Analytical aspects of smart (phone) fluorometric measurements

Granica, Mateusz; Tymecki, Łukasz

doi:10.1016/j.talanta.2019.01.032

Cited by 32 publications

(16 citation statements)

References 34 publications

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“…In recent years, meanwhile, several paper sensors combined with smartphone, which featured their portability, high-quality imaging mode, and the potential to holding kinds of APP, have been applied for tracing various target species. − The sensing strategy based on smartphone proved its efficacy for detection comparing with that of only paper sensors. However, most reported smartphone sensing processes still rely on the handheld UV lamp and dark environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

A Portable Smartphone Platform Using a Ratiometric Fluorescent Paper Strip for Visual Quantitative Sensing

Chu

Wang

Xiao

et al. 2020

ACS Appl. Mater. Interfaces

228

101

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Instrument-free, portable, and direct read-out minidevices have wider application prospects in various fields, especially for real-time/on-site sensing. Herein, combined with a paper strip, a smartphone sensing platform integrated with a UV lamp and dark cavity by 3D-printing technology has been developed for the rapid, sensitive, instrument-free, and visual quantitative analysis in real-time/on-site conditions. The platform proved the feasibility for visual quantitative detection of pesticide via a fluorescence "on−off−on" response with a single dualemissive ratiometric paper strip. Red-emitting CdTe quantum dots (rQDs) were embedded into the silica nanoparticles (SiO 2 NPs) as an internal reference, while blue-emitting carbon dots (bCDs) as a signal report unit were covalently linked to the outer surface of SiO 2 NPs. The blue fluorescence could be quenched by gold nanoparticles (Au NPs) and then recovered with pesticide. The red (R), green (G), and blue (B) channel values of the generated images were determined by a color recognizer application (APP) installed in the smartphone, and the R/B values could be used for pesticide quantification with a sensitive detection limit (LOD) of 59 nM. The smartphone sensing platform based on 3D printing might provide a general strategy for visual quantitative detection in a variety of fields including environments, diagnosis, and safety monitoring.

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Section: Introductionmentioning

confidence: 99%

A Portable Smartphone Platform Using a Ratiometric Fluorescent Paper Strip for Visual Quantitative Sensing

Chu

Wang

Xiao

et al. 2020

ACS Appl. Mater. Interfaces

228

101

View full text Add to dashboard Cite

show abstract

“…Further, the integration of SP with different portable sensing devices has provided globally accepted platforms for end‐users to perform different complicated analysis of utility with ease and simplicity. [ 3,97 ] Some SP based MFDs reported for food safety analysis have been summarized in Table 1 .…”

Section: Mfs In Food and Agriculturementioning

confidence: 99%

“…Recent advances in emerging technologies such as paper‐based assays, [ 2 ] smart‐phone (SP) based technologies, continuous environment monitoring devices, and on‐site monitoring systems are leading to rapid and miniaturized analysis systems. [ 3 ] Currently, SP based technologies have emerged as the futuristic smart devices for affordable personalized healthcare and are highly promising interfaces for other area like food quality monitoring. [ 4,5 ] The development of low cost and disposable paper‐based MFDs, integrated with novel assay formats, have resulted in decreased time for testing and complexity of diagnostic tests.…”

Section: Introductionmentioning

confidence: 99%

Emerging Trends in Microfluidics Based Devices

Solanki

Pandey

Gupta

et al. 2020

Biotechnology Journal

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One of the major challenges for scientists and engineers today is to develop technologies for the improvement of human health in both developed and developing countries. However, the need for cost-effective, high-performance diagnostic techniques is very crucial for providing accessible, affordable, and high-quality healthcare devices. In this context, microfluidic-based devices (MFDs) offer powerful platforms for automation and integration of complex tasks onto a single chip. The distinct advantage of MFDs lies in precise control of the sample quantities and flow rate of samples and reagents that enable quantification and detection of analytes with high resolution and sensitivity. With these excellent properties, microfluidics (MFs) have been used for various applications in healthcare, along with other biological and medical areas. This review focuses on the emerging demands of MFs in different fields such as biomedical diagnostics, environmental analysis, food and agriculture research, etc., in the last three or so years. It also aims to reveal new opportunities in these areas and future prospects of commercial MFDs.

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“…Smartphones are extensively employed in daily life as image acquisition tools because they are portable, with multiple data transmission functions and high storage capacity [ 44 ]. Digital image data acquired from image software can considerably enhance detection accuracy [ 45 , 46 ]. Digital image analysis has been applied in various fields including environmental monitoring, food safety and clinical analysis due to its convenience, stability, low cost and flexibility [ 47 , 48 ].…”

Section: Introductionmentioning

confidence: 99%

A Simple and Reliable Dispersive Liquid-Liquid Microextraction with Smartphone-Based Digital Images for Determination of Carbaryl Residues in Andrographis paniculata Herbal Medicines Using Simple Peroxidase Extract from Senna siamea Lam. Bark

et al. 2022

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A simple and reliable dispersive liquid-liquid microextraction (DLLME) coupled with smartphone-based digital images using crude peroxidase extracts from cassia bark (Senna siamea Lam.) was proposed to determine carbaryl residues in Andrographis paniculata herbal medicines. The method was based on the reaction of 1-naphthol (hydrolysis of carbaryl) with 4-aminoantipyrine (4-AP) in the presence of hydrogen peroxide, using peroxidase enzyme simple extracts from cassia bark as biocatalysts under pH 6.0. The red product, after preconcentration by DLLME using dichloromethane as extraction solvent, was measured for blue intensity by daily life smartphone-based digital image analysis. Under optimized conditions, good linearity of the calibration graph was found at 0.10–0.50 mg·L−1 (r2 = 0.9932). Limits of detection (LOD) (3SD/slope) and quantification (LOQ) (10SD/slope) were 0.03 and 0.09 mg·L−1, respectively, with a precision of less than 5%. Accuracy of the proposed method as percentage recovery gave satisfactory results. The proposed method was successfully applied to analyze carbaryl in Andrographis paniculata herbal medicines. Results agreed well with values obtained from the HPLC-UV method at 95% confidence level. This was simple, convenient, reliable, cost-effective and traceable as an alternative method for the determination of carbaryl.

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Analytical aspects of smart (phone) fluorometric measurements

Cited by 32 publications

References 34 publications

A Portable Smartphone Platform Using a Ratiometric Fluorescent Paper Strip for Visual Quantitative Sensing

A Portable Smartphone Platform Using a Ratiometric Fluorescent Paper Strip for Visual Quantitative Sensing

Emerging Trends in Microfluidics Based Devices

A Simple and Reliable Dispersive Liquid-Liquid Microextraction with Smartphone-Based Digital Images for Determination of Carbaryl Residues in Andrographis paniculata Herbal Medicines Using Simple Peroxidase Extract from Senna siamea Lam. Bark

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