In many application fields, chlorine-containing disinfectants are widely used to kill bacteria, viruses and other microorganisms to ensure environmental hygiene and safety. However, it is very important to monitor the concentration of chlorine-containing disinfectants, because too low a concentration may have poor disinfection effect, while too high a concentration may cause harm to human body and the environment.
Functions and types of chlorine-containing disinfectants: chlorine-containing disinfectants are a kind of chemical substances that can release active chlorine, such as sodium hypochlorite (bleaching powder), sodium chloride solution (household bleaching solution) and trichloroisocyanuric acid. These disinfectants can kill germs and microorganisms and are used in water treatment, medical instrument disinfection, food processing and other fields.
Importance of concentration monitoring: The correct disinfection effect depends on the concentration of disinfectant. If the concentration is too low, the disinfection effect may not be ideal and bacteria cannot be effectively killed. However, if the concentration is too high, it may produce harmful gases and residues, which will do harm to human body and environment. Therefore, concentration monitoring is very important to ensure disinfection effect and human safety.
Concentration monitoring method:
Kit method: This is a simple concentration monitoring method. By adding chemical reagents to the kit, the concentration of chlorine-containing disinfectant can be judged according to the color change.
Electrochemical method: Electrochemical sensor can measure the current change in chlorine-containing disinfectant, thus indirectly obtaining the concentration information.
Spectrophotometry: This method measures the concentration of chlorine-containing disinfectant by measuring the intensity change of absorbed light or transmitted light.
Chemical analysis methods: Chemical analysis methods such as titration and spectrophotometry can accurately determine the concentration of chlorine-containing disinfectant.
Monitoring frequency and control: when using chlorine-containing disinfectants, the concentration should be monitored regularly to ensure that it is within the appropriate range. The monitoring frequency can be determined according to the purpose and demand. For example, in the field of water treatment, there is usually more frequent monitoring.
Safety precautions: When monitoring the concentration, you must abide by the safety operation specifications. For high-concentration chlorine-containing disinfectants, it may be necessary to wear appropriate personal protective equipment to avoid direct contact. At the same time, the concentration monitoring equipment also needs to be calibrated and maintained frequently to ensure accuracy.