Miscellaneous Method Do and TOC


Do meter 

When electrode Deep insolution ( electrod chemical cell ) 

  • Migration current
  • Convection current
  • Diffusion current  

TOC - Total Organic Carbon 

TOC = DOC ( DISSOLVE ORGANIC CARBON ) + NDOC ( NON DISSOLVE ORGANIC CARBON ) 

TOC = TC ( TOTAL CARBON ) - TIC ( TOTAL INORGANIC CARBON ) 

TOC = VOC / PC VOLATILE ORGANIC CARBON/ PURGABLE CARBON - NPOC ( NON PURGABLE ORGANIC CARBON ) ( NON EVAPORATED CARBON) 

TOC is the amount of carbon found in organic compounds. 

TOC is measurement find total organic carbon present in wastewater. 

Complete information the present total organic carbon in TOC experiment. 

Also effect on biodegradable and non biodegradable. 

Phosphoric acid are used ( CO2 )


Methods for TOC


  1. NDIR ( Infrared Not Dispersive Spectroscopy ) 
  2. Conductivity
  3. Titration Are Used ( volumetric method, tds method )
  4. Caloriematric
  5. CO2 Electro 
  6. Flame Ionization 
  • NDIR method / combustion 

NDIR method / combustion


Oxidation of total carbon :

  • Combustion
  • Per sulfate oxidation
  • UV oxidation 

React with phosphoric acid in inorganic carbon generated CO2. 

Important Questions from Mam :  

  1. Three highlights significance of total organic carbon.
  2. Difference between TOC, BOD , COD
  3. Give classification different types of organic carbon
  4. Explain principle of measurement of TOC by TOC analyser.
  5. List the method used to measure CO2 in TOC analyser briefly explain them
  6. With help of net sketch explain combustion and NDIR method used in TOC analyser.