Purified meta-Cresol Purple dye perturbation: How it influences spectrophotometric pH measurements.

ABSTRACT: Ocean acidification, a phenomenon of seawater pH decrease due to increasing atmospheric CO₂, has a global effect on seawater chemistry, marine biology, and ecosystems. Ocean acidification is a gradual and global long-term process, the study of which demands high-quality pH data. The spectrophotometric technique is capable of generating accurate and precise pH measurements but requires adding an indicator dye that perturbs the sample original pH. While the perturbation is modest in well-buffered seawater, applications of the method in environments with lower buffer capacity such as riverine, estuarine, sea-ice meltwater and lacustrine environments are increasingly common, and uncertainties related to larger potential dye perturbations need further evaluation. In this paper, we as

SUBMITTER: Li X 

PROVIDER: S-EPMC7802507 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature