Search results for "urea hydrolysis"

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NQS-Doped PDMS Solid Sensor: From Water Matrix to Urine Enzymatic Application

2021

The development of in situ analytical devices has gained outstanding scientific interest. A solid sensing membrane composed of 1,2-naphthoquinone-4-sulfonate (NQS) derivatizing reagent embedded into a polymeric polydimethylsiloxane (PDMS) composite was proposed for in situ ammonium (NH4+) and urea (NH2CONH2) analysis in water and urine samples, respectively. Satisfactory strategies were also applied for urease-catalyzed hydrolysis of urea, either in solution or glass-supported urease immobilization. Using diffuse reflectance measurements combined with digital image processing of color intensity (RGB coordinates), qualitative and quantitative analyte detection was assessed after the colorime…

In situAnalyteMaterials scienceUreasePolymersClinical BiochemistrywaterNQS02 engineering and technologyureaurea hydrolysis01 natural sciencesArticlechemistry.chemical_compoundDimethylpolysiloxanesoptical sensorureaseglass supportChromatographyPolydimethylsiloxanebiology010405 organic chemistryGeneral Medicine021001 nanoscience & nanotechnologyurine0104 chemical sciencesin-situ analysisammoniumMembranechemistryReagentUreabiology.proteinColorimetry0210 nano-technologyTP248.13-248.65NaphthoquinonesNQS-PDMS sensorBiotechnologyBiosensors

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