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A new method for the determination of concentrations of impurities in quartz crystals

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4 Author(s)
Zecchini, P. ; Lab. de Cristallographie et Chimie Minerale, Univ. de Franche-Comte, Besancon, France ; Yamni, K. ; Viard, B. ; Dothee, D.

Analytical methods, principal component analysis and multivariate regression, have been applied to the spectroscopic infrared data and chemical analyses of quartz crystals in order to find the variations, covariations and internal relationships between data and samples. These analytical methods generate calibration models which can be used for classification and prediction. So differences and likenesses between samples can be well detected. An attempt has been made to get the chemical analysis of crystals by using only a room temperature infrared spectrum. The absorption in the infrared range was measured between 3300 to 3600 cm-1 and the chemical analyses performed by ICP

Published in:

Frequency Control Symposium, 1994. 48th., Proceedings of the 1994 IEEE International

Date of Conference:

1-3 Jun 1994