Simultaneous, sensitive and selective on-line chemiluminescence determination of Cr(III) and Cr(VI) by capillary electrophoresis

Yang, Weiping; Zhang, Zhujun; Deng, Wei

doi:10.1016/s0003-2670(03)00421-5

Cited by 55 publications

(28 citation statements)

References 36 publications

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“…22 The results showed that the first mixing mode presented better sensitivity than that of the latter. The possible reason was that in CE the sample volume injected is very small (nl); thus, light loss resulting from the pre-mixture stream of luminol and oxidant, which must flow through a 4 cm distance from four-way joints to detection before meeting with the analytes, might significantly affect on the detective efficiency.…”

Section: Mixing Mode Of the Analytes And The CL Reagentmentioning

confidence: 96%

Capillary Electrophoresis with Chemiluminescence Detection of Rutin and Chlorogenic Acid Based on Its Enhancing Effect for the Luminol-Ferricyanide System

Han

2005

ANAL. SCI.

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Section: Mixing Mode Of the Analytes And The CL Reagentmentioning

confidence: 96%

Capillary Electrophoresis with Chemiluminescence Detection of Rutin and Chlorogenic Acid Based on Its Enhancing Effect for the Luminol-Ferricyanide System

Han

2005

ANAL. SCI.

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“…So the CL systems based on the reactions of luminol have been widely used in the quantitative determinations of many inorganic and organic compounds. [22][23][24][25] Commonly, the mechanism of luminol-H 2 O 2 CL system is suggested due to the reaction of luminol radical with superoxide anion (O 2…”

Section: Possible CL Reaction Mechanismmentioning

confidence: 99%

Utilization of a novel Ag(III)-luminol chemiluminescence system for determination of d-penicillamine in human urine samples

Ma¹,

Fan²,

Xu³

et al. 2011

J. Braz. Chem. Soc.

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. O desvio padrão relativo é 0,23% para 11 repetições de 0,06 μg mL -1 de d-penicilamina. O método tem sido aplicado com sucesso às determinações de d-penicilamina em preparações farmacêuticas e amostras de urina, proporcionando resultados satisfatórios. Com base nos espectros de quimioluminescência e no experimento de aprisionamento de radicais livres realizado neste trabalho, um possível mecanismo de reação para esse sistema reacional é sugerido.A novel sensitive chemiluminescence (CL) system ([Ag(HIO 6 ) 2 ] 5− -luminol reaction system), coupled with a flow injection, is introduced for determination of d-penicillamine. The system is based on the enhancement effect of chemiluminescence reaction by penicillamine in alkaline medium. Under the optimum conditions, the CL intensity is proportional to the concentrations of d-penicillamine with a good linearity. The linear range covers 1.5-150 ng mL -1 and the limit of detection of the method is 0.8 ng mL -1 . The relative standard deviation is 0.23% for 11 repeated measurements of 0.06 μg mL -1 d-penicillamine. The method has been successfully applied to the determinations of d-penicillamine in pharmaceutical preparations and urine samples, giving rise to satisfactory results. Based on the chemiluminescent spectra and free radical trapping experiment performed in this work, a possible reaction mechanism for this reaction system is suggested.

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“…Luminol-based systems in CE can be a powerful tool to check the contamination level of water samples by metal ions due to the enhancement effect of some of them in this CL emission. H 2 O 2 was used as oxidant to determine chromium(III) (Cr 31 ) and chromium(VI) (CrO 2À 4 ) in tap, surface, well, river and wastewater samples allowing the chromium speciation [124,125]. This method was based on in-capillary reduction, i.e.…”

Section: Food and Environmental Applicationsmentioning

confidence: 99%

Advances and analytical applications in chemiluminescence coupled to capillary electrophoresis

2010

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Advances and analytical applications in chemiluminescence coupled to capillary electrophoresisThe present review presents the state of the art of the developments, key strategies and analytical applications of chemiluminescence detection coupled to CE (CE-CL). Different parts considering the most common CL systems have been included, such as the tris(2,2 0 -bipyridine)ruthenium(II) system, the luminol and derivatives reaction, the peroxyoxalate CL or direct oxidations. New advances in homemade configurations and applications in different fields such as clinical, pharmaceutical, environmental and food analysis have been included. The focus is on studies which appeared from 2000 to the end of 2009.

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Simultaneous, sensitive and selective on-line chemiluminescence determination of Cr(III) and Cr(VI) by capillary electrophoresis

Cited by 55 publications

References 36 publications

Capillary Electrophoresis with Chemiluminescence Detection of Rutin and Chlorogenic Acid Based on Its Enhancing Effect for the Luminol-Ferricyanide System

Capillary Electrophoresis with Chemiluminescence Detection of Rutin and Chlorogenic Acid Based on Its Enhancing Effect for the Luminol-Ferricyanide System

Utilization of a novel Ag(III)-luminol chemiluminescence system for determination of d-penicillamine in human urine samples

Advances and analytical applications in chemiluminescence coupled to capillary electrophoresis

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