Method of correcting spectral data for background

Details Method of correcting spectral data for background Method of correcting spectral data for background

1991-02-27

1994-03-01

Teska, Kevin J.

Boots, shoes, and leggings

364498, 36457101, 364554, G06F 1520, G06F 1546

Patent

active

052914267

ABSTRACT:
A method of producing spectral data corrected for background includes generating spectral data, ascertaining background and subtracting background points to produce the corrected data. To ascertain background the spectral data are masked initially at the spectral peak of interest, and a least squares curve is fitted to the masked data. A runs test is performed to detect whether the number of runs exceeds a selected significance level. If so, the data are further masked and a curve is refitted. These steps are iterated until no further significant number of runs is detected. Similar testing for outliers is then effected with similar masking, a final curve represents the background level.

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"Handbook of Mathematical Functions" by M. Abramowitz and I. Stegun, Dover (1965).
"A New Baseline Correction Algorithm Using Objective Criteria" by J. Liu and J. L. Koenig, Applied Spectroscopy 41, 447-449 (1987).
"Applied Regression Analysis" by N. Draper and H. Smith, Wiley 2nd ed. (1981), pp. 157-162.

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