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AssigneeHoriba, Ltd.
InventorsMasahiko Ikeda, Hirosi Uchihara
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Microanalytical methods and associated apparatus for detecting and quantifying organic compounds with very high sensitivity utilize reflected or refracted infrared radiation. By depositing microliter sized quantities of the sample containing solution in a drop-by-drop manner on a water-repellent thin film and rapidly evaporating a solvent, a coherently condensed concentric sample is produced having enhanced sample thickness. This sample is irradiated with infrared radiation which is either reflected or transmitted by the material underlying the thin film. Measuring the spectrum of the infrared radiation passing through the sample detects the existence and concentration of the organic compound. The water-repellent thin film may be provided with multiple small scale depressions, pinholes or zones of reduced surface tension for condensing the sample.
A micro spectrometric analytical method comprising:
A micro spectrometic analytical method comprising:
A micro spectrometric analytical method comprising:
A micro spectrometric analytical method comprising:
A sampling plate comprising a water-repellent thin film applied to an infrared ray-reflecting material.
A sampling plate comprising a water-repellent thin film applied to an infrared ray-transmitting material.
A method of detecting organic compounds, in which a liquid eluted from a column of a liquid chromatograph is deposited drop by drop on a thin film of water-repellent fluoride resins applied to an infrared ray-reflecting material and a sample of organic compounds coherently concentrated on said think film is irradiated with infrared rays to detect reflected infrared rays and measure the absorbing degree of said reflected infrared rays, thereby detecting the existence and concentration of said organic compounds.
A method of detecting organic compounds, in which a liquid eluted from a column of a liquid chromatograph is deposited drop by drop on a thin film of water-repellent fluoride resins applied to an infrared ray-transmitting material and a sample of organic compounds coherently concentrated on said thin film is irradiated with infrared rays to detect transmitted infrared rays and measure the absorbing degree of said transmitted infrared rays, thereby detecting the existence and concentration of said organic compounds.
An apparatus of detecting organic compounds comprising a column of a liquid chromatograph, a device for dropping a liquid from said column, a sampling plate provided with a thin film of water-repellent fluoride resins formed on a surface thereof, a sampler for conveying said sampling plate at an appointed speed in an appointed direction, an infrared ray-irradiating device for irradiating a sample coherently concentrated on said thin film with infrared rays, and an infrared ray-detecting portion for detecting infrared rays reflected from said sampling plate when said sample is irradiated with said infrared rays.
An apparatus of detecting organic compounds comprising a column of a liquid chromatograph, a device for dropping a liquid from said column, a sampling plate provided with a thin film of water-repellent fluoride resins formed on a surface thereof, a sampler for conveying said sampling plate at an appointed speed in an appointed direction, an infrared ray-irradiating device for irradiating a sample coherently concentrated on said thin film with infrared rays, and an infrared ray-detecting portion for detecting infrared rays, which have transmitted through said sample and said sampling plate, when said sample is irradiated with said infrared rays.
Dependencies are inferred from the claim text.