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Ionic Liquids Containing The Tris(Pentafluoroethyl)Trifluorophosphate Anion: A New Class Of Highly Selective And Ultra Hydrophobic Solvents For The Extraction Of Polycyclic Aromatic Hydrocarbons Using Single Drop Microextraction, Cong Yao, William R. Pitner, Jared L. Anderson
Ionic Liquids Containing The Tris(Pentafluoroethyl)Trifluorophosphate Anion: A New Class Of Highly Selective And Ultra Hydrophobic Solvents For The Extraction Of Polycyclic Aromatic Hydrocarbons Using Single Drop Microextraction, Cong Yao, William R. Pitner, Jared L. Anderson
Jared L. Anderson
A new class of ionic liquids (ILs) containing the tris(pentafluoroethyl)trifluorophosphate (FAP) anion are paired with imidazolium, phosphonium, and pyrrolidinium cations and used as extraction solvents in direct immersion single drop microextraction (SDME) studies coupled to high performance liquid chromatography (HPLC). The selectivity and sensitivity of the extraction method can be tuned and manipulated by varying the cationic component of the IL, thereby providing larger enrichment factors for a variety of analytes, including polycyclic aromatic hydrocarbons (PAHs). Compared to other hydrophobic ILs containing the hexafluorophosphate (PF6−) and bis[(trifluoromethyl)sulfonyl]imide (NTf2−) anions, FAP-based ILs are significantly more hydrophobic and hydrolytically stable permitting them …