There is nothing magic about using the adaptive Kalman filter. The results are obtained from fitting only those portions of the data that can be accurately modeled. However, this method does not require the analyst to decide which data points to use and which to omit from the fitting procedure. The use of this algorithm can aid in the development of chemically valid models, a result that cannot always be obtained by examining the residuals of simple multiple linear least-squares fits. In addition, more accurate parameter estimates can be obtained, despite the presence of errors in the model.
KONTES precision shrunk, ground and polished high resolution tubes are geometrically true to our specifications. They are guaranteed to auto-lock and are especially suited to high frequency systems (greater than 200 MHz). Each and every one of our tubes is checked for camber and concentricity using NEW technology developed by KONTES. Variations in your readings will reflect sample differences rather than tube inconsistencies.
The author acknowledges support from the U.S. Department of Energy, Grant No. DE-FG0588ER13833.
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References (1) Gerow, D. D.; Rutan, S. C. Anal. Chim. Acta 1986, 184, 53. (2) Gerow, D. D.; Rutan, S. C. Anal. Chem. 1988, 60, 847. (3) Kalman, R. E. / Basic Eng. 1960, 82, 34. (4) Brown, S. D. Anal. Chim. Acta 1986, 181, 1. (5) Rutan, S. C. / Chemometrics 1987, 1, 7. (6) Rutan, S. C. Chemometrics and Intelligent Laboratory Systems 1989, 6, 191. (7) Rutan, S. C. / Chemometrics 1990, 4, 103. (8) Young, P. Recursive Estimation and Time-Series Analysis; Springer-Verlag: New York, 1984. (9) Rutan, S. C ; Brown, S. D. Anal. Chim. Acta 1984, 160, 99. (10) R u t a n , S. C.; Brown, S. D. Anal. Chim. Acta 1985, 167, 39. (11) Wilk, H. R.; Brown, S. D. Anal. Chim. Acta 1989, 225, 37. (12) Rutan, S. C ; Carr, P. W. Anal. Chim. Acta 1988, 215, 131. (13) Snyder, L. R. /. Chromatogr. Sci. 1978 16 223 (14) RutaA, S. C.; Carr, P. W.; Taft, R. W. J. Phys. Chem. 1989, 93, 4292.
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NIST
UNITED STATES DEPARTMENT OF COMMERCE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
The National Institute of Standards and Technology has developed a series of SRM's to serve as calibrants, test mixtures, and standardization materials for Quality Control of analytical instrumentation and methodology.
NBS
ISA N
