Real-Time Measurements of Gas-Phase Trichloramine (NCl) in an Indoor Aquatic Center.

NCl is formed as a disinfection byproduct in chlorinated swimming pools and can partition between the liquid and gas phases. Exposure to gas-phase NCl has been linked to asthma and can irritate the eyes and respiratory airways, thereby affecting the health and athletic performance of swimmers. This study involved an investigation of the spatiotemporal dynamics of gas-phase NCl in an aquatic center during a collegiate swim meet.