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

Table 2

High performance liquid chromatography parameters employed in the analysis of diphenyl phthalate (DPP), 2-isopropylthioxanthone (ITX), and butylated hydroxyl toluene (BHT).

Injection volume	10 µL
Eluents	A: Milli-Q water
	B: Acetonitrile
	Time (min)	% Eluent A	% Eluent B
Eluent gradient	0	40	60
	1	40	60
	17	0	100
	20	0	100
	Posttime: 5 minutes
	Substance	DAD (nm)	FLD (nm)
Detection	DPP	205	—
	ITX	—	Ex 250; Em 410
	BHT	205	—