Abstract
The influence of the process of signal filtration on the shape and noise component of analytic signals in electrothermal atomic-absorption spectrometry at rates of heating of graphite tube furnaces on the order of 10,000 K·sec–1 is investigated. A digital filter with finite impulse response and symmetric coefficients by means of which the noise component of the signals can be reduced by 90% without any distortion in the signal shape is synthesized. This also helps to realize a 90% reduction in the detection threshold of elements.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Yu. M. Sadagov and S. A. Laptev, Izmer. Tekh., No. 5, 18 (2001).
I. S. Gonorovskii, Radio Engineering Networks and Signals [in Russian], Sov. Radio, Moscow (1971).
Yu. M. Sadagov and S. A. Laptev, Zh. Analit. Khim., 53, No. 10, 914 (1998).
Yu. M. Sadagoff [Sadagov], Spectrocim. Acta. Part B, 55, 905 (2000).
L. J. Peyton and W. Walsh, Analog Electronics with Operational Amplifiers [Russian translation], Binom, Moscow (1994).
L. M. Gol'denberg, B. D. Matyushkin, and M. N. Polyak, Digital Signal Processing [in Russian], Radio i Svyaz', Moscow (1985).
Rights and permissions
About this article
Cite this article
Laptev, S.A., Sadagov, Y.M. Reducing the Detection Threshold in Electrothermal Atomic-Absorption Spectrometry. Measurement Techniques 44, 821–825 (2001). https://doi.org/10.1023/A:1012996301569
Issue Date:
DOI: https://doi.org/10.1023/A:1012996301569