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FTIR-ATR spectra of reference standards used for calibration—genuine (pure) beeswax, and adulterants (paraffin— Paraffinum solidum , stearic acid— Acidum stearicum ).
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FTIR-ATR spectra of reference standards (paraffin-beeswax mixtures containing different proportions of paraffin) used for calibration.
FTIR-ATR spectra of reference standards (stearic acid-beeswax mixtures containing different proportions of stearic acid) used for calibration.
Prediction performance parameters of the calibration curve constructed for determination of the paraffin share in beeswax: A scatter plot of FTIR-ATR predicted values (instrument r...
Residuals of FTIR-ATR prediction in the spectral region with an absorption maximum at 1738 cm -1 .
A scatter plot of FTIR-ATR predicted values (instrument response) versus real (known) paraffin share values using the spectral region with an absorption maximum at 1171 cm -1 .
Residuals of FTIR-ATR prediction in the spectral region with an absorption maximum at 1171 cm -1 .
Prediction performance parameters of the calibration curve constructed for determination of the stearic acid share in beeswax: A scatter plot of FTIR-ATR predicted values (instrume...
Residuals of FTIR-ATR prediction in the spectral region with an absorption maximum at 1710 cm -1 .
A scatter plot of FTIR-ATR predicted values (instrument response) versus real (known) stearic acid share values using the spectral region with an absorption maximum at 11281 cm -1...