How can Total Inorganic Carbon (TIC) be measured?

Dokument-ID

Dokument-ID TE104

Veröffentlichungsdatum

Veröffentlichungsdatum 25.05.2022
Frage
How can Total Inorganic Carbon (TIC) be measured?
Zusammenfassung
Measuring Total Inorganic Carbon (TIC) using an alkalinity method
Antwort
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, Phenolphthalein and Total Alkalinity Method 8203, Digital Titrator_DOC316.53.01166
Alkalinity, Buret Titration Method 8221_DOC316.53.01151

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