H. Groll et al., WAVELENGTH MODULATION DIODE-LASER ATOMIC-ABSORPTION SPECTROMETRY IN ANALYTICAL FLAMES, Spectrochimica acta, Part B: Atomic spectroscopy, 49(12-14), 1994, pp. 1463-1472
The potential of wavelength modulation laser atomic absorption spectro
metry in analytical flames is demonstrated by the measurement of titan
ium, cesium and chromium applying fundamental and frequency doubled ra
diation of commercially available semiconductor diode lasers. In depen
dence on the radiation power, absorbances of the order of 10(-4)-10(-6
) are measured, which reveal very low detection limits even when weak
absorption lines are used.