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Speciation and Kinetics of Trihalomethane Formation in Drinking Water in Mexico
Author(s) -
Garrido Sofía E.,
Fonseca M. Guadalupe
Publication year - 2010
Publication title -
groundwater monitoring and remediation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 47
eISSN - 1745-6592
pISSN - 1069-3629
DOI - 10.1111/j.1745-6592.2009.01256.x
Subject(s) - trihalomethane , bromoform , chemistry , environmental chemistry , chlorine , genetic algorithm , water treatment , natural organic matter , kinetics , organic matter , chloroform , environmental science , environmental engineering , chromatography , ecology , organic chemistry , physics , quantum mechanics , biology
Water chlorination continues to be one of the most common water disinfection processes, especially in developing countries. When natural organic matter (NOM) is present, the process produces disinfection by‐products (DBPs), some of them being trihalomethanes (THMs). This study determined the presence, speciation, and kinetics of THMs formation in the water supply for the northern area of the city of Toluca, Mexico. The results show that the concentrations of THMs are below the maximum allowable limits of 200 μg/L in accordance with NOM‐127‐SSA1‐1994. Regarding THMs speciation, the presence of chloroform was more frequently observed in domestic water; furthermore, in one sample in which bromoform was present, it dominated over the chlorine species. Regarding the kinetics of THMs formation, a maximum concentration of THMs (THMs Max ) of 13.02 μg/L was obtained, and the time required to reach 50% THMs Max ( t 50 ) was 39.45 min.