversed micelles and microemulsions as reaction medium for the peroxyoxalate chemiluminescence has also been reviewed and the simplicity and low cost as well as the high sensitivity of this methodology were emphasized.…”

Section: Analytical Applications Of Peroxyoxalate Chemiluminescencementioning

confidence: 99%

The chemiluminescent peroxyoxalate system: state of the art almost 50 years from its discovery

Francisco¹,

Ciscato²,

Augusto³

et al. 2012

Arkivoc

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Almost fifty years after the discovery of the peroxyoxalate reaction by E. A. Chandross in the early nineteen sixties, this review article intends to give a general overview on mechanistic aspects of this system and to describe the principles of its analytical application. After a short general introduction on the principles of chemiluminescence and the history of peroxyoxalate discovery, mechanistic aspects of high-energy intermediate formation, its structure and its reaction with an activator in the peroxyoxalate system are discussed. Finally, analytical applications of peroxyoxalate chemiluminescence are exemplified using representative recent examples, including oxalic acid detection in biological samples.

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Section: Analytical Applications Of Peroxyoxalate Chemiluminescencementioning

confidence: 99%

The chemiluminescent peroxyoxalate system: state of the art almost 50 years from its discovery

Francisco¹,

Ciscato²,

Augusto³

et al. 2012

Arkivoc

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“…Luminol was obtained from Shaanxi Normal University (Xi'an, China) and was prepared in 0.01 M stock solution. K 3 Fe(CN) 6 and borate were purchased from Shanghai Chemical Factory (Shanghai, China) and 0.01 M of their stock solutions were prepared in water, respectively. Epicatechin, rutin, and quercetin were purchased from the Institute for Drugs and Biological Products Testing (Beijing, China), and their stock solutions (1000 μg mL −1 ) were prepared in water, respectively.…”

Section: Reagents and Solutionsmentioning

confidence: 99%

“…The post-column CL reagent was 1.25 mM K 3 Fe(CN) 6 in 0.12 M NaOH medium. All solutions were filtered through a 0.45-μm membrane prior to use.…”

Section: Reagents and Solutionsmentioning

confidence: 99%

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Ultrasensitive determination of epicatechin, rutin, and quercetin by capillary electrophoresis chemiluminescence

Wang¹,

Wang²,

Han³

2012

Acta Chromatographica

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Summary. An ultrasensitive and rapid method for the determination of epicatechin, rutin, and quercetin was developed using capillary zone electrophoresis with on-line chemiluminescence detection. Under the optimal conditions, the analytes were baseline separated within 12 min. The limits of detection in turn were 0.60 pg mL −1 for epicatechin, 0.50 pg mL −1 for rutin, and 1.0 pg mL −1 for quercetin. The developed method was an easy and reliable method of determining these analytes concentrations in tea, extract Ginkgo biloba, and rutin tablet, demonstrating the feasibility and reliability of the proposed method.

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“…Compared to other analytical techniques [5] CL possesses significant advantages such as simplicity, low cost and high sensitivity and selectivity [5]. Consequently, CL-based detection has become considered as a quite useful and interesting technique for scientists in a wide variety of disciplines [29][30][31]. But in spite of great advantages of CLbased detection system, this technique has been still limited because of limitations such as low selectivity; small sensitivity and/or less improved detection limit [5].…”

Section: Introductionmentioning

confidence: 99%

Aerosol Hygroscopic Growth as a New Factor for Trace and Ultra-Trace Determination of Phosphorous in Flame Containing Optical Trapping-Cavity Ring-Down Spectroscopy

Doroodmand¹,

Ghasemi²

2017

J Anal Bioanal Tech

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A new method has been introduced based on aerosol hygroscopic growth as a new factor for trace and ultra-trace determination of phosphorous in flame containing optical trapping-cavity ring down aerosol extinction (emission) spectrometer (OT-CRD-AES). In this study, a cavity ring down has been designed using hydrogen and air as fuel and oxidant during introduction of the aerosols containing phosphorous species using an ultrasonic generator (humidifier) from an acidic solution by a flow rate of N 2 , followed by detection of the Mie scattering using a charged coupling device (CCD) system. Parameters having strong influence during following scattering of the aerosols during their hygroscopic growth inside the humidified flame (H 2 /air), include: influence and amount of Na + as radiation buffer (as light source), flow rates of H 2 , air and N 2 , kind and concentrations of acid, evaluation of the aerosols inside flame, etc. These parameters were optimized using simplex and one at a time methods. Based on the figures of merit under optimized condition, two linear calibration curves with reverse slopes were evaluated between 10.0 -250.0 ng mL -1 and 1.0 -20.0 µg mL -1 with correlation coefficients (R 2 ) the same as 0.999 and 0.998, respectively. The calibration sensitivities were also estimated to 57.46 and 0.348 (a.u), respectively, with detection limit of 5.0 ng mL -1 . The mechanism of the radiation (Mie scattering) was also evidenced based on i) dependency of the scattered radiations to the quantity of an alkali ions such as Na+ as well as the humidity, ii) presence of acceptable correlation between the response of the cavity with turbidometry, iii) observation of blue shift from green (color related to the luminescence of HPO* in H 2 /air flame) to blue (scattered radiation) and finally iv) effect of hydration number during stability and growth of the aerosols inside the flames.No serious interference was evaluated during analysis of at least 500-fold excess of various foreign species. However, the only observed interference was evaluated during introduction of 200-fold excess of SO 4 2-. Good correlation was also evaluated between the results obtained from this technique and ion exchange chromatography during analysis of wastewater samples that clearly revealed the reliability of this method for phosphorous detection and determination at µg mL -1 and ng mL -1 levels.

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Chemiluminescence detection coupled to capillary electrophoresis

Cited by 61 publications

References 76 publications

The chemiluminescent peroxyoxalate system: state of the art almost 50 years from its discovery

The chemiluminescent peroxyoxalate system: state of the art almost 50 years from its discovery

Ultrasensitive determination of epicatechin, rutin, and quercetin by capillary electrophoresis chemiluminescence

Aerosol Hygroscopic Growth as a New Factor for Trace and Ultra-Trace Determination of Phosphorous in Flame Containing Optical Trapping-Cavity Ring-Down Spectroscopy

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