Caption: Burning trichloroisocyanuric acid released clouds of chlorine gas and nitrogen trichloride
that swept into East Vancouver and the neighbouring municipalities of Burnaby and Coquitlam.
Chloroform will off-gas from a swimming pool surface, but the salient compound of interest is nitrogen trichloride
Key words: aeroallergens, atopy, childhood asthma, chlorine, exercise-induced asthma, exhaled nitric oxide, nitrogen trichloride
, swimming pool, total IgE, trichloramine.
Of these by-products, probably the most toxic to the respiratory tract is nitrogen trichloride
or trichloramine, the gas which gives indoor swimming pools their typical smell and which is released in pool air when chlorine-based disinfectants destroy organic matter brought by swimmers.
The removal of chloramines / trihalomethanes-chloroform / nitrogen trichloride
is the greatest fiduciary responsibility that a pool operator has next to bacteriological cross infection.
When chlorine reacts with organic matter, such as urine or sweat, several by-products are produced including nitrogen trichloride
- a powerful irritant.
The problem is caused by by-products of chlorine, trichloramine or nitrogen trichloride