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Drinking water quality in small water supply system regarding to arsenic concentration in district of Northern Backa [Serbia]
2006
Jovanic, S. (Zavod za zastitu zdravlja Subotica, Subotica (Serbia)), E-mail: sale@eunet.yu | Stanic, A. (Zavod za zastitu zdravlja Subotica, Subotica (Serbia)), E-mail: sale@eunet.yu
Determination of total arsenic and As(III) was performed in untreated and treated water samples collected in some small water supply systems in Northern Backa district (Serbia). Concentration of total arsenic in treated water was between 71 and 115% of total arsenic in untreated water (0.001-0.168 mg As/cubic dm). In untreated water concentration of As(III) was between is less than 0.001 and 0.078 mg As/cubic dm. However, during the water treatment (chlorination process) As (III) concentration decreased significantly to the level of 1 to 2% of start concentration in untreated water. Influence of conservation water sample with HCl increased with consumption of KMnO4 on determination of As(III).
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