Hi, <br><br>I wonder if I have to run many pure sulphur compounds (the standards) by myself for fitting my sample's spectrum. Is there a spectrum database for sulphur compounds, e.g.,&nbsp; thiophene, sulphide, sulphate, disulphide, etc., so I can import the spectra to Athena to do the fitting?<br><br>Thank you.<br><br>Jenny<br><br><b><i></i></b><br>