Single-dip colorimetric detection of cyanide using paper-based analytic device based on immobilized silver nanoparticles

Budlayan, Marco Laurence M.; Lagare-Oracion, Jeanne Phyre; Rosa, Lyka De La; Arco, Susan D.; Alguno, Arnold C.; Manigo, Jonathan P.; Capangpangan, Rey Y.

doi:10.1007/s40089-022-00373-1

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…The fiber optical sensors with Au@Ag exhibited a great advantage of ultrahigh sensitivity over conventional methodologies, such as using fluorometry and colorimetry − while ensuring sufficient operation range of CN – concentration for CN – quantitative sensors. Table summarizes the recently reported cyanide detection compared with the results presented in this work.…”

Section: Resultsmentioning

confidence: 99%

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor

Phuong,

Phung,

et al. 2023

Langmuir

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Cyanides, which are extremely toxic chemicals that are rapidly absorbed into the human body and interact with cytochrome oxidase, strongly inhibit cellular respiration to body death with convulsions. Cyanide ions that exist in many forms in nature such as those found in apricot kernels, cassava roots, and bamboo shoots as cyanogenic glycosides are inevitably used in various industries, including gold and silver mining as well as in dyes and plastic industries. In this study, for the sake of developing ultrahigh-sensitive sensors for cyanide monitoring in a simple manner, we chemically synthesize Au core −Ag shell hybrid nanomaterials of different core/shell thicknesses for colorimetric sensors and fiber optical sensors. Their sensing principle relies on the formation of the Ag/Au cyanocomplex upon cyanide injection. The generated metal cyanocomplex induced changes in refractive indices, causing changes in properties of localized surface plasmon resonance (LSPR), i.e., optical absorbance change for the colorimetric sensors. For fiber optical sensors, the hybrid metal nanoparticles were immobilized on the fiber core surface and the metal cyanocomplex formation induced changes in the fiber cladding refractive index, enabling quantitative cyanide detection with ultrahigh sensitivity. The LSPR-based colorimetric sensor provided the lowest detectable cyanide concentration of 5 × 10 −6 M, whereas the value for the fiber-based sensor was 8 × 10 −11 M.

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Section: Resultsmentioning

confidence: 99%

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor

Phuong,

Phung,

et al. 2023

Langmuir

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Detecting mercury ions in water using a low-cost colorimetric sensor derived from immobilized silver nanoparticles on a paper substrate

Budlayan

Dalagan

Lagare

et al. 2022

Environmental Nanotechnology, Monitoring & Management

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A Dye-Assisted Paper-Based Assay to Rapidly Differentiate the Stress of Chlorophenols and Heavy Metals on Enterococcus faecalis and Escherichia coli

Dai,

Inumbra,

Wong

et al. 2023

Biosensors

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Biological toxicity testing plays an essential role in identifying the possible negative effects induced by substances such as organic pollutants or heavy metals. As an alternative to conventional methods of toxicity detection, paper-based analytical device (PAD) offers advantages in terms of convenience, quick results, environmental friendliness, and cost-effectiveness. However, detecting the toxicity of both organic pollutants and heavy metals is challenging for a PAD. Here, we show the evaluation of biotoxicity testing for chlorophenols (pentachlorophenol, 2,4-dichlorophenol, and 4-chlorophenol) and heavy metals (Cu2+, Zn2+, and Pb2+) by a resazurin-integrated PAD. The results were achieved by observing the colourimetric response of bacteria (Enterococcus faecalis and Escherichia coli) to resazurin reduction on the PAD. The toxicity responses of E. faecalis-PAD and E. coli-PAD to chlorophenols and heavy metals can be read within 10 min and 40 min, respectively. Compared to the traditional growth inhibition experiments for toxicity measuring which takes at least 3 h, the resazurin-integrated PAD can recognize toxicity differences between studied chlorophenols and between studied heavy metals within 40 min.

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Single-dip colorimetric detection of cyanide using paper-based analytic device based on immobilized silver nanoparticles

Cited by 3 publications

References 23 publications

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor

Detecting mercury ions in water using a low-cost colorimetric sensor derived from immobilized silver nanoparticles on a paper substrate

A Dye-Assisted Paper-Based Assay to Rapidly Differentiate the Stress of Chlorophenols and Heavy Metals on Enterococcus faecalis and Escherichia coli

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Single-dip colorimetric detection of cyanide using paper-based analytic device based on immobilized silver nanoparticles

Cited by 3 publications

References 23 publications

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Aucore–Agshell Hybrid-Coating-Based Fiber Optical Sensor

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Aucore–Agshell Hybrid-Coating-Based Fiber Optical Sensor

Detecting mercury ions in water using a low-cost colorimetric sensor derived from immobilized silver nanoparticles on a paper substrate

A Dye-Assisted Paper-Based Assay to Rapidly Differentiate the Stress of Chlorophenols and Heavy Metals on Enterococcus faecalis and Escherichia coli

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Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor