“…Some studies revealed that chlorination of water containing DMA, methylethylamine, diethylamine and diphenylamine in the presence of ammonia ions results in the formation of NDMA, NMEA, NDEA and NDPhA, respectively (Choi et al, 2002;Andrzejewski et al, 2005;Zhou et al, 2009). These findings indicate that most nitrosamines are usually formed by nitrosation or oxidation of amine precursors in the process of disinfection.…”