Distance-Based Paper Device Combined with Headspace Extraction for Determination of Cyanide

Khatha, Papichaya; Phutthaphongloet, Thanyarat; Timpa, Phenphitcha; Ninwong, Benjawan; Income, Kamolwich; Ratnarathorn, Nalin; Dungchai, Wijitar

doi:10.3390/s19102340

Cited by 15 publications

(7 citation statements)

References 24 publications

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“…Some interferences were observed in case of Brpresence where the chloride peak height reached only 65±31% of the initial response without interfering ions. The largest interferences were observed with CNions, which agrees with the fact that CNalso forms complex with Ag [36,64]. On the other side, presumable AgCl oxidation peak is still observed, from which it can be concluded that the formation of AgCl occurs even in the presence of Brand CN -, but these ions compete for the Ag nanoparticle surface.…”

Section: Influence Of Ph and Other Halide Ionssupporting

confidence: 74%

Simplified synthesis of silver nanoparticles on graphene oxide and their applications in electrocatalysis

Filip

Wechsler²,

Šťastný³

et al. 2020

Nanotechnology

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In this work the possibility was investigated to synthesize in-situ silver nanoparticles (AgNP) on graphene oxide (GO) surface without commonly used additional reducing or alkalizing agents or increased temperature. Using diverse microscopic (AFM, TEM) and spectroscopic methods, it was proved that very small AgNPs were formed on GO by simple incubation for 2 hours a mixture of GO dispersion and AgNO3. The prepared nanomaterial (GO_Ag) was also assessed using electrochemical methods and it exhibited electrochemical behavior similar to GO_Ag nanomaterial prepared with a help of citric acid as a reducing agent. Furthermore, it was found that i) electrochemical reduction of the GO_Ag on electrode surface decreased the voltammetric response even though this step has increased the surface conductivity and ii) GO_Ag can be employed for sensing of chlorides with detection limit of 79 M and a linear range up to 10 mM. It could also provide electrochemical response toward chloroacetanilide herbicide metazachlor. Hence, the reducing capabilities of GO were proved to be applicable for insitu synthesis of metal nanoparticles with the highest possible simplification and the as-prepared nanomaterials could be employed for fabrication of different electrochemical sensors.

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Section: Influence Of Ph and Other Halide Ionssupporting

confidence: 74%

Simplified synthesis of silver nanoparticles on graphene oxide and their applications in electrocatalysis

Filip

Wechsler²,

Šťastný³

et al. 2020

Nanotechnology

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“…This 1,2,3-tricarbonyl molecule is highly electrophilic and the polyhydroxyl structure is produced by irreversible hydrolysis of the ester bond [ 87 ]. The high reactivity of these silver-DHA nanoparticles has allowed the development of simple cyanide detection systems [ 88 ].…”

Section: Resultsmentioning

confidence: 99%

Role of Synthetic Plant Extracts on the Production of Silver-Derived Nanoparticles

Al-Zahrani

Astudillo-Calderón

Pintos

et al. 2021

Plants

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The main antioxidants present in plant extracts—quercetin, β-carotene, gallic acid, ascorbic acid, hydroxybenzoic acid, caffeic acid, catechin and scopoletin—are able to synthesize silver nanoparticles when reacting with a Ag NO3 solution. The UV-visible absorption spectrum recorded with most of the antioxidants shows the characteristic surface plasmon resonance band of silver nanoparticles. Nanoparticles synthesised with ascorbic, hydroxybenzoic, caffeic, and gallic acids and scopoletin are spherical. Nanoparticles synthesised with quercetin are grouped together to form micellar structures. Nanoparticles synthesised by β-carotene, were triangular and polyhedral forms with truncated corners. Pentagonal nanoparticles were synthesized with catechin. We used Fourier-transform infrared spectroscopy to check that the biomolecules coat the synthesised silver nanoparticles. X-ray powder diffractograms showed the presence of silver, AgO, Ag2O, Ag3O4 and Ag2O3. Rod-like structures were obtained with quercetin and gallic acid and cookie-like structures in the nanoparticles obtained with scopoletin, as a consequence of their reactivity with cyanide. This analysis explained the role played by the various agents responsible for the bio-reduction triggered by nanoparticle synthesis in their shape, size and activity. This will facilitate targeted synthesis and the application of biotechnological techniques to optimise the green synthesis of nanoparticles.

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“…Cyanide was determined in several types of waters (drinking water, seawater, tap water, and wastewater) by means of distance-based PAD using Au/Ag NPs as probes [ 94 ] ( Figure 5 D). The yellow band length caused by the probe decreased with increasing cyanide concentration.…”

Section: Strategies For Enhancing Sensitivity Of Paper-based Analymentioning

confidence: 99%

“… Representative examples of the combination of PADs and thin-film microextraction for the detection of different metal species and anions. ( A ) PAD with AuNCs as fluorescent probes and integrated with thin-film microextraction for sensing Se(IV) following hydride generation [ 79 ]; ( B ) PAD with CdTd QDs as nanoreceptors for the determination of Se(IV) following hydride generation [ 72 ]; ( C ) PAD integrated with thin-film microextraction for the determination of total As and speciation of As(III) and As(V) [ 93 ]; ( D ) distance-based microPAD for the determination of cyanide using Au/Ag NPs as probes; a prior preconcentration in a drop was carried out to improve sensitivity [ 94 ]. ( D ).…”

Section: Figurementioning

confidence: 99%

Nanomaterial-Integrated Cellulose Platforms for Optical Sensing of Trace Metals and Anionic Species in the Environment

Bendicho

Lavilla

Pena‐Pereira

et al. 2021

Sensors

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The development of disposable sensors that can be easily adapted to every analytical problem is currently a hot topic that is revolutionizing many areas of science and technology. The need for decentralized analytical measurements at real time is increasing for solving problems in areas such as environment pollution, medical diagnostic, food quality assurance, etc., requiring fast action. Despite some current limitations of these devices, such as insufficient detection capability at (ultra)trace level and risk of interferent effects due to matrix, they allow low-cost analysis, portability, low sample consumption, and fast response. In the last years, development of paper-based analytical devices has undergone a dramatic increase for on-site detection of toxic metal ions and other pollutants. Along with the great availability of cellulose substrates, the immobilization of receptors providing enhanced recognition ability, such as a variety of nanomaterials, has driven the design of novel sensing approaches. This review is aimed at describing and discussing the different possibilities arisen with the use of different nanoreceptors (e.g., plasmonic nanoparticles, quantum dots, carbon-based fluorescent nanoparticles, etc.) immobilized onto cellulose-based substrates for trace element detection, their advantages and shortcomings.

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Distance-Based Paper Device Combined with Headspace Extraction for Determination of Cyanide

Cited by 15 publications

References 24 publications

Simplified synthesis of silver nanoparticles on graphene oxide and their applications in electrocatalysis

Simplified synthesis of silver nanoparticles on graphene oxide and their applications in electrocatalysis

Role of Synthetic Plant Extracts on the Production of Silver-Derived Nanoparticles

Nanomaterial-Integrated Cellulose Platforms for Optical Sensing of Trace Metals and Anionic Species in the Environment

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