Fig. 1. Diagram of home-made dye laser

Fig. 2. Experimental setup diagram of LIBS-LIF technology

Fig. 3. Partial energy levels of lead atoms corresponding to LIF experiment as well as exciting and detecting wavelengths of LIF

Fig. 4. Temporal profiles of plasma emission signal at wavelength of 405.78 nm with (a) LIBS only and (b) LIBS-LIF

Fig. 5. Relationship between signal-to-background ratio and interpulse delay of LIF for lead atoms

Fig. 6. Calibration curve for analyzing lead in water formulated by LIBS-LIF simultaneous technique at low concentration

Fig. 7. Background intensities at wavelength of 404 nm measured for 10 times repeatedly and their standard deviation