Temperature Effects on Retention and Separation of PAHs in Reversed-Phase Liquid Chromatography Using Columns Packed with Fully Porous and Core-Shell Particles

Table 5

Repeatability of the analytical method using acetonitrile samples spiked with PAH at around 50 and 10 µg L⁻¹ and tap water samples spiked at around 10 µg L⁻¹.

PAH	Spiked acetonitrile samples				Spiked tap water samples
	At around 50 µg L^−1 ()		At around 10 µg L^−1 ()		At around 10 µg L^−1 ()
	Area (RSD%)	Concentration (µg L^−1)	Area (RSD%)	Concentration (µg L^−1)	Area (RSD%)	Concentration (µg L^−1)
Naph	1.75		1.87		1.75
Acy	0.19		1.03		0.19
Flu	0.63		2.31		0.63
Ace	0.19		1.11		0.19
Phe	1.08		1.42		1.08
Anth	0.54		2.44		0.54
Fluo	0.62		1.72		0.62
Pyr	0.29		1.71		0.29
Chr	0.56		2.11		nd	nd
BaA	0.95		2.17		0.95
BbF	1.38		1.88		1.38
BkF	0.84		1.05		nd	nd
BaP	1.48		0.62		nd	nd
DiAn	0.59		2.53		nd	nd
InPy	0.57		3.05		0.57
BePe	1.23		1.48		nd	nd

Acetonitrile samples were spiked with a mixture of PAHs at around 50 µg L⁻¹.
Acetonitrile samples were spiked with a mixture of PAHs at around 10 µg L⁻¹.
Tap water was spiked with a mixture of PAHs (Naph, Acy, Flu, Ace, Phe, Anth, Fluo, Pyr, BaA, BbF, and InPy) at around 10 µg L⁻¹. These PAHs were selected from their solubility values in water.
Concentrations were expressed as mean ± SD.
nd: not determined.