Fig. 1. Block diagram of fluorescence spectrum measurement system

Fig. 2. Diagram of detection flow

Fig. 3. Test equipment diagram of detection reagent response curve

Fig. 4. Fluorescence spectra of detection reagent at different temperatures. (a) Original fluorescence spectra; (b) fluorescence spectra after smoothing

Fig. 5. Variation of fluorescence intensity of detection reagent changes with temperature. (a) At characteristic wavelength 487 nm; (b) in characteristic wavelength band of 462--520 nm

Fig. 6. Correlation analysis between gas chromatography and fluorescent spectrometry

Fig. 7. Skin cholesterol contents of normal and atherosclerosis high risk groups