[특허]Recirculating filtration system for use with a transportable ion mobility spectrometer

Recirculating filtration system for use with a transportable ion mobility spectrometer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01J-049/40 H01J-049/04
출원번호	US-0628147 (1996-04-04)
발명자 / 주소	Carnahan Byron Lee Tarassov Alexander Semenovich
출원인 / 주소	Mine Safety Appliances Company
대리인 / 주소	Titus & McConomy
인용정보	피인용 횟수 : 91 인용 특허 : 0

초록 ▼

Generally, the present invention provides a recirculating filtration system for use with a transportable ion mobility spectrometer. One preferred embodiment of the transportable recirculating filtration system comprises a pump connected with a set of filters and flow sensors to an ion mobility spectrometry (IMS) sensor. The IMS sensor's outlet flow is cleaned by the filters and recirculated by the pump back into the IMS sensor as the carrier fluid stream flow. A portion of the IMS sensor's outlet flow equal to the amount of flow introduced into the sensor is exhausted from the filtration system to maintain a constant total flow volume through the system as the sample is being taken. An alternate preferred embodiment of the present invention provides a transportable recirculating filtration system for measuring an unknown concentration of a selected ionizable contaminant substance such as benzene present in a sample fluid stream in which other substances may coexist. The filtration system of the alternate preferred embodiment comprises a pump connected with a set of filters, flow sensors, and a plurality of valves to a device for introducing a controlled concentration of the selected ionizable contaminant into an ion mobility spectrometry (IMS) sensor. The unknown concentration is calculated using the Standard Addition Method. The alternate preferred embodiment of the present invention also provides a recirculating filtration system which can be used to calibrate the IMS sensor by establishing which ionogram structures result from the presence of a particular analyte in the sample stream. A known concentration of an analyte is introduced into the sample stream. The resulting ionogram is compared to an ionogram recorded with no contaminants present. By comparing these spectra, a correlation can be made between the positions of features in the ionogram and the analyte which gives rise to these features.

대표청구항 ▼

[ What is claimed is:] [1.] A fluid filtration system for use with an ion mobility spectrometer, comprising:A. a pump in communication with both an outlet and a carrier stream inlet of the ion mobility spectrometer for recirculating ion mobility spectrometer outlet fluid flow into the carrier stream inlet;B. at least one filter in communication with the pump for removing impurities from the recirculated flow; andC. an exhaust in communication with the pump for removing a portion of the recirculated flow from the system, wherein the amount of fluid removed is equal to the amount of fluid entering the sample stream inlet of the ion mobility spectrometer.

이 특허를 인용한 특허 (91)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Recirculating filtration system for use with a transportable ion mobility spectrometer 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (91)

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Recirculating filtration system for use with a transportable ion mobility spectrometer 원문보기

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연구과제 타임라인

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