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Additional file 1 of Orthobiologics and hyaluronic acid usage in the Netherlands: an electronic survey of 265 orthopaedic surgeons and sports physicians
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FTIR-ATR spectra of stearic acid versus ‘stearin’ (commercially available as “stearin for candles”, a mixture of stearic and palmitic acid) showing the same spectral features....
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S2 Fig -
Location of the samples provided by the beekeepers (N = 98).
FTIR-ATR spectra of reference standards used for calibration—genuine (pure) beeswax, and adulterants (paraffin— Paraffinum solidum , stearic acid— Acidum stearicum ).
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 .