Abstract
The influence of various factors (laser power, optical path length, and signal level) on the accuracy and precision of thermal-lens measurements is studied. A general equation for the instrumental error of thermal-lens measurements is deduced. It is shown that the results of thermal-lens experiments for subnanogram concentrations of test compounds are in good agreement with the known equations of the theory of thermooptical spectroscopy.
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Proskurnin, M.A., Chernysh, V.V. & Filichkina, V.A. Some Metrological Aspects of the Optimization of Thermal-Lens Procedures. Journal of Analytical Chemistry 59, 818–827 (2004). https://doi.org/10.1023/B:JANC.0000040695.95051.be
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DOI: https://doi.org/10.1023/B:JANC.0000040695.95051.be