A. V. Chugunov

Multifunction laser gas analyzer

A totally computerized multi-function laser gas analyzer operating within 3 micrometers spectral region is described. The application of this device for IR absorption high resolution spectroscopy, for environmental control (long-path gas analysis), and for diseases diagnosis is discussed.

Application of tunable infrared lasers for diagnosis of diseases by analysis of expired lung air

The using of laser spectroscopy methods are proposed for diagnosis of diabetes through the measurements of acetone concentration in respiratory air. Detection of acetone concentration was performed with laser spectrometer operating in the 3 microns spectral range. Minimal detectable concentrations were found. Acetone components in expired lung air of diabetics (for adult as well as juvenile patients) are detectable by absorption spectra measurements in single pass 1m-length cell. Digital smoothing and other methods were used to improve signal to noise ratio.

Analysis of expired lung air by laser spectroscopy methods for diagnosis of diseases

The laser spectroscopy methods are proposed for organic constituents of the expired lung air detection for diagnosis of diseases. The results of acetone concentration measurements are presented.