Source Study of Water Pollution to Fluorine in Ahar Town Villages, East Azarbayjan Province

Higher contents of standard limits of F element in drinking water of Galandar village of Ahar town in East Azarbayjan was reported by health center and people of this village. This study was conducted to evaluate water pollution (and probability soil pollution) to F and probable source of this pollution. For this purpose، from water، soil، and rock of the watershed were sampled and EC، temperature، pH parameters of water were measured in field. Cations and anions analyses and F contents of water، soil، and rock samples were carried out in lab. Also، microscopic sections of rocks were prepared and this samples measured by XRF method. Results showed water type in low-changed and lime was bicarbonate-calcite، in Galandar village with high-changed، sodium-sulphate، and in other samples were sulphate-calcite. Comparing of obtained results with Iran، WHO، and EPA drinking water standards showed F and sulfate ions were higher than permissible limit in some water samples. Diagrams of elements concentrations Fluctuations in water samples، showed high correlation between F، bicarbonate، and Na ions. Appearance of F contain minerals in Biotite، Hornblende، and Apatite minerals in microscopic sections، high contents of F in XRF results، and normative composition of the rock samples، correspond water pollution source of F to metamorphic rocks of this region. Therefore، with high geologic changes in the rocks، pollution potential of this region is high. F contents in the soil samples، showed lower than permissible limit of this element content.