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A new 1,3-alternate 25,27-dibenzyloxy-26.28-bis-[3-propyloxy]-calix[4]arene-bonded siiicagel stationary phase (1,3-AltCaIixBz) has been prepared and used for separation of aromatic positional isomers by HPLC. The effect of organic modifier content and pH of the mobile phase on retention and selectivity were studied. The retention mechanism was aiso discussed. The results indicated that the stationary...
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