Laser induced fluorescence spectroscopy in flames

Temperature measurement techniques for gas and liquid flows using thermographic phosphor tracer particles

Temperature measurements by light-scattering methods

Recent advances in the measurement of strongly radiating, turbulent reacting flows

Lophine chemiluminescence for metal ion determinations

Flame temperature measurements by means of atomic fluorescence spectrometry

A new optical setup for increasing the intensity of atomic fluorescence flame spectrometry is presented. The arrangement consists of two concave spherical mirrors and an elliposidal mirror whose primary focus is located at the flame position, and secondary at the entrance slit of the monochromator. Approximately 10 times gain in the measured intensities was obtained. The system is also useful for flame emission work, for which about five times gain was observed. With a low background flame such as the air–H2 for the N2–H2 diffusion flame and 400 μ slits, calcium can be detected at the level of 0.005 μg/ml. Moreover, the observed thermally assisted anti-Stokes fluorescence of In and Ga can be of analytical importance since the detection limits with a total consumption burner and the air–H2 flame were found to be 0.015 and 0.02 μg/ml, respectively. Detection limits in atomic fluorescence for Cr, Tl, In, and Fe are also presented.

P. Benetti

Papers

Flame temperature measurements by means of atomic fluorescence spectrometry

A New Optical System for Flame Spectroscopy with Special Reference to Thermally Assisted Anti-Stokes Fluorescence Applications:

A Versatile Burner for Flame Spectrometry. EUR 4598.