Articles with "colorimetric sensor" as a keyword



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Tuneable design of a pulp fibre-based colorimetric sensor and its visual recognition mechanism for ppb levels of Ag+

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Published in 2019 at "Cellulose"

DOI: 10.1007/s10570-019-02713-5

Abstract: A novel biomass pulp fibre (PF)-based colorimetric sensor was prepared by grafting l-lysine (l-lys) onto the surface of PFs via a Schiff base reaction. The grafted l-lys contained two specific synergistic recognition groups (–COOH and… read more here.

Keywords: based colorimetric; recognition; dapf lys; colorimetric sensor ... See more keywords
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Improving the detection limit of Salmonella colorimetry using long ssDNA of asymmetric-PCR and non-functionalized AuNPs.

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Published in 2021 at "Analytical biochemistry"

DOI: 10.1016/j.ab.2021.114229

Abstract: A colorimetric sensor based on gold nanoparticles (AuNPs) and single-stranded DNA (ssDNA) is a simple and rapid method for detecting foodborne pathogens. However, the colorimetric method employed in previous studies involved short ssDNA ( read more here.

Keywords: colorimetry; detection; pcr; long ssdna ... See more keywords
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A new colorimetric sensor for visible detection of Cu(II) based on photoreductive ability of quantum dots.

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Published in 2018 at "Analytica chimica acta"

DOI: 10.1016/j.aca.2018.03.011

Abstract: Quantum dots (QDs) have been widely used to develop analytical methods due to their unique fluorescent and photoelectrochemical characteristics. However, analytical strategies based on their catalytic property are rarely reported. Here, we demonstrate that the… read more here.

Keywords: new colorimetric; photoreductive ability; colorimetric sensor; sensor ... See more keywords
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Colorimetric sensor for the detection of H2S and its application in molecular half-subtractor.

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Published in 2018 at "Analytica chimica acta"

DOI: 10.1016/j.aca.2018.08.028

Abstract: Azine based new colorimetric sensor 1 for the detection of gasotransmitter H2S has been reported. Sensor 1 used to detect the H2S with a remarkable red shift of 105 nm in the absorption spectra with a… read more here.

Keywords: detection; sensor detection; colorimetric sensor; detection h2s ... See more keywords
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A facile colorimetric sensor for ultrasensitive and selective detection of Lead(II) in environmental and biological samples based on intrinsic peroxidase-mimic activity of WS2 nanosheets.

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Published in 2020 at "Analytica chimica acta"

DOI: 10.1016/j.aca.2020.01.043

Abstract: Two-dimentional layered WS2 nanosheets with rich active edge exhibit intrinsic peroxidase-mimic activity, which make them an ideal material for sensor design. However, there is still lack of research on the catalysis and regulation mechanisms of… read more here.

Keywords: ws2 nanosheets; detection; peroxidase mimic; colorimetric sensor ... See more keywords
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Construction of a recyclable oxidase-mimicking Fe3O4@MnOx-based colorimetric sensor array for quantifying and identifying chlorophenols.

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Published in 2020 at "Analytica chimica acta"

DOI: 10.1016/j.aca.2020.02.024

Abstract: Chlorophenols (CPs) are known as a class of pollutants posing a great threat to the environment and human health because of their carcinogenesis and teratogenesis, and thus exploring convenient and efficient methods for their detection… read more here.

Keywords: colorimetric sensor; oxidase; fe3o4 mnox; sensor array ... See more keywords
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Prediction of key aroma development in coffees roasted to different degrees by colorimetric sensor array.

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Published in 2018 at "Food chemistry"

DOI: 10.1016/j.foodchem.2017.07.139

Abstract: We developed a colorimetric sensor array (CSA) that is sensitive to highly contributory volatile compounds of coffee aroma for discrimination of coffee samples roasted to different roast degrees. Strecker aldehydes and α-diketones were significantly higher… read more here.

Keywords: roast; aroma; sensor array; colorimetric sensor ... See more keywords
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A naphthalenediimide-based Co-MOF as naked-eye colorimetric sensor to humidity

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Published in 2019 at "Journal of Solid State Chemistry"

DOI: 10.1016/j.jssc.2019.07.030

Abstract: Abstract A novel cobalt-based metal-organic framework, {[Co2(DPNDI)(2,6-NDC)2]·7(DMF)}n (1), has been solvothermally synthesized from mixed ligands, N,N′-Di(4-pyridyl)-1,4,5,8-naphthalenetetracarboxydiimide (DPNDI) and naphthalene-2,6-dicarboxylic acid (2,6-NDC). In the crystal structure of 1, the paddle-wheel {Co2} clusters were linked by two… read more here.

Keywords: naked eye; sensor humidity; eye colorimetric; colorimetric sensor ... See more keywords
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Enhancement of the pH measurement of a PVDF-supported colorimetric sensor by tailoring hue changes with the addition of a second dye

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Published in 2020 at "Microchemical Journal"

DOI: 10.1016/j.microc.2019.104552

Abstract: Abstract A pH colorimetric sensor was prepared and characterized by combining two acid-base indicators, Tetrabromophenol blue (TBB) and Phenol Red (PR) with molar ratios ranging from 0 to 0.47. Indicators were embedded in Organically Modified… read more here.

Keywords: enhancement measurement; hue; measurement pvdf; colorimetric sensor ... See more keywords
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A simple and sensitive colorimetric sensor for determination of gentamicin in milk based on lysine functionalized gold nanoparticles

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Published in 2020 at "Microchemical Journal"

DOI: 10.1016/j.microc.2020.105190

Abstract: Abstract The residue of gentamicin (GEN) in food is a serious threat to human health. Therefore, it is urgent to develop a simple and highly sensitive method for effectively detecting GEN in food. In this… read more here.

Keywords: functionalized gold; lysine functionalized; gold nanoparticles; gen ... See more keywords
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BIOCONJUGATED GOLD NANOPARTICLES AS AN EFFICIENT COLORIMETRIC SENSOR FOR CANCER DIAGNOSTICS.

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Published in 2020 at "Photodiagnosis and photodynamic therapy"

DOI: 10.1016/j.pdpdt.2020.101699

Abstract: The chances of curing and reducing the adverse effect of cancer lies in its early stage detection. In most of the cancer related issues, they are identified at their later stages like stage III or… read more here.

Keywords: detection; gold nanoparticles; cancer; colorimetric sensor ... See more keywords