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A wavelength modulation surface plasmon resonance (SPR) biosensor based on gold nanorods-Fe 3 O 4 (GNR-Fe 3 O 4 ) nanohybrids was developed for the determination of mouse IgG. The premade negatively charged Fe 3 O 4 nanoparticles were coated on the surface of positively charged GNRs through electrostatic interaction. The synthetic method was simple,...
A water-soluble, biocompatible, and fluorescent chemosensor (1) for label-free, simple, and fast detection of mercury ions (Hg 2+ ) in aqueous solutions and in HepG2 cells with high selectivity is reported herein. Chelation of 1 with Hg 2+ results in the disappearance of its fluorescence emission at 350nm and the appearance of a new emission at 405nm. Selectivity and interference studies...
In this study, gold nanorods (GNRs) and graphene oxide (GO) were used to enhance the sensitivity of wavelength modulation surface plasmon resonance (SPR) biosensor to detect bovine IgG. GNRs were prepared by a method of seed-mediated growth and immobilized on the Au film through 1,6-hexanedithiol by covalent attachment. GO was prepared by a modified Hummers and Offeman's method and can be assembled...
A new method (P-LE–FCA) for the determination of pyruvic acid was proposed based on liquid enzyme method (LE) and fluorescence capillary analysis (FCA). The optimum experimental conditions were as follows: the excitation and emission wavelengths were 350 and 460nm, respectively; the reaction time and temperature were 20min and 38°C, respectively; the pH of phosphate buffer solution was 7.5; the concentrations...
Tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy) 32+ )–Zirconia–Nafion composite modified glassy carbon disk electrode as a solid-state electrochemiluminescence (ECL) detector is successfully applied to an electrophoretic microchip system with a wall-jet configuration. Pharmaceuticals such as tramadol, lidocaine and ofloxacin were selected to characterize the performance of this microchip capillary...
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