In this study a new derivative method is introduced for the computation of color recipe in bicomponent mixtures of textile dyes. The reflectance spectra of the samples dyed with different binary mixtures of dyes were recorded between 400 and 700 nm. The derivative amplitudes of the Kubelka—Munk function at appropriate zero-crossing wavelengths were selected for the determination of dyes in the mixtures. The obtained results indicate that the developed zero-crossing-point derivative method is more accurate than the normal Kubelka—Munk method. The proposed derivative method is simple, accurate, and suitable for quantitative analysis of samples dyed with binary mixed shades.
Judd, D.B., and Wyszecki, G., "Color in Business, Science and Industry," 3rd edn, John Wiley & Sons Inc, New York, 1975.
2.
Chourdhury, A.K.R., "Modern Concepts of Color and Appearance", Science Publishers, New Hampshire, 2000.
3.
Allen, E., "Colorant Formulation and Shading, in Optical Radiation Measurements," Vol. 2, Color measurements, Grum, F., and Bartleson, J. (eds), Academic Press, New York, 1980.
4.
Nobbs, J.H., Kubelka-Munk Theory and the Prediction of Reflectance, Rev. Prog. Color (SDC), 15, 66-75 (1985).
5.
Berns, R.S., "Billmeyer and Saltzman's Principles of Color technology", 3rd edn, John Wiley & Sons, New York, 2000.
6.
McGinnis, P.H. , Spectrophotometric Color Matching with the Least Squares Technique, Col. Engin., 5, 22-27 (1967).
7.
Talsky, G., "Derivative Spectrophotometry Low and Higher Order," 1st edn, VCH Publishers, New York, 1994.
8.
José Maria, F.R., and José Antonio , F.F., Application of the Second Derivative of the Kubelka-Munk Function to the Semi-Quantitative Analysis of Roman Paintings, Col. Res. Applic., 30, 448-456 (2005).
9.
El-sayed, A-A.Y. , and El-Salem, N.A., Recent Developments of Derivative Spectrophotometry and Their Analytical Application, Anal. Sci., 21, 595-612 (2005).
10.
Karpinska, J., Derivative Spectrophotometry-Recent Applications and Directions of Developments, Talanta., 64, 801-804 (2004).
