a sensitive and selective kinetic-spectrophotometric method was developed for the determination of trace amounts of uric acid. the method is based on the inhibitory effect of uric acid on the oxidation of janus green by bromate in the presence of sulfuric acid. the reaction was followed spectrophotometrically by measuring the absorbance at 518 nm using the fixed-time method. under optimum exper...

The role of additives in copper electroplating baths in the damascene process has been investigated. We proposed a bottom-up filling model and confirmed it by comparing the experimental and simulation results. Janus Green B and Basic Blue 3 which absorb on the copper surface and suppress copper deposition were examined for additive use to improve filling capability. Damascene copper grew unifor...

Effective staining of peripheral nerves in live insects is achieved with the vital stain Janus Green B. A working solution of 0.02% Janus Green B in saline is briefly applied to the exposed peripheral nervous system. The stain is then decanted and the dissection flooded with fresh saline, resulting in whole nerves being stained dark blue in contrast to surrounding tissues. This simple and relia...

The chemical binding point of Janus green B, a selective stain of mitochondria, has been studied on rat liver mitochondria. More than 90 percent of the dye was bound by a specific lipoprotein fraction, the so-called coenzyme Q-lipoprotein. The biologic effect of the incubation at 38~ of a mixture composed of Janus green B and ascitic fluid depends on the concentration of oxygen in the gaseous p...

A method for sensitive and selective determination of silver based on the catalytic effect of silver(I) ion on the oxidation of Janus Green by peroxodisulfate is described. o-Phenanthroline is used as an activator. The rate of the decrease in absorbance of Janus Green (at 615 nm) is proportional to the concentration of silver in the range of 0.3-4.0 ng mL(-1) and 4.0-500.0 ng mL(-1). The theore...

A sensitive and selective kinetic-spectrophotometric method was developed for the determination of trace amounts of uric acid. The method is based on the inhibitory effect of uric acid on the oxidation of Janus Green by bromate in the presence of sulfuric acid. The reaction was followed spectrophotometrically by measuring the absorbance at 518 nm using the fixed-time method. Under optimum exper...

OBJECTIVE To evaluate the value of microarthroscopy in the equine midcarpal joint using the vital stains methylene blue, trypan blue, neutral red, and Janus green B to observe components of the synovial lamina propria, vascular architecture, and synoviocytes. STUDY DESIGN Experimental. ANIMALS Ten horses. METHODS Microarthroscopy of left and right midcarpal joints was performed with and w...