2021

DOI: 10.1016/j.talanta.2020.121590

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Highly sensitive, selective and naked-eye detection of bromide and bromate using distance–based paper analytical device

Kamonchanok Phoonsawat

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Wijitar Dungchai

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Cited by 29 publications

(6 citation statements)

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“…All chemical solutions were prepared using high-purity water from Mill-Q ( R ≥ 18 MΩ cm). Silver hexagonal nanoprism (AgNPrs) solution was prepared according to the previously reported method . Whatman No.1 filter paper was bought from Cole-Parmer (VernonHills, IL).…”

Section: Methodsmentioning

confidence: 99%

“…Silver hexagonal nanoprism (AgNPrs) solution was prepared according to the previously reported method. 33 Whatman No.1 filter paper was bought from Cole-Parmer (VernonHills, IL).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…Microfluidic paper-based analytical devices (μPADs) have evolved into analytical platforms suited for resource-limited environments because they are easy to use and inexpensive. Currently, distance-based paper devices (dPADs) are gaining attention because analytes can be quantified without software or instrumentation. − dPADs are used to quantify analytes by measuring the length of a colored (or loss of color) band that forms along the channel. Further, measuring the color length using imaging software results in lower errors relative to colorimetric detection alone.…”

mentioning

confidence: 99%

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Distance-Based Paper Device for a Naked-Eye Albumin-to-Alkaline Phosphatase Ratio Assay

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The albumin-to-alkaline phosphatase ratio (AAPR) has been a cancer prognostic indicator. This paper presents the concept of a dual-color change distance-based paper device (dPAD) for albumin (Alb) and alkaline phosphatase (ALP) detection to evaluate this cancer prognostic index. Whereas Alb interacts with the bromocresol green (BCG) indicator to form a bluish-green complex, ALP hydrolyzes l-ascorbic acid-2-phosphate (AAP) to produce ascorbic acid (AA), which reacts with KIO3 to generate I2 and I–. I2/I– reacts with silver hexagonal nanoprisms (purple color) in the presence of Cu2+, resulting in a color change from purple to colorless. The distance of the color change from yellow to the bluish-green and purple to colorless correlates to Alb and ALP concentration, respectively. The angle index for the AAPR is then defined by drawing a straight line that connects the tops of the two changed band lengths in the detection area. The highest bluish-green color band length on the Alb region is the midpoint, which is the position set of the protractor at 0°, and the angle is measured using a simple protractor. The results indicate that an AAPR below 0.57 will have an angle greater than 40° and correlates with a risk factor for lung cancer. The naked-eye detection limits for Alb and ALP were found to be 0.8 g/L and 5 U/L (n = 10), respectively. The practical application of the developed dPAD was successfully demonstrated by Alb and ALP analysis in human serum and validated against standard methods. The proposed method does not require incubation conditions for the ALP assay, which strongly reduces the overall analysis steps and time. Moreover, our device provides a low-cost, simple, sensitive, selective, accurate, and precise determination of the AAPR.

“…All chemical solutions were prepared using high-purity water from Mill-Q ( R ≥ 18 MΩ cm). Silver hexagonal nanoprism (AgNPrs) solution was prepared according to the previously reported method . Whatman No.1 filter paper was bought from Cole-Parmer (VernonHills, IL).…”

Section: Methodsmentioning

confidence: 99%

“…Silver hexagonal nanoprism (AgNPrs) solution was prepared according to the previously reported method. 33 Whatman No.1 filter paper was bought from Cole-Parmer (VernonHills, IL).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…Microfluidic paper-based analytical devices (μPADs) have evolved into analytical platforms suited for resource-limited environments because they are easy to use and inexpensive. Currently, distance-based paper devices (dPADs) are gaining attention because analytes can be quantified without software or instrumentation. − dPADs are used to quantify analytes by measuring the length of a colored (or loss of color) band that forms along the channel. Further, measuring the color length using imaging software results in lower errors relative to colorimetric detection alone.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Distance-Based Paper Device for a Naked-Eye Albumin-to-Alkaline Phosphatase Ratio Assay

¹

,

²

,

³

et al. 2021

Self Cite

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The albumin-to-alkaline phosphatase ratio (AAPR) has been a cancer prognostic indicator. This paper presents the concept of a dual-color change distance-based paper device (dPAD) for albumin (Alb) and alkaline phosphatase (ALP) detection to evaluate this cancer prognostic index. Whereas Alb interacts with the bromocresol green (BCG) indicator to form a bluish-green complex, ALP hydrolyzes l-ascorbic acid-2-phosphate (AAP) to produce ascorbic acid (AA), which reacts with KIO3 to generate I2 and I–. I2/I– reacts with silver hexagonal nanoprisms (purple color) in the presence of Cu2+, resulting in a color change from purple to colorless. The distance of the color change from yellow to the bluish-green and purple to colorless correlates to Alb and ALP concentration, respectively. The angle index for the AAPR is then defined by drawing a straight line that connects the tops of the two changed band lengths in the detection area. The highest bluish-green color band length on the Alb region is the midpoint, which is the position set of the protractor at 0°, and the angle is measured using a simple protractor. The results indicate that an AAPR below 0.57 will have an angle greater than 40° and correlates with a risk factor for lung cancer. The naked-eye detection limits for Alb and ALP were found to be 0.8 g/L and 5 U/L (n = 10), respectively. The practical application of the developed dPAD was successfully demonstrated by Alb and ALP analysis in human serum and validated against standard methods. The proposed method does not require incubation conditions for the ALP assay, which strongly reduces the overall analysis steps and time. Moreover, our device provides a low-cost, simple, sensitive, selective, accurate, and precise determination of the AAPR.

“…Colorimetric detection is the primary technique applied in μPads, because color intensity can be realized easily by an ultraviolet-visible (UV-vis) spectrophotometer. Until now, it is widely applied in analysis of inorganic ions [105][106][107][108][109][110][111][112][113][114], biomedicals and proteins [115][116][117][118][119][120][121][122], nucleic acid and drugs [123][124][125][126][127][128][129][130][131][132][133][134][135][136], etc.…”

Section: Colorimetric Detectionmentioning

confidence: 99%

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

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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.

“…27 Bromate (KBrO 3 ) and nitrite (KNO 2 ) can be used as food additives and preservatives, respectively, but excessive consumption will cause great harm to the human body. 28–30 Therefore, their control and detection are necessary. However, few examples of simultaneous electrochemical sensing of the above substances using POMOCs have been reported.…”

Section: Introductionmentioning

confidence: 99%

Four Anderson-type [TeMo₆O₂₄]⁶⁻-based metal–organic complexes with a new bis(pyrimidine)-bis(amide): multifunctional electrochemical and adsorption performances

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et al. 2022

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Four isostructural Anderson-type POM-based metal–organic complexes derived from a new bis(pyrimidine)-bis(amide) ligand were synthesized, showing multifunctional electrochemical sensing activities and good adsorption performances for organic dyes.

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