TABLE 4.

TBBPA and its potential intermediates were found during the photodegradation process by graphene–TiO₂ in the presence of UV light.

Product	Compounds	Retention time/min	m/z
	TBBPA	1.625	544
A	tri-BBPA	1.433	465
B1	4-(2-(3,5-dibromo-4-hydroxyphenyl)propan-2-yl)benzene-1,2-diol	6.979	401
B2	3-bromo-5-(2-(3-b romo-4-hydroxyphenyl)propan-2-yl)benzene-1,2-diol	6.979	401
C1	di-BBPA	1.475	386
C2	di-BBPA	1.475	386
D	mono-BBPA	1.634	307
E	BPA	23.182	227