Does Hach have a procedure for measuring carbonates and bicarbonates?

Document ID

Document ID TE1372

Version

Version 6.0

Status

Status Published

Published Date

Published Date 01/24/2019
Question
Does Hach have a procedure for measuring carbonates and bicarbonates?
Summary
Carbonate and Bicarbonate from alkalinity
Answer
Carbonates and bicarbonates can be determined by performing an alkalinity test. Alkalinity of water is due primarily to the presence of bicarbonate, carbonate, and hydroxide ions. Carbonate ions (CO 3 2-) are able to react with and neutralize 2 hydrogen ions (H+) and the bicarbonate ions (HCO 3 -) are able to neutralize hydrogen ions (H+) or hydroxide ions (OH-) present in water.

Carbonate concentration can be estimated by the phenolphthalein and total alkalinity measurements and use of the "Alkalinity Relationship Table" located in the Alkalinity, Phenolphthalein and Total Alkalinity Method 8203.

How do the alkalinity methods measure hydroxides, carbonates, and bicarbonates? will provide additional information on how carbonates are measured and will provide the Alkalinity relationship table mentioned above.
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