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do_theory [31/03/2015 09:58]
pieter created
do_theory [31/03/2015 10:36]
pieter
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 =====Introduction===== =====Introduction=====
  
-Dissolved oxygen probes provide a convenient approach to essentially ​direct measurement of molecular oxygen. The membrane isolates the electrode from the sampleand oxygen is detected as it diffuses across the membrane. The probe can be used to measure any system where oxygen is present. Calibration of the sensor is readily achieved if knowledge of oxygen concentration or solubility at a specific condition is known.+Dissolved oxygen probes provide a convenient approach to an essential ​direct measurement of molecular oxygen. The membrane isolates the electrode from the sample and the oxygen is detected as it diffuses across the membrane. The probe can be used to measure any system where oxygen is present. Calibration of the sensor is readily achieved if the oxygen concentration or solubility at a specific condition is known.
  
 =====Solubilisation of oxygen from the atmosphere into water===== =====Solubilisation of oxygen from the atmosphere into water=====
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 The solubility of oxygen in water is achieved by physical solution which does not involve chemical interaction between the compounds. The solubility equilibrium is a function of the following factors: The solubility of oxygen in water is achieved by physical solution which does not involve chemical interaction between the compounds. The solubility equilibrium is a function of the following factors:
  
-//the concentration of oxygen in the gas phase at the water-atmosphere interface//​ +  * //the concentration of oxygen in the gas phase at the water-atmosphere interface//​ 
- +  ​* ​//the attractive molecular forces between water molecules and oxygen molecules//​ 
-//the attractive molecular forces between water molecules and oxygen molecules//​ +  ​* ​//the kinetic energy of the water and oxygen molecules.//​
- +
-//the kinetic energy of the water and oxygen molecules.//​+
  
 Physical changes in temperature and pressure have a pronounced effect on the solubility factors. Physical changes in temperature and pressure have a pronounced effect on the solubility factors.
do_theory.txt · Last modified: 31/03/2015 10:37 by pieter