# Question #56968

Jun 24, 2017

Here is a common method.

#### Explanation:

There are three parts to organic content analysis:

Preparation

• Acidify to convert inorganic carbon to ${\text{CO}}_{2}$
• Bubble an inert gas through the water to remove the ${\text{CO}}_{2}$
• Filter through a 0.45 µm filter to remove suspended solids

Oxidation

• Oxidize organic carbon to ${\text{CO}}_{2}$ with persulfate in a UV-irradiated chamber

Analysis

• Measure the IR absorption of the $\text{CO"_2}$
• Report the organic carbon as mg/L or ppm TOC.