A high-performance liquid chromatography method based on pre-column derivatization with thepyrylium salts (4-[p-(N,N-dimethylamino)phenyl]-2,6-diphenylpyrylium perchlorate (LN1) and 2,4,6-triphenylpyrylium tetrafluoroborate ...
A highly specific and sensitive chromatographic method for the
determination of sulfide ions was developed. The procedure is based
on the sensitive and specific reaction of sulfide ions with 4-[p-(N,Ndimethylamino)
ph ...