Anal. Chem. 1993, 65, 2407
CORRECTIONS Electroosmotic Flow Control and Monitoring with an Applied Radial Voltage for Capillary Zone Electrophoresis Mark A. Hayes and Andrew G. Ewing' (Anal. Chem.
1992,64,512-516). Equation 5 is incorrect. It should read K
= (2NoZ2C2/Dok7')'/2
where No is the number concentration of counterions at the surface, not the viscosity. Equation 13 is missing a parenthesis. It should read v, = E,,,(D~qo)(e-")(2kT/t) X
sinh-'(a,
+ asi)[500a/D,RTCl'/2
The theoretical plots in Figure 3 were calculated using a 375pm 0.d. In the last sentence of the second paragraph of the Discussion, the references to parts a and b of Figure 3 are reversed.
Effects of Buffer pH on Electroosmotic Flow Control by an Applied Radial Voltage for Capillary Zone Electrophoresis Mark A. Hayes, Indu Kheterpal, and Andrew G. Ewing' (Anal. Chem. 1993,65,27-31). Equation 3 is incorrect. It should read K
(m0pe2/€bk7')1/2
where No is the number concentration of counterions at the surface, not the viscosity. The terms for the elementary charge (e) and the permittivity of the buffer (€b) have been defined according to more conventional symbols.
Enzyme-Based Fiber Optic Zinc Biosensor Richard B. Thompson* and Eric R. Jones (Anal.
Chem. 1993,65,730-734). In the last paragraph of the Introduction, the first paragraph of the Experimental Section, and in Figure 1, we have incorrectly indicated the isomer of N,N-dimethylaminonaphthalenesulfonamide used. The actual isomer used in all cases was 5-(N,N-dimethylamino)naphthalene-l-sulfonamide.
0003-2700/93/0365-2407$04.00/0
0 1993 American Chemlcal Soclety
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