Intracavity laser spectroscopy method for analyses of trace elements

Victor S. Burakov; A. V. Isaevich; P. Y. Misakov; S. N. Raikov

doi:10.1117/12.197400

2 January 1995 Intracavity laser spectroscopy method for analyses of trace elements

Victor S. Burakov, A. V. Isaevich, P. Y. Misakov, S. N. Raikov

Proceedings Volume 2370, 5th International Conference on Laser Applications in Life Sciences; (1995) https://doi.org/10.1117/12.197400
Event: Laser Applications in Life Sciences: 5th International Conference, 1994, Minsk, Belarus

Abstract

The intracavity laser spectrometer with graphite furnace electro-thermal atomizer and high- resolution echelle spectrograph that provides determination of trace amounts of lithium, strontium, barium and manganese in water is described. The detection limits of elements tested are as a rule much lower than those obtained by modern conventional spectrometers. They are: 0.03 ng/l for lithium, 0.15 ng/l for strontium and 0.2 ng/l for barium. This laser method and equipment are also proposed for direct determination of trace iodine contents in water and biological media with minimal sample preparation in conditions of laser probing vapors over a surface of heated liquid in a closed cell. The detection limit of iodine molecules is 15 (mu) g/l. Linear standard calibration curves were considerably extended by measuring total absorption of elements in laser spectra. The precision of the intracavity analysis was found to be approximately 10% for the lowest element content.

Citation Download Citation

Victor S. Burakov, A. V. Isaevich, P. Y. Misakov, and S. N. Raikov "Intracavity laser spectroscopy method for analyses of trace elements", Proc. SPIE 2370, 5th International Conference on Laser Applications in Life Sciences, (2 January 1995); https://doi.org/10.1117/12.197400

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