DISINFECTION BY-PRODUCTS IN SWIMMING POOL WATER: PRECURSORS AND CHEMICAL REACTIONS OF NCI3 FORMATION

摘要

Swimming in chlorinated pool water and, thus, exposure to DBPs has been linked to adverse health effects. An increased risk of bladder cancer and adverse effects on the respiratory tract have to be mentioned in this context. Swimming in chlorinated pool water has been associated with respiratory complaints, an increase in lung epithelium permeability and risk of developing asthma. A study found an association between baby swimming and recurrent respiratory tract and ear infections. Often trichloramine (NCI3) - a volatile and irritating compound - has been proposed as the reason for eye and upper respiratory tract irritation and as a possible cause of occupational asthma in a study with two lifeguards and a swimming teacher. Recent measurements showed NCI3 concentration in the air of indoor swimming pools to occur in a wide range from 0.2 to 18.8 mg/m~3 . Therefore, there is an increased interest in understanding the prevailing precursors, the formation and fate of NCI3 in swimming pool water. Measures to reduce or prevent NCI3 exposure of bathers have to decrease the amount of precursor compounds and/or impede the corresponding reactions.