Ontology highlight
ABSTRACT:
SUBMITTER: Liu X
PROVIDER: S-EPMC3103190 | biostudies-other | 2011 Jun
REPOSITORIES: biostudies-other
Liu Xuewu X Patsavas Mark C MC Byrne Robert H RH
Environmental science & technology 20110512 11
Spectrophotometric procedures allow rapid and precise measurements of the pH of natural waters. However, impurities in the acid-base indicators used in these analyses can significantly affect measurement accuracy. This work describes HPLC procedures for purifying one such indicator, meta-cresol purple (mCP), and reports mCP physical-chemical characteristics (thermodynamic equilibrium constants and visible-light absorbances) over a range of temperature (T) and salinity (S). Using pure mCP, seawat ...[more]