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COMBINATION OF SPECTROGRAPH BARRIER GAS, CARRIER GAS AND COOLING OF CCD
COMBINATION OF SPECTROGRAPH BARRIER GAS, CARRIER GAS AND COOLING OF CCD
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机译：光谱屏障气体，载体气体与CCD冷却的组合
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摘要
A method and a solution in a gas chromatography –UV spectrophotometry detector to efficiently increase the flow of photons through the spectrograph to a light sensitive element or elements and maintain functionality despite the absence of a physical window for the light to enter the spectrograph and or decrease the temperature of a photon collecting device like a CCD by expansion of gas in close proximity with the photon collecting device and or with thermal contact with the photon collecting and where the gas can be directed and used as a barrier gas flow in an opposite direction to the light out from the spectrograph and or where the gas can be directed to the entrance of a gas chromatography column as a carrier gas. One particular use is for detection of metabolic substances emanating from living tissues and in particular that can be found in exhaled air from humans and animals for detection of various diseases. Substances can be such as nitrogen oxide, urea, acetone, isoprene, carbon disulfide coming from diseases like cancer, ulcers, asthma, diabetes etc.
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