Extraction Techniques for Polycyclic Aromatic Hydrocarbons in Soils

Table 1

Bibliographic compilation of studies on extraction temperature.

Extraction technique	Temperature (°C)	PAHs studied	Effect of increasing temperature on PAH extraction efficiency (+/−)(a)	Reference
SFE	80, 100, 120	16 PAHs	+	[9]
MAE	70, 100	16 PAHs	+	[31]
ASE	70, 90, 175, 200	Naphthalene, pyrene	+	[42]
ASE	20, 40, 60, 100, 150	Acenaphthene, pyrene	+	[43]
SFE	80, 100, 120	Phenanthrene	+ in some case; − in others	[44]
MAE	80, 115, 145	17 PAHs	+	[45]
MAE	35, 50, 65, 80, 95	Fluorene, phenanthrene, anthracene, fluoranthene, pyrene	+	[46]
SFE	50, 80	Naphthalene, anthracene, pyrene, chrysene, benzo[a] pyrene, indeno[1,2,3-c,d] pyrene	−	[47]

(a)+: PAH extraction efficiency increased; −: PAH extraction efficiency decreased.