Search results for "Analyte"

showing 3 items of 303 documents

Localized surface plasmon resonance sensor based on Ag-PVA nanocomposite thin films

2009

In this work we demonstrate the use of nanocomposite thin films of poly(vinyl alcohol) with embedded silver NPs for chemosensing purposes. Silver NPs are in situ synthesized inside polyvinyl alcohol during the bake step of the formation of a nanocomposite thin film. The polymer in the nanocomposite provides an appropriate chemical and electromagnetic environment for metal NPs in order to interact with and hence detect the chemical species. A limit of detection below 20 nM is found when detecting 2-mercaptoethanol as the analyte, when measuring spectral changes (peak wavelength, linewidth and intensity) in the Localized Surface Plasmon Resonance. Potential qualitative and semi-quantitative s…

chemistry.chemical_classificationVinyl alcoholAnalyteNanocompositeMaterials scienceAnalytical chemistryNanotechnologyGeneral ChemistryPolymerPolyvinyl alcoholchemistry.chemical_compoundChemical speciesLaser linewidthchemistryMaterials ChemistrySurface plasmon resonanceJournal of Materials Chemistry
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Potent affinity material for tracing acetone and related analytes based on molecular recognition by halogen bonds.

2014

Affinity materials based on halogen bonds turned out to be a powerful tool for the molecular recognition of acetone or related carbonyl compounds in the presence of ubiquitous protic molecules. The superior selectivity and sensitivity were found by the gravimetric detection of volatile organic compounds by quartz crystal microbalances.

inorganic chemicalsAnalyteMetals and AlloysGeneral ChemistryCatalysisSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCrystalchemistry.chemical_compoundMolecular recognitionchemistryHalogenMaterials ChemistryCeramics and CompositesAcetoneMoleculeOrganic chemistryGravimetric analysisSelectivityChemical communications (Cambridge, England)
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Development of an immunochromatographic assay based on carbon nanoparticles for the determination of the phytoregulator forchlorfenuron

2013

Rapid analytical methods enabling the determination of diverse targets are essential in a number of research areas, from clinical diagnostics to feed and food quality and safety. Herein, the development of a quantitative immunochromatographic assay for the detection of the synthetic phytoregulator forchlorfenuron (CPPU) is described. The competitive lateral flow immunoassay (LFIA) was based on the immobilization onto a nitrocellulose membrane of an ovalbumin-CPPU conjugate (test line) and on the use of an immunodetection ligand consisting of carbon nanoparticles labeled with an anti-CPPU monoclonal antibody through interaction with a secondary antibody. The presence of CPPU in horticultural…

water samplesCarbon nanoparticlesAnalyteImmunoreactive stripsPyridinesCarbon NanoparticlesBiomedical EngineeringBiophysicsEnzyme-Linked Immunosorbent AssayCPPUBiosensing Techniquesantibody-based immunoassayForchlorfenuronbiosensorHigh-performance liquid chromatographychemistry.chemical_compoundElectrochemistryImmunoassayDetection limitvalidationChromatographyChemistrystrip testPhenylurea Compoundslateral flow immunoassayAntibodies Monoclonalcomputer image-analysisGeneral MedicineCarbonHaptendipstick assayBBP Bioconversionrapid detectionImmunosensingNanoparticlessensitive detectionBiosensorNitrocelluloseBiotechnologyConjugate
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