A novel flow injection chemiluminescence determination of Cr(VI) with Dichlorotris(1,10-phenanthroline)ruthenium(II)

Luaces, M.D.; Martinez, Noelia; Granda, M.; Valdés, A.; Pérez-Conde, C.; Gutiérrez, Ángel

doi:10.1016/j.talanta.2011.07.023

Cited by 17 publications

(9 citation statements)

References 22 publications

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“…The effect of flow rate was also studied. Flow rate is an important factor in a flow injection CL system . An optimal flow rate for delivery is necessary for maximal collection of the emitted light in the flow cell.…”

Section: Resultsmentioning

confidence: 99%

Flow injection chemiluminescence determination of 2‐methoxyestradiol based on inhibition of luminol‐potassium ferricyanide reaction

et al. 2012

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A novel flow-injection chemiluminescence (FI-CL) method is described for the determination of 2-methoxyestradiol (2-ME). The method is based on the inhibitory effect of 2-ME on the CL reaction of luminol and potassium ferricyanide in alkaline solution. Under optimal conditions, net CL intensity was proportional to 2-ME concentration in synthetic and mouse plasma samples. Corresponding linear regression equations were 8.0 x 10(-9) -1.0 x 10(-7) g/mL for synthetic samples and 2.0 x 10(-9) -1.0 x 10(-7) g/mL for plasma samples. Detection limit for synthetic samples and limits for quantification of plasma samples were 8.4 x 10(-10) g/mL (3σ) for synthetic samples and 4.0 x 10(-9) g/mL for mouse samples. A complete analysis was performed for 60 s, including washing and sampling, resulting in a throughput of ≈ 60/h. The proposed method was applied for the determination of 2-ME in synthetic and mouse plasma samples. Percentage recoveries were 101.0-102.8% and 98.0-105.0%, respectively. A possible mechanism responsible for CL reaction is proposed.

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Section: Resultsmentioning

confidence: 99%

Flow injection chemiluminescence determination of 2‐methoxyestradiol based on inhibition of luminol‐potassium ferricyanide reaction

et al. 2012

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“…The flow rate is an important factor in the FI‐CL system . An optimum flow rate is necessary for the maximum collection of emitted light in the flow cell.…”

Section: Resultsmentioning

confidence: 99%

Determination of ferulic acid by flow injection chemiluminescence analysis based on enhancement of the N‐bromobutanimide–eosin–CrCl₃ system in alkaline solution

et al. 2013

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A simple and sensitive flow injection chemiluminescence method has been developed for the determination of ferulic acid (FA) based on the significant enhancement effect of FA on the CL signal of the N-bromobutanimide (NBS)-eosin-CrCl3 system in alkaline solution. Under optimum conditions, the enhanced CL intensity is linearly related to the concentration of FA in its pharmaceutical preparations and human plasma samples. The corresponding linear regression equations were established over the 4.0 × 10(-10)-1.0 × 10(-7) g/mL for FA tablets and 2.0 × 10(-10)-1.0 × 10(-7) g/mL for plasma samples. The limit of detection for FA tablets and limit of quantification for plasma samples were 2.8 × 10(-10) g/mL (3 σ) and 3.04 × 10(-10) g/mL (10 σ), respectively. A complete analysis could be performed within 40 s, including washing and sampling, giving a throughput of ≈90/h. The proposed method was successfully applied to the determination of FA in pharmaceutical preparations and human plasma samples with satisfactory results. The recoveries of pharmaceutical preparations and human plasma samples at three different concentrations were 97.8-102.6% and 96.7-104.0%, respectively. Furthermore, the possible mechanism of CL reactions was also discussed briefly.

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“…8,9 To monitor the quality of drinking water and lower risks of industrial wastes, analytical methods with high sensitivity and a fast response are required to ensure adequate Cr determination at low levels. To this end, various analytical methods have been developed to quantify Cr levels in different sample matrices, including atomic absorption spectrometry (AAS), 10 inductively coupled plasma atomic emission spectrometry/mass spectrometry (ICP-AES/MS), 11,12 chemiluminescence, 13 and chromatography. 14 These methods offer reasonable sensitivities and selectivities at the expense of their high cost and complicated procedures.…”

Section: Introductionmentioning

confidence: 99%

Carbon dots based dual-emission silica nanoparticles as ratiometric fluorescent probe for chromium speciation analysis in water samples

et al. 2018

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A simple and effective strategy for designing a ratiometric fluorescent nanosensor was described. A carbon dots (CDs) based dual-emission nanosensor for chromium speciation analysis was developed by coating CDs on the surface of dye-doped silica nanoparticles. The fluorescence of the resulting dual-emission silica nanoparticles was quenched in acetic acid through potassium bromate (KBrO3) oxidation. Cr(VI) was able to catalyze KBrO3 oxidation, resulting in ratiometric fluorescence accelerated quenching response of the dual-emission silica nanoparticles. Several important parameters affecting the nanosensor performance, including acid type, concentrations of KBrO3, and reaction temperature and time were examined. Under the optimized conditions, the detection limit of the nanosensor towards Cr(VI) reached 1.3 ng mL−1, and pretty good linearity was obtained between 20 to 500 ng mL−1. More importantly, the sensor was found suitable for speciation analysis of both Cr(III) and Cr(VI) in different water samples with satisfactory results.

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A novel flow injection chemiluminescence determination of Cr(VI) with Dichlorotris(1,10-phenanthroline)ruthenium(II)

Cited by 17 publications

References 22 publications

Flow injection chemiluminescence determination of 2‐methoxyestradiol based on inhibition of luminol‐potassium ferricyanide reaction

Flow injection chemiluminescence determination of 2‐methoxyestradiol based on inhibition of luminol‐potassium ferricyanide reaction

Determination of ferulic acid by flow injection chemiluminescence analysis based on enhancement of the N‐bromobutanimide–eosin–CrCl₃ system in alkaline solution

Carbon dots based dual-emission silica nanoparticles as ratiometric fluorescent probe for chromium speciation analysis in water samples

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A novel flow injection chemiluminescence determination of Cr(VI) with Dichlorotris(1,10-phenanthroline)ruthenium(II)

Cited by 17 publications

References 22 publications

Flow injection chemiluminescence determination of 2‐methoxyestradiol based on inhibition of luminol‐potassium ferricyanide reaction

Flow injection chemiluminescence determination of 2‐methoxyestradiol based on inhibition of luminol‐potassium ferricyanide reaction

Determination of ferulic acid by flow injection chemiluminescence analysis based on enhancement of the N‐bromobutanimide–eosin–CrCl3 system in alkaline solution

Carbon dots based dual-emission silica nanoparticles as ratiometric fluorescent probe for chromium speciation analysis in water samples

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Determination of ferulic acid by flow injection chemiluminescence analysis based on enhancement of the N‐bromobutanimide–eosin–CrCl₃ system in alkaline solution