Patent ID: 6341520
Filing Date: 2002-01-29
Classification: G01N

Abstract:
An apparatus for analyzing a breath sample, the apparatus comprising:(a) desorbing apparatus for desorbing a breath sample absorbed into an absorbent sample tube; (b) a chromatographic precolumn for passing the breath sample desorbed from the absorbent sample tube in a retention time prescribed for each constituent; (c) a sample receiving tube for receiving the exhaled breath sample; (d) a sample loop for aspirating a prescribed quantity of breath sample from the sample receiving tube; (e) a chromatographic main column for passing the breath sample having passed through the precolumn or the sample loop, in a retention time prescribed for each constituent; (f) a detector for detecting constituents having passed through the main column; (g) a data processor for generating a chromatograph for the constituents detected by the detector; (h) a sample valve which connects the sample loop and the main column when a breath sample is aspirated into the sample loop; (i) a standard gas bottle for supplying a standard gas; (j) a standard gas valve which connects the standard gas bottle and the sample loop when testing sensitivity of the main column.