Foldable paper-based analytical device for membraneless gas-separation and determination of iodate based on fluorescence quenching of gold nanoclusters

Lert-itthiporn, Aurachat; Srikritsadawong, Pongpichet; Choengchan, Nathawut

doi:10.1016/j.talanta.2020.121574

Cited by 17 publications

(7 citation statements)

References 49 publications

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“…Simple, rapid, and instrument-free quantitative detection is very vital for the effective food safety control [194]. Especially, inorganic content [195][196][197] in water and food is one of the concerns by modern citizens. For example, a μPad was designed for membraneless gas-separation and iodate determination by using the bovine serum albumin-stabilized gold nanoclusters (BSA-AuNCs) [196].…”

Section: Food Safety Controlmentioning

confidence: 99%

“…Especially, inorganic content [195][196][197] in water and food is one of the concerns by modern citizens. For example, a μPad was designed for membraneless gas-separation and iodate determination by using the bovine serum albumin-stabilized gold nanoclusters (BSA-AuNCs) [196]. Based on the fact that gold core of BSA-AuNCs was etched and the red emission was quenched, the iodate was monitored by fluorometric detection with LOD of 0.005 mmol/L.…”

Section: Food Safety Controlmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Hou

Guo

et al. 2022

J. Anal. Test.

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Point-of-care testing (POCT), as a portable and user-friendly technology, can obtain accurate test results immediately at the sampling point. Nowadays, microfluidic paper-based analysis devices (μPads) have attracted the eye of the public and accelerated the development of POCT. A variety of detection methods are combined with μPads to realize precise, rapid and sensitive POCT. This article mainly introduced the development of electrochemistry and optical detection methods on μPads for POCT and their applications on disease analysis, environmental monitoring and food control in the past 5 years. Finally, the challenges and future development prospects of μPads for POCT were discussed.

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Section: Food Safety Controlmentioning

confidence: 99%

Section: Food Safety Controlmentioning

confidence: 99%

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Hou

Guo

et al. 2022

J. Anal. Test.

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show abstract

“…Benefits include lower use of reagents and energy, simplification, reduced manipulation, and enhanced sample throughput. Thus, in-drop [24] and thin film configuration [24,25] allow integrating sample cleanup, extraction, enrichment, and sensing of target analytes in a straightforward manner. Particularly, cellulose substrates, widely used in paperbased analytical devices [26], have demonstrated their convenience as platforms for simultaneous enrichment and sensing of analytes with noninstrumental detection.…”

Section: Integration Of Unitary Stepsmentioning

confidence: 99%

“…Particularly, cellulose substrates, widely used in paperbased analytical devices [26], have demonstrated their convenience as platforms for simultaneous enrichment and sensing of analytes with noninstrumental detection. Nanomaterials have been used for optical sensing [24,25], although natural indicators (e.g. butterfly pea flower extract) [27] have also found applicability in these systems.…”

Section: Integration Of Unitary Stepsmentioning

confidence: 99%

Greening sample preparation: An overview of cutting-edge contributions

Pena‐Pereira

Lavilla

Bendicho

2021

Current Opinion in Green and Sustainable Chemistry

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“…Currently, μPADs often use colorimetric 12 surface-enhanced Raman scattering 13 electrochemical methods 14 and fluorescence, 15 which can be analyzed by spectrophotometric techniques based on absorbance reflectivity or fluorescence in the test area. Among them, the paper-based fluorescence detection method has gradually become a new development trend due to its portable, rapid test, integrated detection, simple operation, and other advantages.…”

Section: ■ Introductionmentioning

confidence: 99%

Fully Inkjet Printing Preparation of a Carbon Dots Multichannel Microfluidic Paper-Based Sensor and Its Application in Food Additive Detection

Deng

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

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Microfluidic paper-based sensors as a new type of microsample detection technology are widely used in medical diagnosis, environmental monitoring, and food safety testing. Inkjet printing has the advantages of simplicity, speed, flexibility, high resolution, low cost, and efficient mass production and has become one of the most cutting-edge technologies in the manufacture of paper-based sensors. In this work, a fully inkjet printing preparation method was proposed for paper-based sensors, which can achieve high-precision, multichannel, and visual fluorescence detection. Three kinds of fluorescent carbon dots (CDs; r-CDs, b-CDs, and y-CDs) were fabricated into inkjet ink by adding a suitable ratio of solvent, PEG, and surfactant FS3100 to control its viscosity, surface tension, and other influencing factors, obtaining the best-visualized fluorescence response on paper. To optimize the full inkjet printing process of the paper-based sensor, we studied the influence of factors such as the hydrophobic material AKD formula, postprocessing conditions, and the structure of the hydrophilic and hydrophobic channels on the paper-based detection accuracy, and it was found that proper AKD concentration, curing time, and temperature can make AKD fully react with paper-based surface groups and produce more hydrophobic groups on the surface and inside of the filter paper, which can form paper-based microfluidic sensors with clear boundaries and fast transmission speed at low cost and high efficiency. The fabricated sensor is used for the fluorometric determination of vitamin C (AA), NO2 –, and sunset yellow (SY) at the same time, and the limits of visual detection by eyes are 6 mmol/L (NO2 –), 60 μmol/L (SY), and 40 mmol/L (AA). The mechanism of inkjet printing is investigated in detail, which is simple, reliable, and easy to realize mass production and can realize highly sensitive, on-site, and visual detection for food additives.

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Foldable paper-based analytical device for membraneless gas-separation and determination of iodate based on fluorescence quenching of gold nanoclusters

Cited by 17 publications

References 49 publications

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Greening sample preparation: An overview of cutting-edge contributions

Fully Inkjet Printing Preparation of a Carbon Dots Multichannel Microfluidic Paper-Based Sensor and Its Application in Food Additive Detection

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