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| Titel |
Investigations Of The Source Of Arsenic In Groundwater Around The Ayvacik District (Canakkale-Turkey) |
| VerfasserIn |
Ozan Deniz, Alper Baba, Nur Aslı Erdin |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250100035
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| Publikation (Nr.) |
 EGU/EGU2014-15913.pdf |
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| Zusammenfassung |
| The main goal of this study is to investigate the source of arsenic problem in groundwater in
the Ayvacik (Çanakkale) district, of Biga Peninsula, NW Turkey. For this purpose,
hydrogeological and hydrogeochemical measurements were conducted at the selected
locations of water sampling. Our field measurement results suggest that the water samples in
the region is generally neutral and alkaline chemistry. Electrical conductivity, temperature
and Eh values are of (327) – (1126) μS/cm, (17.4) – (28.2) and (-8) – (-62) mv,
respectively.
As well as this, we carried out laboratory analysis for the collected water samples to
further investigate their chemistry in detail. Major ions in groundwater contain Ca and HCO3.
High Ca and Mg values are related to Na and K ion-exchange reactions in water. Arsenic
types in groundwater are in the form of arsenic acid (H3AsO3) where high concentrations of
arsenic values are found in groundwater. These arsenic values exceed The World Health
Organization (WHO) and Turkish Standards Institute (TS266 - Water intended for human
consumption) limits (10 ppb).
Alterations and fracture zones are common in some parts of the Miocene Volcanics in the
study area. The circulation of cold water in the underground is closely related to major
fractured zones. We think that the source of high arsenic values in the groundwater is
connected with alteration zones in this volcanics according to field data and results of
chemical analysis.
Keywords: Arsenic, Groundwater, WHO, TS266, Ayvacik-Canakkale |
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