Abstract
Smoke samples produced by colorectral laparoscopic operations have been studied with a 13CO2 laser-based photoacoustic spectrometer. The most difficult problem was the existence of almost 100% CO2 present in the sample. The PA measurements were complemented with broad range FTIR spectra. An important result is the striking difference between sample spectra taken from different operations and patients. Apart from dominating CO2, a first spectral analysis revealed the existence of ~100 ppm water vapor and of unknown compounds that could not yet be identified but that are not identical with compounds found in related studies.
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