What is the sodium acetate used for in the Fluoride in Acid Solutions, Method 8323?

Document ID

Document ID TE8403

Version

Version 2.0

Status

Status Published

Published Date

Published Date 07/24/2018
Question
What is the sodium acetate used for in the Fluoride in Acid Solutions, Method 8323?
Summary
Sodium Acetate in Fluoride Method 8323
Answer
Method 8323 for Fluoride in Acid Solutions includes a sodium acetate solution in the test procedure. In acidic solutions, the Fluoride Ionic Strength Adjustor (ISA) may not be strong enough to adjust the pH and ionic strength, so the sodium acetate is used in conjunction with the ISA to ensure that the correct pH and ionic strength of the sample is reached. Sodium acetate is not available from Hach.

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