How can Total Inorganic Carbon (TIC) be measured?

ID de documento

ID de documento TE104

Fecha de publicación

Fecha de publicación 08/01/2019
Pregunta
How can Total Inorganic Carbon (TIC) be measured?
Resumen
Measuring Total Inorganic Carbon (TIC) using an alkalinity method
Respuesta
Total Inorganic Carbon (TIC) is the sum of inorganic carbon species in a solution. The inorganic species include: carbon dioxide, carbonic acid, bicarbonate anion, and carbonate. The concentration of the different species depends on the pH of the solution (Bjerrum plot).

TIC is typically measured using infrared spectroscopy; however, if the dominant species is carbonate, the alkalinity titration methods can be used as an approximation. See the Water Analysis Handbook (WAH) alkalinity titration methods and, "Alkalinity Relationship" table.

Alkalinity, Phenopthalein and Total Method 8203
Alkalinity, Phenopthalein and Total Method 8221 BT

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