A5049296145- Microfluidic and Capillary Electrophoresis Applications
- Analytical Chemistry and Chromatography
- Innovative Microfluidic and Catalytic Techniques Innovation
- Microfluidic and Bio-sensing Technologies
- Nanopore and Nanochannel Transport Studies
- Analytical chemistry methods development
- Advanced biosensing and bioanalysis techniques
- Mass Spectrometry Techniques and Applications
- Biosensors and Analytical Detection
- Advanced Nanomaterials in Catalysis
- Gold and Silver Nanoparticles Synthesis and Applications
- Nanocluster Synthesis and Applications
- Analytical Chemistry and Sensors
- Electrochemical sensors and biosensors
- Electrowetting and Microfluidic Technologies
- Advanced Chemical Sensor Technologies
- Amino Acid Enzymes and Metabolism
- Nanomaterials for catalytic reactions
- Phenothiazines and Benzothiazines Synthesis and Activities
- Pesticide Residue Analysis and Safety
- Carbon and Quantum Dots Applications
- Advanced Proteomics Techniques and Applications
- Electrochemical Analysis and Applications
- Multicomponent Synthesis of Heterocycles
- Chalcogenide Semiconductor Thin Films
National Kaohsiung Normal University
2014-2024
Fooyin University
2004-2010
National Taiwan University
1998-2006
Med Center
1990
This paper describes the synthesis of core-shell CdSe/CdS quantum dots (QDs) in aqueous solution by a simple photoassisted method. CdSe was prepared from cadmium nitrate and 1,1-dimethylselenourea precursors under illumination for up to 3 h using pulsed Nd:YAG laser at 532 nm. The effects that temperature irradiation process have on were monitored series experiments Cd:Se concentration ratio 4. Upon increasing (80-140 degrees C), size QDs increases time required reaching maximum...
On-line concentration and separation of biologically active amines acids by capillary electrophoresis (CE) in conjunction with laser-induced fluorescence using an Nd:YAG laser at 266 nm under discontinuous conditions is presented. The suitable for simultaneous analysis were: samples were prepared a solution (pH* 3.1) consisting 10 mM citric acid, 89% acetonitrile (ACN), water; was filled 1.5 M Tris-borate (TB) buffer (pH 10.0); the anodic vial contained PTG10 9.0) that consists 50 propanoic...
A rapid, simple and sensitive method for the detection of piperazinyl phenothiazine drugs using dispersive liquid-liquid microextraction (DLLME) combined with field-amplified sample stacking (FASS) in CE was developed. Sensitivity parameters that affect extraction FASS efficiency, such as type volume disperser solvent, time, addition salt, efficiency FASS, were investigated optimized. Note conductivity ratio between BGE zone measured to be 2300. Under optimal conditions, calibration curve,...
We demonstrated DNA preconcentration and separation in the presence of electroosmotic flow (EOF) using poly(ethylene oxide) (PEO) solutions. After injecting large volumes samples into a capillary filled with free tris(hydroxymethyl)aminomethane (Tris)-borate (TB) buffers, PEO solutions entered by EOF acted as sieving matrices. In contrast to conventional methods (in absence EOF), controlling was also useful for resolution optimization. have found that adsorption on wall more pronounced when...
In this paper, we describe a method for analyzing large-volume protein samples using capillary electrophoresis in conjunction with laser-induced fluorescence detection (CE-LIF). To improve the stacking and separation efficiencies of proteins, added either 0.01% sodium dodecyl sulfate (SDS) or poly(ethylene oxide) (PEO) to Tris-borate solutions (pH 10.0) used prepare samples. After injection (ca. 1.0 μL, 0.1 μM), proteins migrate against electroosmotic flow (EOF) enter PEO zone; process...
Abstract We report a novel means for chiral separation and stacking of amino acids by MEKC with LED‐induced fluorescence detection. Naphthalene‐2,3‐dicarboxaldehyde, hydroxypropyl‐β‐cyclodextrin (Hp‐β‐CD), SDS, poly(ethylene oxide) (PEO) serve as derivatized agent, selector, pseudostationary phase, concentrated medium, in sequence. To improve speed, resolution, efficiency, the analysis was performed under discontinuous conditions – capillary filled solution 100 mM Tris‐borate, 150 50...
Dispersive liquid-liquid microextraction was combined with acetonitrile stacking in capillary electrophoresis for the identification of three selective serotonin reuptake inhibitors (citalopram, fluoxetine, and fluvoxamine) human fluids such as urine plasma. Parameters that affect extraction efficiency, type volume disperser solvent, time, salt addition dispersive microextraction, sample matrices, pH, concentration separation buffer stacking, were investigated optimized. Under optimum...
We report concentration methods for the analysis of small solutes by capillary electrophoresis in conjunction with laser-induced native fluorescence using a Nd:YAG laser. After injecting samples, poly(ethylene oxide) (PEO) anode reservoir entered filled Tris-borate buffer. When migrating PEO solution, analytes slowed down and stacked at interface between sample zone solution. As result, limits detection (LODs) to 8 p M 2-naphthalenesulfonic acid 70 L-tryptophan have been achieved when 30 cm...
This study developed a sensitive method involving capillary electrophoresis (CE) coupled with ultraviolet absorption for the simultaneous separation of chiral phenothiazine drugs at nanomolar concentration levels. The consists hydroxypropyl-γ-cyclodextrin (Hp-γ-CD) as selector and poly (diallyldimethylammonium chloride) (PDDAC)-based CE. Five pairs d,l-phenothiazines were baseline separated using background electrolyte containing 0.9% PDDAC, 5 mM Hp-γ-CD, 100 tris(hydroxymethyl)aminomethane...