THE STUDIES ON THE USE OF CALIX[4]ARENE IN CAPILLARY ELECTROPHORESIS

The behavior of water-soluble p-sulfonic calix[4]arene in capillary el ectrophoresis was first reported. A mixture of nitrophenol isomers was completely separated using only 3 mmol/L calixarene. The efficiency o f 3.0 X 10(5) plates/m was achieved and the detection limits were 33.6 , 21.8 and 16.2 pg for o-, m- and p- nitrophenol respectively under th e conditions fused-silica capillary (44 cm X 50 mu m i.d., effective l ength 37 cm), phosphate buffer (50 mmol/L pH 5.0), 25 degrees C, 14 kV , 275 nm and 1 s vacuum load.