Determination of wool wax in raw wool by raman spectroscopy |
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Authors: | Jeffrey S. Church Ashley S. Davie David W. James Wah-Hing Leong Daryl J. Tucker |
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Affiliation: | (1) Division of Wool Technology, Commonwealth Scientific and Industrial Research Organisation, 3216 Belmont, Victoria, Australia;(2) School of Biological and Chemical Sciences, Faculty of Science and Technology, Deakin University, 3217 Geelong, Victoria, Australia |
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Abstract: | A Raman spectroscopic method for the determination of wool wax content in raw wool has been developed. The analyses were performed on 250-mg wool samples by using a spectral component band resolution method. The method has a moderate sample throughput rate, is non-destructive and does not require the use of solvents. Samples ranging between 0.5 and 31% (w/w) wool wax were analyzed. The results obtained were compared with those obtained by a solvent extraction method. If the nonextractable lipid content of the wool is considered, the results of the Raman spectral and extraction methods were in excellent agreement. From a practical standpoint, the minimum detection limit of the method is 3% wax. In general, the precision of the Raman spectroscopic method was better than that obtained for the extraction method. |
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Keywords: | FT-Raman spectroscopy quantitation raw wool wool wax |
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