What method is commonly used to analyze chlorine concentrations in water samples?

Amperometric titration is commonly used to analyze chlorine concentrations in water samples due to its ability to provide precise measurements of chlorine levels. This method involves adding a reagent to the water sample that reacts with chlorine, and as this reaction occurs, an electric current is measured. The amount of current generated is directly related to the concentration of chlorine present, allowing for accurate quantification.

This technique is favored for water analysis because it can detect low concentrations of chlorine efficiently and has a relatively straightforward procedure, making it suitable for routine analysis in laboratories. The use of amperometric titration also allows for real-time monitoring and is compatible with various sample matrices, which is essential in ensuring the safety and quality of drinking water.