8
Views
5
CrossRef citations to date
0
Altmetric
Original Article

Functional Measurements on Carboxymethylated Hemoglobin, a Potential Blood Substitute: Effects of Sodium Chloride on Ph Values That Influence the Alkaline Bohr Effect

, &
Pages 133-141 | Published online: 11 Jul 2009
 

Abstract

The leakage of chloride from electrodes during measurements of the alkaline Bohr effect of hemoglobin (by the proton release method) amounted to 1-5 mM concentration of the anion depending on the type of electrode employed. This concentration, together with the amount of chloride found to be intrinsically bound to hemoglobin (0.2-0.6 mM), could mask the contribution of chloride to various hemoglobin functions. In addition, the concentration of chloride was found to affect the pH of buffers as measured either with a pH meter or with the dye, cresol red. Thus, for 20 mM phosphate buffer, the pH was lowered almost 0.4 pH units in the presence of 0.30 M chloride. For Tris-acetate buffer, the same concentration of chloride led to an increase in pH of about 0.05 units.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.