Free chloride determination

Determination of Free Chloride
Determination of Free Chloride

Water is chlorinated to prevent water-borne diseases. Under normal temperature and pressure, chlorine is yellowish green. Chlorine, a gas heavier than air, is an active element and interacts with all substances in aqueous environments.

When people say chlorine, they understand the chemicals used by women for bleaching the laundry, which are generally used for disinfection in swimming pools, drinking water and cleaning processes. However, chlorine, chloride and hypochlorite are different chemicals used in water technique. Chloride is the name given to the chlorine substance in the water as an ion. Chloride is also present in the salt spirit (hydrochloric acid) used for cleaning purposes in industrial plants and households. Hypochlorite, on the other hand, is used for disinfection and laundry bleaching. When chlorine gas is dissolved in water, hypochlorite ion is obtained. Sodium hypochlorite is the chemical used in households as pine juice. However, since it is used in homes, its concentration is low.

Under natural conditions, chlorine ion is not present in water and is added to water by humans. This chlorine ion can be measured. The value obtained as a result of the measurement is called the amount of free chlorine. During disinfection, the chlorine ion releases the oxygen in it, thus reducing the amount of free chlorine or completely disappearing. Free chlorine is also called active chlorine. In other words, the free residual chlorine is the amount of chlorine remaining in the water after disinfection and protecting the water from subsequent contamination.

Disinfection studies are carried out with the aim of removing various microorganisms that cause disease in drinking and usage water and treatment water. Various methods are applied for disinfection.

 

The laboratories, which are authorized by national and international accreditation bodies, also carry out free chloride measurements within the scope of water and wastewater measurements. Laboratories operate in accordance with TS EN ISO / IEC 17025 standard.