Table 3.

Characteristic parameters of identified compounds after UV irradiation of SA.

Peak No	tR, min	Molar mass	[M + H]+	MS/MS	λmax, nm	Compound	Molecular structure
1	1.01	172.03	173.61	155.97	262	Sulfanilamide
				125.03
				108.02
				93.06
2	1.51	173.01	174.03	156.01	249	Sulfanilic acid
				108.02
				93.03
3	1.19	93.05	94.05	81.03	232	Aniline
				77.03	284
				51.02
4	0.82	184.01	185.01	180.68	286	Benzidine
				166.94
				142.52
				102.21