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. Author manuscript; available in PMC: 2012 Dec 28.
Published in final edited form as: J Am Chem Soc. 2011 Dec 2;133(51):20869–20877. doi: 10.1021/ja207680e

Figure 1.

Figure 1

Potentiometric CO32− response of an ISE based on a liquid membrane with perfluoroperhydrophenanthrene doped with (1) 1.0 mM cationic sites, 1, and 1.5 mM ionophore Mn-1, (2) 2.0 mM cationic sites, 1, and 1.5 mM ionophore Mn-1, and (3) 1.0 mM anionic sites, 2, and 4.0 mM ionophore Mn-1. Sample solutions contained sodium bicarbonate buffered with 10 mM Tris-H2SO4 to pH=8.75. Response curves were shifted vertically relative to one another for enhanced clarity.