Correction to Spectrophotometric Calibration of pH Electrodes in

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Addition/Correction pubs.acs.org/est

Correction to Spectrophotometric Calibration of pH Electrodes in Seawater Using Purified m‑Cresol Purple Regina A. Easley and Robert H. Byrne* Environ. Sci. Technol. 2012, 46, 5018−5024; DOI: 10.1021/es300491s In the original published version of the manuscript, eq 12 is appropriate to T = 273.15 K (t = 0 °C) and S = 35. The equation appropriate to T = 298.15 K and S = 35, is given as pHT (25°C , S = 35) = 7.6479 + log

(R − 0.0057) (1 − 0.0568R ) (12)

Published: April 24, 2015 © 2015 American Chemical Society

5841

DOI: 10.1021/acs.est.5b01226 Environ. Sci. Technol. 2015, 49, 5841−5841