[특허]Method and system for sampling and determining the presence of compounds

[미국특허] Method and system for sampling and determining the presence of compounds 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-021/76
출원번호	US-0416574 (1995-04-04)
발명자 / 주소	Rounbehler David P. (Bedford MA) Fine David H. (Sudbury MA) Achter Eugene K. (Lexington MA) MacDonald Stephen J. (Salem NH) Dennison Daniel B. (Kennesaw GA)
출원인 / 주소	The Coca-Cola Company (Atlanta GA 02)
인용정보	피인용 횟수 : 8 인용 특허 : 18

초록 ▼

A system and method are provided for minimizing the effects of background signals in masking signals indicating the presence of substances to be detected such as contaminants in materials moving rapidly along a conveyor. The contaminants detected may include nitrogen containing compounds and hydrocarbons. The system and method of the present invention minimizes the number of falsely positive indications of the presence of such substances due to background signals and changes in background signals. The substances detected are divided into first and second sample portions and the respective portions are heated. The first heated portion is reacted with ozone to generate radiation by chemiluminescence having characteristic wavelengths related to substances in the first portion. The second portion heated is also reacted with ozone to generate radiation by chemiluminescence having characteristic wavelengths related to substances in the second portion. The radiation of the respective first and second portions is selectively detected. The heating and detecting steps are performed in a manner so as to yield a higher level of detected radiation from one of the portions of the sample then the other for at least some of the selected compounds being detected. Electrical signals from the respective first and second portions are generated and compared in order to determine the presence or absence of selected compounds in the sample. Appropriate reject signals for a bottle sorting system are generated accordingly.

대표청구항 ▼

A method of detecting selected compounds in a sample by chemiluminescent gas phase reaction with a reactant comprising the steps of: collecting the sample; dividing the sample into first and second portions; heating the first portion of the sample to a first predetermined temperature in a first pyrolyzer having first conversion properties with respect to the selected compounds; heating the second portion of the sample to a second predetermined temperature in a second pyrolyzer having second conversion properties with respect to the selected compounds which are different from the first conversion properties of the first pyrolyzer; mixing the heated first portion of the sample with the reactant to cause a chemical reaction therewith in order to generate radiation by chemiluminescence having characteristic wavelengths related to substances in said first portion; mixing the heated second portion of the sample with the reactant to cause a chemical reaction therewith in order to generate radiation by chemiluminescence having characteristic wavelengths related to substances in said second portion; selectively detecting radiation emitted by chemiluminescence from a selected compound in the first portion of the sample; selectively detecting radiation emitted by chemiluminescence from conversion of the selected component in the second portion of the sample and at least the same compound in the first portion of the sample in the second portion of the sample; generating first electrical signals from the radiation selectively detected from the first portion of the sample and second electrical signals from the radiation selectively detected from the second portion of the sample; and comparing the first electrical signals with the second electrical signals in order to determine the presence or absence of selected compounds in the sample; wherein said heating, mixing, detecting, and generating steps are performed at substantially the same times for said first portion as for said second portion and wherein the step of comparing includes the steps of comparing the first electrical signals and the second electrical signals so as to cancel signals related to said portions of background components.

이 특허에 인용된 특허 (18) 인용/피인용 타임라인 분석

Dimmick Henry M. (Butler PA) Spryn Richard A. (Fenelton PA), Apparatus and an associated method for leak and volume inspection of containers.
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Tomasch Wilhelm (Halle DDX), Apparatus for advancing an elongate element.
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Mikasa Hajime (Moriyama JPX) Asano Ichiro (Kouka JPX) Kihara Nobutaka (Nara JPX) Ishimoto Shuichi (Kyoto JPX) Fujita Isao (Simotubayashi JPX) Kada Norio (Ibaraki JPX) Aoki Takeshi (Kyoto JPX) Imaki T, Apparatus for analyzing fluid by multi-fluid modulation mode.
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Bruening Wilhelm (Rio de Janeiro BRX) de Andrade Bruening Inai M. R. (Rio de Janeiro BRX) Martinez Concha Francisco J. (Rio de Janeiro BRX), Apparatus for the determination of chemical compounds by chemiluminescence with ozone.
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Rounbehler David P. (Plymouth MA), Detection of hydrazine compounds in gaseous samples by their conversion to nitric oxide-yielding derivatives.
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Fine David H. (Framingham MA), Detection system and method.
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Andersen Marlo R. (Veradale WA) Tiffany Thomas O. (Spokane WA) Gangitano Mario J. (Anaheim CA), Liquid handling.
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Saito Keizo (Tsuchiura JPX), Method for determination of concentration of smoke and apparatus therefor.
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Plester George (Essen DEX), Method for discrimination between contaminated and uncontaminated containers.
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Reid Neil M. (Thornhill CAX) Davidson William R. (Thornhill CAX), Method of detecting a contraband substance.
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Plester George (Essen GA DEX) Leddon Warren E. (Dunwoody GA) Dalsis David E. (Marietta GA), Methods of discriminating between contaminated and uncontaminated containers.
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Plester George (Essen GA DEX) Leddon Warren E. (Marietta GA) Dalsis David E. (Marietta GA), Methods of discriminating between contaminated and uncontaminated containers.
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Myers Michael J. (Lawrenceville GA) Harwick Warren J. (Milwaukee WI), Plastic container inspection process.
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Mandle Richard M. (Pompton Lakes NJ) Karsai Frank (Dover NJ) Krautheim Raymond S. (Nutley NJ 4), System for performing immunochemical and other analyses involving phase separation.
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Wreyford Donald M. (Antek Instruments ; Inc. ; 6005 North Freeway Houston TX 77076), Total sulfur analyzer system operative on sulfur/nitrogen mixtures.
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Rounbehler David P. (Bedford MA) Lieb David P. (Lexington MA) Achter Eugene K. (Lexington MA) Gernes David B. (Watertown MA) Tafreshi Abdul (Lowell MA), Vapor detection with high speed gas chromatography.
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McGown James B. (Attleboro MA) Bromberg Edward E. A. (Peabody MA) Noble Lynn W. (Lexington MA), Vapor sampling probe.
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Achter Eugene K. (Lexington MA) Burke Edward J. (Waltham MA) Miskolczy Gabor (Carlisle MA) Sonin Ain A. (Lexington MA), Walk-in inspection apparatus for producing air samples.
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이 특허를 인용한 특허 (8) 인용/피인용 타임라인 분석

Olstowski,Franek, Apparatus for trace sulfur detection using UV fluorescence.
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Danes, Jeffrey E.; Vorst, Keith L., Detection in thermoplastics.
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Kishkovich Oleg P. ; Goodwin William M., Detection of base contaminants in gas samples.
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Kishkovich, Oleg P.; Goodwin, William M., Detection of base contaminants in gas samples.
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Reese, Lars; Haase, Arne; Peters, Norbert, Plant and method for the recycling of plastics, preferably pet.
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Kishkovich Oleg P. ; Kinkead Devon A., Protection of semiconductor fabrication and similar sensitive processes.
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Kishkovich Oleg P. ; Kinkead Devon A., System for detecting base contaminants in air.
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Dussault Daniel ; Fine David H. ; Rounbehler David P., Water container inspection.
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A	생활필수품
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[미국특허] Method and system for sampling and determining the presence of compounds 원문보기

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