... 682 Chemistry Letters Vol.37, No.7 (2008) Copyright Š 2008 The Chemical Society of Japan Page 2. ... 11BF4 Ā. Figure 3. Anion chromatogram for EMIBF4 diluted by ultra- pure water. Eluent: 2.7 mM Na2CO3 + 0.3 mM NaHCO3 aq. Chemistry Letters Vol.37, No.7 (2008) 683 ...