Seawater Hydrogen-Ion Concentration: Vertical Distribution

Abstract

Two major processes that affect the vertical distribution of hydrogen-ion concentration in the sub-Arctic region of the northeastern Pacific Ocean are the apparent oxygen utilization by marine organisms and, to a lesser extent, carbonate dissolution.

A review of sodium chloride-based electrolytes and materials for electrochemical energy technology

“…3,14,15 Hydrogen production from seawater splitting has been identied as a candidate for reducing carbon emissions and accelerating global carbon neutrality. [16][17][18] The development of efficient water splitting technology based on NaCl solution as the best representative of seawater, including the hydrolysis reaction of active metallic, [19][20][21][22] electrocatalysis, [23][24][25][26] photocatalysis [27][28][29][30][31] and photoelectrocatalysis, 32,33 has become the focus of many researchers and has made great progress. In addition, based on the rapid development of electrochemical storage technology, researchers have also invested a great deal of effort in developing efficient electrochemical desalination technologies to reverse the status of the global freshwater crisis.…”

Geochemistry of carbon dioxide in seawater at the Hawaii Ocean Time Series Station, ALOHA

“…The idea that pH is not a conservative property of ocean water is not new [Park, 1968;Sugiura, 1969 The various mineral phases of calcium carbonate each have different apparent solubility products depending on the stability of the mineral in aqueous solutions. Aragonite, for instance, is more soluble than calcite, so the ion concentration product of aragonite at equilibrium is greater than the concentration product for calcite [Berner, 1976;Plummer and Busenberg, 1982;Sass et al, 1983].…”

“…The idea that pH is not a conservative property of ocean water is not new [Park, 1968;Sugiura, 1969 (2)). …”

Metabentonite Composition Related to Sedimentary Facies in the Lower Silurian of Estonia

“…Present-day ocean water shows maximum pH values (8.0-8.2) in the upper 100 m, and a rapid decrease down to 7.4-7.6 at a depth of 200 m (Park, 1966(Park, , 1968). This generally supports the above interpretation.…”