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Title: Method and apparatus for scientific analysis under low temperature vacuum conditions

A method and apparatus for scientific analysis of a sample under low temperature vacuum conditions uses a vacuum chamber with a conveyor belt disposed therein. One end of the conveyor belt is a cool end in thermal contact with the cold stage of a refrigerator, whereas the other end of the conveyor belt is a warm end spaced from the refrigerator. A septum allows injection of a sample into the vacuum chamber on top of the conveyor belt for spectroscopic or other analysis. The sample freezes on the conveyor belt at the cold end. One or more windows in the vacuum chamber housing allow spectroscopic analysis of the sample. Following the spectroscopic analysis, the conveyor belt may be moved such that the sample moves toward the warm end of the conveyor belt where upon it evaporates, thereby cleaning the conveyor belt. Instead of injecting the sample by way of a septum and use of a syringe and needle, the present device may be used in series with capillary-column gas chromatography or micro-bore high performance liquid chromatography.
 [1];  [1]
  1. (Gainesville, FL)
Issue Date:
OSTI Identifier:
University of Florida (Gainesville, FL) OSTI
Patent Number(s):
US 4942134
Contract Number:
Research Org:
University of Florida
Country of Publication:
United States
method; apparatus; scientific; analysis; temperature; vacuum; conditions; sample; chamber; conveyor; belt; disposed; therein; cool; thermal; contact; cold; stage; refrigerator; warm; spaced; septum; allows; injection; top; spectroscopic; freezes; windows; housing; allow; following; moved; moves; evaporates; cleaning; injecting; syringe; needle; device; series; capillary-column; gas; chromatography; micro-bore; performance; liquid; performance liquid; vacuum conditions; liquid chromatograph; chamber housing; spectroscopic analysis; gas chromatography; vacuum chamber; disposed therein; conveyor belt; liquid chromatography; gas chromatograph; thermal contact; temperature vacuum; scientific analysis; /436/250/356/422/