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Determination of total organic carbon in waste water by ultraviolet oxidation technology (CAT#: STEM-PPA-0138-LJX)

Introduction

Carbon is the common component of all organic matter and the main element of organic matter. The higher the TOC value of water, the higher the content of organic matter in water. Therefore, TOC can be used as an indicator to evaluate organic pollution of water quality. <br />Direct discharge of waste water in industry and production will pollute the environment and cause harm to human health. The pollution degree can be judged by measuring the content of total organic carbon in waste water.




Principle

The principle of ultraviolet oxidation method is as follows: Using ultraviolet light to illuminate the water sample to be tested, the water will decompose into hydroxyl and hydrogen groups. The hydroxyl group combines with the oxide to produce CO2 and water, and the total organic carbon content is calculated by measuring the newly generated CO2. When using ultraviolet oxidation method, the oxidation capacity can be improved by adding titanium dioxide, persulfate, etc. The advantage of ultraviolet oxidation method is high oxidation efficiency and simple maintenance, but the disadvantage is that the UV lamp needs to be replaced regularly.

Applications

For the determination of total organic carbon in liquids

Procedure

1. Ultraviolet light illuminates the water sample
2. The water sample is oxidized to produce CO2 and water
3. CO2 content was determined by infrared absorption method
4. Calculate the total organic carbon in the water sample by CO2 content

Materials

• Sample Type:
Waste water

Notes

UV lamps need to be replaced regularly.