Iodometry is a quantitative analytical method used to determine the concentration of certain substances, particularly oxidizing agents, in a solution. This technique involves the use of iodine, which reacts with the analyte to form a colored complex. The endpoint of the reaction is typically indicated by a color change, allowing for precise measurement. In iodometric titrations, a known concentration of iodine solution is added to the sample until the reaction is complete. The amount of iodine consumed is then used to calculate the concentration of the target substance. This method is widely used in various fields, including chemistry and environmental science.