Field Analytical Chemistry

Migration analysis of micro-particles in liquids using microscopically designed external fields.

The recent development of new migration methods of micro-particles in liquids using various external fields is reviewed. The combination of a laser scattering force and a photothermal effect produced photothermal-conversion laser-photophoresis. A dielectric field generated in a planer or a capillary quadrupole electrode realized dielectrophoresis. Using a micrometer-scaled magnetic field gradie...

NMR Chromatography: Molecular Diffusion in the Presence of Pulsed Field Gradients in Analytical Chemistry Applications

Nuclear magnetic resonance (NMR) spectroscopy is an excellent analytical tool for precise structural characterization of organic and bio-molecules. Though NMR is often used to characterize a single compound in solution, emerging experimental methods using pulsed-field-gradients (PFGs) allow structural dynamic characterization of several compounds, simultaneously in the same solution. NMR as a c...

Fabrication, optimization, and use of graphene field effect sensors.

Elution control of microparticles with a coupled acoustic-gravity field and orthogonal laminar flow.

Particles accumulated in a coupled acoustic-gravity field, in which the base-material of a particle determines the equilibrium aggregation positions, are eluted from a separation channel by an orthogonal laminar flow. Elution times are controllable by changing the intensity and frequency of the ultrasonic waves.

Simultaneous Determination Of Ezetimibe And Atorvastatin Calcium In Binary Mixture By Second Derivative (D) Spectrofluorimetric Method

Analytical Chemistry Department, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt Biotechnology Centre, Faculty of Pharmacy, Cairo University, Cairo, Egypt Pharmaceutical Chemistry Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University,...

New trends in near-infrared fluorophores for bioimaging.

This review summarizes progress in the field of near-infrared (NIR) fluorophores achieved during the last decade from the viewpoint of chemistry. Those compounds are of wide interest in bioanalysis and bioimaging, such as in vivo fluorescence imaging. Particular focus is placed on the recent developments of BODIPY and rhodamine derivatives, which belong to the most evolved NIR fluorophores. The...