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Baghban M.,Tehran Province Water and Wastewater Research Group | Moshiri A.,Tehran Province Water and Wastewater Research Group | Baghahi S.M.,Tehran Province Water and Wastewater Research Group | Beigi A.A.M.,Research Institute of Petroleum Industry RIPI
Asian Journal of Chemistry | Year: 2013

In chlorination process for water disinfection, besides on inactivation pathogens, chlorine reacts with natural organic compounds that present in water and lead to the formation of chlorinated byproducts such as chloroacetic acids. In this research, effective factors in formation of compounds of halo acetic acids via propanone chlorination reaction were studied. The studied factors were concentration of organic compounds, chlorine dose and pH of sample. The tests results showed that these factors significantly affect on type and amount of chloroacetic acids. The increasing of propanone's concentration and chlorine dose cause an increase in all three types of compounds of halo acetic acids. While, decreasing of pH, leads to increasing of chloroacetic acid concentrations. Identification and determination of halo acetic acids performed with GC instrument and electron capture detector (ECD). The inherent advantages of GC-ECD were highly selective and good resolution toward halo acetic acids, so that the method was ideally suited for trace determination of chloroacetic acids in the investigated urban water samples. In order to evaluation of effective factors on formation of halo acetic acids, resulted from chlorination of organic compounds in urban water resources, several samples were monitored for parameters such as temperature, free residual chlorine, total organic halo acetic acids and pH of Karaj river, chlorinated water from Bilaghan lake, inlet and outlet of Jalalieh water treatment plant. © 2013 Asian Journal of Chemistry.


Baghban M.,Tehran Province Water and Wastewater Research Group | Baghahi S.M.,Tehran Province Water and Wastewater Research Group | Damercheli F.,Iran Mineral Processing Research Center | Miran Beigi A.A.,Research Institute of Petroleum Industry RIPI
Asian Journal of Chemistry | Year: 2014

Polycyclic aromatic hydrocarbons are a main group of organic compounds that their monitoring in water recourses is very important because of their side effects such as carcinogenic, genetic and systematic effects on human health. Sources of water pollution with polycyclic aromatic hydrocarbons are oil industries, oil leakage from storage tanks and oil transferring pipe lines, using of fossil fuels, industrial wastewater's disposal, burning and ash of wastes, etc . Due to ecological and environmental importance and also vast spreading of the pollutant resources in many districts of Iran including, monitoring of pollutants is necessary especially in Tehran province in order to ensure the health of water resources. In this study, 16 compounds of polycyclic aromatic hydrocarbons which are listed as potentially-carcinogen agents for human by the United States Environmental Protection Agency (EPA) were determined by gas chromatography-mass spectrometry. The instrument was calibrated in a selected ion monitoring mode (SIM mode) and it was equipped to a 30 m capillary column. In this research five water effluents including Jalalieh, Kan, Tehranpars 1, Tehranpars 2 and Sohanak water treatment plants with several water storage tanks (related to Tehran province water distribution) were studied. The samples were extracted from liquid phase and analyzed by injection to a GC-MS system (Agilent 6890N). The mass spectra indicate that the concentrations of these 16 polycyclic aromatic hydrocarbons compounds are lower than permitted limits of Iranian National Standard (standard number 1053 for drinking water), World Health Organization (WHO) and US.EPA recommendations. © 2014, Chemical Publishing Co. All rights reserved.

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