Sulfite

The detection of sulfite is common in industrial water treatment, e.g. boiler water: Boiler water.

Sulfite is used in industry in various applications, such as

As a bleaching agent in paper production
For the removal of chlorine from waste water
As a preservative and antioxidant in the food industry
In the textile industry to remove residual chlorine from fibers and fabrics
For disinfection and sterilization in the pharmaceutical and cosmetics industries
Sulfite is very often used as an oxygen binder in steam boiler systems.

However, sulfite can be toxic in high concentrations and have negative effects on the environment, especially if it gets into water and wastewater. For this reason, there are strictly regulated limits for the sulphite content in waste water and in some industrial applications.

Sulfite can be toxic in high concentrations and have negative effects on the environment, especially in water and wastewater.
It is important to monitor the sulphite content in wastewater and industrial waste to ensure compliance with environmental regulations.
In the food industry, the sulphite content in some products is monitored to ensure that the permitted limits for preservatives and antioxidants are adhered to.