scholarly journals Hydrogen Ion Concentration, Dissolved Oxygen, and Carbon Dioxide dislsoved in the Lake Waters of the Tugaru Zyûniko Lake Group. Limnological Studies of the Tugaru Zyûniko Lake Group. Part 3

1937 ◽  
Vol 13 (11) ◽  
pp. 1013-1032
Author(s):  
Shinkichi YOSHIMURA
Keyword(s):  
Carbon Dioxide ◽  
Dissolved Oxygen ◽  
Hydrogen Ion ◽  
Ion Concentration ◽  
Hydrogen Ion Concentration ◽  
Lake Waters ◽  
Group Part

The Hydrogen Ion Concentration of Certain Wisconsin Lake Waters

1924 ◽  
Vol 43 (4) ◽  
pp. 177 ◽  
Author(s):  
C. Juday ◽  
E. B. Fred ◽  
Frank C. Wilson
Keyword(s):  
Hydrogen Ion ◽  
Ion Concentration ◽  
Hydrogen Ion Concentration ◽  
Lake Waters

scholarly journals REGULATION OF THE HYDROGEN ION CONCENTRATION AND ITS RELATION TO METABOLISM AND RESPIRATION IN THE STARFISH

1926 ◽  
Vol 10 (2) ◽  
pp. 345-358 ◽  
Author(s):  
Laurence Irving
Keyword(s):  
Carbon Dioxide ◽  
Sea Water ◽  
Carbon Dioxide Production ◽  
Hydrogen Ion ◽  
Ion Concentration ◽  
Coelomic Fluid ◽  
Vital Function ◽  
Hydrogen Ion Concentration ◽  
Optimum Ph ◽  
Patiria Miniata

The normal reaction of the cœlomic fluid in Patiria miniata and Asterias ochraceus is pH 7.6, and of the cæca, 6.7, compared with sea water at 8.3, all without salt error correction. A medium at pH 6.7–7.0 is optimum for the cæca for ciliary survival and digestion of protein, and is maintained by carbon dioxide production. The optimum pH found for carbon dioxide production is a true one for the effect of hydrogen ion concentration on the tissue. It does not represent an elimination gradient for carbon dioxide. Because the normal excised cæca maintain a definite hydrogen ion concentration and change their internal environment toward that as an optimum during life, there exists a regulatory process which is an important vital function.

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