scholarly journals Determination of Henry’s constant, the dissociation constant, and the buffer capacity of the bicarbonate system in ruminal fluid

2016 ◽  
Vol 99 (1) ◽  
pp. 369-385 ◽  
Author(s):  
Katharina T. Hille ◽  
Stefan K. Hetz ◽  
Julia Rosendahl ◽  
Hannah-Sophie Braun ◽  
Robert Pieper ◽  
...  
Keyword(s):  
Dissociation Constant ◽  
Buffer Capacity ◽  
Henry's Constant ◽  
Ruminal Fluid

Effect of induced metabolic acidosis on intracellular pH, buffer capacity and contraction force of human skeletal muscle

1985 ◽  
Vol 69 (5) ◽  
pp. 505-510 ◽  
Author(s):  
E. Hultman ◽  
S. Del Canale ◽  
H. Sjöholm
Keyword(s):  
Buffer Capacity ◽  
Recovery Period ◽  
Mean Values ◽  
Muscle Ph ◽  
Before And After ◽  
Ph Buffer ◽  
Total Capacity ◽  
Ph Decrease ◽  
Muscle Biopsies

1. Five volunteers were studied before and after oral administration of NH4Cl (0.3 g/kg body wt.) given in order to create a moderate acidosis. 2. The quadriceps femoris muscles were stimulated electrically for 75 s and muscle biopsies for determination of pH and metabolite content were taken before, at the end of contraction and after 10 min in the recovery period. 3. Muscle pH at rest (mean 7.04) was not significantly decreased after acidification despite an extracellular pH decrease of 0.15 unit. 4. After contraction muscle pH was significantly lower after NH4Cl. Mean values before and after acidification were 6.70 and 6.54 respectively. 5. The buffer capacity calculated as the total capacity of the muscle to buffer H+ produced during the isometric contraction before and after NH4Cl ingestion was reduced from 68.6 sl to 54.5 sl. 6. The force produced by contracting muscle was significantly lower at the end of the contraction period after NH4Cl ingestion, 44.6% of initial compared with 55.4% without NH4Cl.

Determination of dissociation constant of phosphinate group in phosphinic pseudopeptides by capillary zone electrophoresis

2002 ◽  
Vol 770 (1-2) ◽  
pp. 145-154 ◽  
Author(s):  
Dušan Koval ◽  
Václav Kašička ◽  
Jiřı́ Jiráček ◽  
Michaela Collinsová ◽  
Timothy A. Garrow
Keyword(s):  
Dissociation Constant ◽  
Capillary Zone Electrophoresis ◽  
Zone Electrophoresis ◽  
Capillary Zone
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