TY - RPRT TI - Ionic liquid-based liquid-phase microextraction, a new sample enrichment procedure for liquid chromatography. AU - Jing-fu Liu AU - Yu-guang Chi AU - Gui-bin Jiang AU - Chao Tai AU - Jin-feng Peng AU - Jing-Tian Hu PY - 2004 DO - 10.1016/j.chroma.2003.11.005 UR - https://pubmed.ncbi.nlm.nih.gov/14763740/ ID - 14763740 ER -