Investigation of Natural Sources Contamination with Arsenic in the Suburbs of Hashtrood City, East Azerbayjan Province

Subject Areas : environmental management

Azita  Behbahaninia ¹ (Assistant Professor Department of Environmental,Islamic Azad University, Rodehen Branch, Iran. * ( Corresponding Author))
Maryam  Farahani ² (- Assistant Professor Department of Environmental, Azad University, Rodehen Branch, Iran.)

Received: 2015-07-16 Accepted : 2015-11-19 Published : 2016-11-21

Keywords: Arsenic, soil, ground waters, Fly ash,

Abstract :

Background and Objective: Soil surface water and ground water contamination with arsenic (As), due to its high potential for food cycle entrance, has high risk for human safety. Evidences of as pollution in Hashtrood, in East Azerbayjan, in the form dermal disorders have been reported. Also, this pollution can lead to decrease of agricultural products in terms of both quality and quantity or some lesions in farm animals. Due to lack of knowledge the reason for this remains unknown, but it may be related to as pollution. This study was conducted to investigate the level of soil and water contamination with As in Hashtrood city.  Method: Based on the obtained information, the surface and ground waters, soil, river sediments, and rock were sampled and analyzed for physico-chemical and as in the laboratory. Results: There are significant differences for mean as contents in the samples and crust. The maximum level of as was observed in fly ash samples. Consequently, as pollution was related to geogenic and volcanic eruptions in this region. According to the results, the mechanisms for As pollution in the region are known to be: As release from rock units, As sorption by oxide minerals in aerobic and acidic to neutral conditions, desorption from oxide surfaces with increase of pH, increase of As concentration in solution, and causing pollution.   

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