摘要:
An object of this invention is to provide an inexpensive and highly durable electrode which is capable of causing hydrogen peroxide to generate a current output in the same manner as those of platinum or iridium. A working electrode (9) (electrode for electrochemical measurement apparatus (1)) for use in an electrochemical measurement apparatus 3 according to the invention is made of an alloy containing iridium and niobium, and the alloy has such a composition as to enable measurement of the concentration of hydrogen peroxide.
摘要:
An object of the present invention is to provide an electrode for an electrochemical measurement apparatus that is less susceptible to influence from interference substances as compared to conventional technology and an electrochemical measurement apparatus using such an electrode. A working electrode 9 (an electrode 1 for an electrochemical measurement apparatus) used in an electrochemical measurement apparatus 3 of the present invention uses an alloy containing iridium and rhenium with such a composition that selectivity for hydrogen peroxide can be obtained.
摘要:
An electrochemical sensor based on a three-electrode method containing a reference electrode, comprising: A working electrode 2, a counter electrode 3 and a reference electrode 4 formed on an insulating substrate 1; an examining electrode 8 provided to examine an electric potential of the reference electrode 4; a combining layer 20, an immobilized enzyme layer 21 and a diffusion-limiting layer 22 made of a fluororesin provided on voltmeter is provided on these electrodes, between the examining electrode 8 and the reference electrode 4 so that the electric potential of the reference electrode can be examined; to detect an abnormality in the reference electrode immediately after its occurrence, recover a high reliability of measured value by removing the abnormality quickly, make it possible to conduct a continuous measurement for a long time and furthermore try to reduce a running cost.
摘要:
On an insulating substrate 1 is formed an electrode 2, on which is then formed a protection layer 3 consisting of a methacrylate-resin polyfluoroalcohol ester layer.
摘要:
On an insulating substrate 1 is formed an electrode 2 as a working electrode, on which is formed a binding layer 3 mainly consisting of &ggr;-aminopropyltriethoxysilane. On the binding layer are sequentially formed an immobilized enzyme layer 4 in which a catalytic enzyme is immobilized in an organic polymer and a permeation restricting layer 5.
摘要:
A drop in measurement accuracy of biosensors, due to interferents in a measurement sample is avoided by an arrangement wherein: a hydrogen peroxide electrode 2 is formed on an insulated base 1, and then a .gamma.-aminopropyltriethoxysilane film 3, an acetylcellulose film 4, a perfluorocarbonsulfonic acid resin film 5, an organic macromolecular film 6 incorporating an immobilized enzyme with catalytic properties, and a polyalkylsiloxane film 7, are sequentially formed on the electrode 2.
摘要:
A sampling device of the suction effusion fluid that is good in sampling operation efficiency. This device includes a cell with a vacuum suction port and a skin suction port, a slide valve formed in the cell, and fluid reservoirs formed in the valve. The slide valve is movable in a plane approximately parallel to the skin surface. The slide valve opens or closes a communication path communicating the skin suction port with the vacuum suction port. Each of the fluid reservoirs is alternately communicated with the skin suction port and the vacuum suction port through the communication path by sliding movement of the slide valve. Each of the fluid reservoirs stores an effusion fluid acquired from the skin surface by vacuum suction through the skin suction port. When the slide valve is located at a position where one of the fluid reservoirs is communicated with the skin suction port and the vacuum suction port, at least one of the remaining fluid reservoirs is exposed to the outside of the cell. The slide valve preferably has a rod or disk shape.
摘要:
An encapsulated toner for development of electrical latent images comprises a core particle containing a colorant and a soft solid material, inorganic fine particles attached to the vicinity of the surface of the core particle, and a shell coating the core particle and the inorganic fine particles. The inorganic fine particles function to, e.g., reinforce the encapsulated toner with a thin shell and may be attached to the core particles through dry-mixing. The core particles with the attached inorganic particles may be coated with a shell resin through phase separation.
摘要:
A developing method, which comprises arranging a latent image-bearing member which bears a latent image on the surface and a toner-carrying member which carries an insulating non-magnetic toner at the developing section with a certain gap provided therebetween, coating the toner-carrying member with the insulating non-magnetic toner, conveying the resultant coated layer to the developing section while regulating the thickness thinner than said gap and developing the latent image on the latent image-bearing member under the application of an alternate electric field on the toner. Since the toner has a form of a microcapsule comprising a soft core material and a hard shell material and also contains a colorant in addition to the core material, adequate discharging can be effected during triboelectric charging to give an image with a constant density through stably charged state.
摘要:
An elastic roller for use in an image forming apparatus comprises a rigid shaft member, an internal layer provided around said shaft member with a determined thickness and consisting of a porous elastic member containing therein pores for holding liquid, and an external layer covering said internal layer and consisting of a flexible liquid-permeating member provided with a number of through holes, said roller being provided with a means for applying a tension to said external layer in the axial direction of said roller.