Luminol Chemiluminescence Profile of O/W Emulsions during Thermal Oxidation

Wada, Mitsuhiro; Yamaguchi, A.; Ogawa, Akihiro; Kido, Hirotsugu; Nakamura, Shinichi; Takada, Makoto; Kawakami, Shigeru; Kuroda, Naotaka; Nakashima, Kenichiro

doi:10.2116/analsci.33.249

Cited by 4 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, the CL method has other worthy advantages, including a wide dynamic range, a simple apparatus and a rapid detection process. On the other hand, the catalytic activity of AuCu NCs on the more common CL reaction, luminol-H2O2, 42 was examined and applied for the detection of H2O2. The results are indicated in Table S2.…”

Section: Analytical Applicationsmentioning

confidence: 99%

Rhodamine B Chemiluminescence Improved by Mimetic AuCu Alloy Nanoclusters and Ultrasensitive Measurement of H2O2, Glucose and Xanthine

Mokhtarzadeh

Abolhasani

2019

ANAL. SCI.

View full text Add to dashboard Cite

The less stability and robustness, high-cost preparation and maintenance of natural enzymes, especially horseradish peroxidase (HRP), challenge researchers to introduce effective alternatives for their wide applications. Herein, the peroxidase-like activity of AuCu bimetal nanoclusters (AuCu NCs) was investigated in the rhodamine B-H2O2 chemiluminescence (CL) system. AuCu NCs could effectively catalyzed the CL reaction, and a high intensive emission intensity was obtained. A comprehensive study was implemented to examine the effects of different stabilizing ligands and Au/Cu ratios on the catalytic activity of obtained NCs. Comparison experiments were also expanded to include Au and Cu nanoparticles with different sizes, too. The results verified the superior catalytic activity of penicillaminestabilized AuCu bimetal NCs containing 50% cu atoms. Finally, the analytical application of the introduced CL system showed great sensitivity for H2O2 detection, with a detection limit of 0.13 nM. Moreover, the developed CL method was able to measure glucose and xanthine over wide concentration ranges of 0.1-400 and 0.1-200 μM, respectively. The method also indicated satisfactory reliability, confirmed by standard reference materials.

show abstract

Section: Analytical Applicationsmentioning

confidence: 99%

Rhodamine B Chemiluminescence Improved by Mimetic AuCu Alloy Nanoclusters and Ultrasensitive Measurement of H2O2, Glucose and Xanthine

Mokhtarzadeh

Abolhasani

2019

ANAL. SCI.

View full text Add to dashboard Cite

show abstract

“…[14][15][16] Among those methods, CL, which is a trace analytic method based on the determination of light emission generated in a chemical reaction, possesses advantages, such as simple instrumentation, high sensitivity, and wide linear range. [17][18][19] Traditional CL methods for the detection of Hg 2+ were based on an enhancement effect (or inhibitory effect) of Hg 2+ on the CL reaction. 20 Those traditional CL methods commonly suffered from poor selectivity.…”

Section: Introductionmentioning

confidence: 99%

Sensitive Chemiluminescent Sensing Method for Mercury(II) Ions Based on Monolayer Molybdenum Disulfide

et al. 2019

View full text Add to dashboard Cite

A simple and sensitive chemiluminescent (CL) sensing platform for mercury(II) ions (Hg 2+) in water was developed based on monolayer molybdenum disulfide (MoS2). The layered MoS2 can catalyze the oxidation of luminol by H2O2, producing an enhanced CL signal because of the peroxidase-like activity of the layered MoS2. In addition, MoS2 has a good adsorption ability to Hg 2+ because of the inherent affinity of Hg 2+ to sulfur contained in MoS2. Interestingly, the pre-incubation of Hg 2+ with layered MoS2 inhibited the catalytic activity of MoS2 on the luminol-H2O2-MoS2 CL reaction, leading to CL quenching. The CL intensity decreased linearly with increasing concentration of Hg 2+ from 0.005-40 μM. The limit of detection (LOD) was estimated to be 1 nM. The relative standard deviation (RSD) was found to be 3.71%, indicating good reproducibility. The recoveries of Hg 2+ spiked in tap water were from 100.0 to 116.0% with RSD from 2.7 to 5.6%, detected by the standard addition method, and demonstrated good applicability.

show abstract

“…Moreover, according to the differences in the density between the droplets and the medium in a continuous phase, dispersed droplets can move to the top or the bottom, which is referred to as creaming or sedimentation, respectively [1]. Many studies concerning emulsions appear in the literature, including recent reports on the coalescence of emulsion droplets [2,3], the monitoring of interfacial lipid oxidation in emulsions [4], an examination into the luminol chemiluminescence profiles of emulsions [5], and a determination of the electrostatic potential of droplets [6].…”

Section: Introductionmentioning

confidence: 99%

Development of Multiphoton Ionization Time-of-Flight Mass Spectrometry for the Detection of Small Emulsion Droplets

2018

View full text Add to dashboard Cite

A system for measuring small oil droplets in an oil-in-water (O/W) emulsion was developed using multiphoton ionization time-of-flight mass spectrometry. In the present study, a capillary column with an inner diameter of 15 µm was used for sample introduction. Moreover, a compact microscopic system was constructed for observing an emulsion flowing through a capillary column. As a result, the length for sample introduction was shortened, which is preferable for the direct evaluation of an emulsion. Using this system, the minimum diameter of a detectable toluene droplet in an O/W emulsion was decreased to 1.7 µm. The present system could be used to evaluate the local microenvironment and stability of an emulsion.

show abstract

Luminol Chemiluminescence Profile of O/W Emulsions during Thermal Oxidation

Cited by 4 publications

References 17 publications

Rhodamine B Chemiluminescence Improved by Mimetic AuCu Alloy Nanoclusters and Ultrasensitive Measurement of H2O2, Glucose and Xanthine

Rhodamine B Chemiluminescence Improved by Mimetic AuCu Alloy Nanoclusters and Ultrasensitive Measurement of H2O2, Glucose and Xanthine

Sensitive Chemiluminescent Sensing Method for Mercury(II) Ions Based on Monolayer Molybdenum Disulfide

Development of Multiphoton Ionization Time-of-Flight Mass Spectrometry for the Detection of Small Emulsion Droplets

Contact Info

Product

Resources

About