The iodometric method is a variation of which method for dissolved oxygen determination?

The iodometric method is a variation of which method for dissolved oxygen determination?

• A. Modified Winkler Method
• B. Standard Winkler Method
• C. Iodometric Method
• D. Mohr Method

Answer: (A)

Dissolved oxygen is measured by fixing it in a form that can be titrated, producing iodine proportionally to the amount of oxygen present. The iodometric method uses iodometry to quantify that iodine, which makes it a variant of the Winkler approach. In practice, this iodometric version is commonly implemented as the Modified Winkler Method, where tweaks to reagents and handling reduce interference and improve accuracy. That’s why the iodometric method is described as a variation of the Modified Winkler Method rather than a separate standard procedure or unrelated method. The Mohr method is for silver nitrate titration of chlorides, which isn’t relevant here, and the standard Winkler is the base procedure without specifying the iodometric modification.

Dissolved oxygen is measured by fixing it in a form that can be titrated, producing iodine proportionally to the amount of oxygen present. The iodometric method uses iodometry to quantify that iodine, which makes it a variant of the Winkler approach. In practice, this iodometric version is commonly implemented as the Modified Winkler Method, where tweaks to reagents and handling reduce interference and improve accuracy. That’s why the iodometric method is described as a variation of the Modified Winkler Method rather than a separate standard procedure or unrelated method. The Mohr method is for silver nitrate titration of chlorides, which isn’t relevant here, and the standard Winkler is the base procedure without specifying the iodometric modification.