Effect of Y doping on oxygen vacancies of TiO2 supported MnOX for selective catalytic reduction of NO with NH3 at low temperature

Application of Oscillating Chemical Reaction to Analytical Chemistry: Recent Developments

A simple and highly sensitive spectrophotometric method for the determination of uric acid (UA) was established based on fading of the o-hydroxyhydroquinonephthalein-palladium(II)-hexadecyltrimethylammonium complex. In the determination of UA, Beer's law is obeyed in the range of 0.01 - 0.20 µg ml-1, with an effective molar absorptivity at 635 nm, the relative standard deviation being 6.5 × 105 dm3 mol-1 cm-1 and 1.5% (n = 5). This method is about 20-times more sensitive than the conventional methods. The method was successfully applied to the assay of UA in human urine.

https://www.jstage.jst.go.jp/article/analsci/23/2/23_2_223/_pdf

Spectrophotometric determination of uric acid based on fading of o-hydroxyhydroquinonephthalein-palladium(II)-hexadecyltrimethyl-ammonium complex.

Phototreatment is at the leading edge of a research hot topic as a driving force for structural transformation, spectral and electromagnetism improvements, and the functional performance of nanomaterials. Light irradiation can excite surface plasmons in noble metal nanoparticles, create electron-hole pairs, and produce charge transfer in semiconductor substrates, which have led to it being widely used in surface-enhanced Raman spectroscopy (SERS) for life sciences, environmental protection, and biological analysis. Photo-induced enhanced Raman spectroscopy (PIERS) is a new technology developed on the basis of traditional SERS and has proven to be an efficient way to resolve several critical challenges thanks to its incomparable superiority for incontiguous operation, efficient charge separation and enrichment, and a large signal enhancement for a wide range of biomolecules at the trace level. This makes PIERS a powerful technique with very appealing and promising applications in various branches of analytical science. In this review, the enhancement mechanisms of PIERS are analyzed in comparison with SERS. Afterward, the parameters influencing the enhancement of PIERS, including the substrate, light irradiation, and relaxation are discussed in detail. Finally, some perspectives on further developments of PIERS are exemplified. The PIERS technique will continue to evolve and grow with new developments and its successful application in bioanalysis and life sciences.

Recent advances and perspectives in photo-induced enhanced Raman spectroscopy.

https://iopscience.iop.org/article/10.1149/2.0991811jes/pdf

Electrochemical Sensor Based on Single-Walled Carbon Nanotubes-Modified Gold Electrode for Uric Acid Detection

A new method for determination of uric acid by the lactic acid–acetone-BrO3−–Mn2+–H2SO4 oscillating reaction using the analyte pulse perturbation technique

Analyte pulse perturbation (APP) technique was applied to the study of the perturbation of ascorbic add (AA) on the lactic add-acetone-BrO3−-Mn2+-H2SO4 oscillating reaction, and AA was determined using this new oscillating chemical system. Influence of experimental variables was investigated. The linear range lies between 5.0 × 10−7-5.5 × 10−s mol/L, and the precision and throughput were quite good (2.43% as RSD, and 8–10 samples/h, respectively). This method was applied to the determination of real samples and the results were satisfactory. Some aspects of the potential mechanism of action of AA on the oscillating systems are discussed.

Shu‐Tao Yang

Papers

A new method for determination of uric acid by the lactic acid–acetone-BrO3−–Mn2+–H2SO4 oscillating reaction using the analyte pulse perturbation technique

Determination of Ascorbic Acid Using a New Oscillating Chemical System of Lactic Acid-Acetone-BrO3−-Mn2+-H2SO4