Hemoglobin is a major constituent of erythrocytes. Because it is non-diffusable and confined within a cell membrane and because of its buffering powers, three major physiochemical equilibria are involved in any acid or base change in blood. Ionic, osmotic and Donnan balance must be main­ tained.16 During the acidosis phase of cell­ ular respiration and increasing Pco2, bi­ carbonate enters eryt...

Sodium bicarbonate is sometimes used to aid in the extraction of total polyphenols. Its main effect increase pH solution. Raising can cause changes chemical structure This lead variations their biological properties, solubility and stability. work studied sodium carbonate on by aqueous decoction polyphenols from leaves Combretum micranthum. The content phenolic compounds extracts was estimated ...

Carbonate and bicarbonate are the common anions found in significant concentrations in many natural waters, and are exceptionally strong complexation agents for actinide ions. Seepage, flooding and mining waters from the uranium mining area in the south-east of Germany (Saxony and Thuringia) contain relatively high amounts of magnesium, calcium, carbonate and sulphate ions. In these waters the ...

The freshwater common pond snail Lymnaea stagnalis produces embryos that complete direct development, hatching as shell-bearing individuals within 10 days despite relatively low ambient calcium and carbonate availability. This development is impaired by removal of ambient total calcium but not by removal of bicarbonate and/or carbonate. In this study we utilized pharmacological agents to target...

A lab-scale seawater/mineral carbonate gas scrubber was found to remove up to 97% of CO(2) in a simulated flue gas stream at ambient temperature and pressure, with a large fraction of this carbon ultimately converted to dissolved calcium bicarbonate. After full equilibration with air, up to 85% of the captured carbon was retained in solution, that is, it did not degas or precipitate. Thus, abov...