Determination of Partition Coefficients of Selected Model Migrants between Polyethylene and Polypropylene and Nanocomposite Polypropylene

Table 1

High performance liquid chromatography parameters employed in the analysis of Benzophenone, diphenylbutadiene (DPBD), and Uvitex.

Injection volume	20 µL
Eluents	A: Milli-Q water
	B: THF 30% methanolic solution (v/v)
	Time (min)	%  Eluent A	% Eluent B
Eluent gradient	0	30	70
	4	30	70
	10	0	100
	17	0	100
	Posttime: 3 minutes
	Substance	UV (nm)
Detection	Benzophenone	256
	DPBD	330
	Uvitex OB	372