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Liu JF, Chi YG, Jiang GB, Tai C, Peng JF, Hu JT. Ionic liquid-based liquid-phase microextraction, a new sample enrichment procedure for liquid chromatography. J Chromatogr A. 2004 Feb 13;1026(1-2):143–7. doi: 10.1016/j.chroma.2003.11.005. PMID: 14763740. |