“…For evaluating the performance of the different approaches, a set of 15 sulphonamides studied in previous work [8,9,12] was considered: (1) sulphacetamide, (2) sulphachloropyridazine, (3) sulphadiazine, (4) sulphadimethoxine, (5) sulphaguanidine, (6) sulphamerazine, (7) sulphamethazine, (8) sulphamethizole, (9) sulphamethoxazole, (10) sulphamonomethoxine, (11) sulphanilamide, (12) sulphapyridine, (13) sulphaquinoxaline, (14) sulphathiazole and (15) sulphisoxazole. The chromatographic behaviour of these compounds was examined with columns of different lengths containing four different stationary phases, supplied by Advanced Chromatography Technologies Ltd. (ACE, Aberdeen, Scotland, UK): phenyl, cyano, C18-HL and C18-AQ.…”