Assertion: alkaloid's use | /r/HasProperty | 20 : 80 v/vratio
Facets:
Source sentences:
text: It was found that the use of a H 2 O/CH 3 CN (20 : 80 v/v) ratio, as suggested by NMR spectroscopic investigation of solvent mixtures, provided a suitable mobile phase which proved ideal for thebaine analysis by LC-ESI-MS.