Giti Firouzi; Mohammad Yazdi; Pedram Navy; Aida Bayati
Volume 12, Issue 3 , October 2014
Abstract
Bandar Abbas, Hormozgan province has an area with numerous hot springs.The Springsis located in FoldedZagros geological zone, and the host rocks of the springs are Cretaceous to Miocene limestones. Water samples from four hot springs and one cold spring were collected in two times, April (wet condition) ...
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Bandar Abbas, Hormozgan province has an area with numerous hot springs.The Springsis located in FoldedZagros geological zone, and the host rocks of the springs are Cretaceous to Miocene limestones. Water samples from four hot springs and one cold spring were collected in two times, April (wet condition) and September (dry condition) 2013, In order to evaluate their environmental geochemistry. Temperature, pH, Eh and electrical conductivity (EC) were measured on site. Major and trace elements were analyzed by ICP-OES method. Also, elements such as Hg, As, Bi and Sb were measured by using atomic fluorescence method at detection limit of ppb. Trace elements are relatively high from environmental standards. Concentrations of U, Th and REE in springs water is high. Hydro geochemical studies indicate that high concentration of chloride in the water springs. The hydro chemical facies of hot and cold springs are NaCl and H2S gas boiling type. Genesis of the thermal springs indicate that these springs was derived from an ancient hydrothermal\source and high concentrations of chloride, indicating the high depth of the source.
Seyed Javad Moghaddasi,; Pedram Navi; Marzyeh Rezaei Abdoli
Volume 11, Issue 3 , October 2013
Abstract
In this study, thermal springs from central region of Mazandaran province including Ab-e Ask, Larijan, Astarabaku and Lavij (Moosavi-e Lavij and Fil-e Lavij) were evaluated environmentally. Although the studied thermal waters are used directly or indirectly for treatment purposes, the high concentration ...
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In this study, thermal springs from central region of Mazandaran province including Ab-e Ask, Larijan, Astarabaku and Lavij (Moosavi-e Lavij and Fil-e Lavij) were evaluated environmentally. Although the studied thermal waters are used directly or indirectly for treatment purposes, the high concentration of some trace elements can be harmful to human health and environment. In this study, general characteristics of thermal waters as well as As, Cd, Cr, Pb, Ni, Cu, Mg, Zn, Mo, V and Co concentrations in thermal waters and surrounding soils and rocks were measured and their environmental significances were evaluated. As a result, it was revealed that As concentration in water and soil of the studied region was more than the upper limits recommended by the World Health Organization (WHO). In all water samples except for Larijan spring, Pb content was more than allowed levels recommended by WHO. Concentration of other trace elements in thermal springs was less than the upper limits recommended by WHO, consequently they had not harmful environmental impact. As content of soil samples around the Ab-e Ask, Astarabaku and Larijan springs were less than the allowed levels, but was higher than allowed limits in Ab-e Ask travertine. Concentration of other trace elements in studied soil samples was lower than allowed levels recommended by WHO.
Mohammad Yazdi; Raana Esmailpur; Pedram Navi; Ahmad Khakzad
Volume 8, Issue 1 , October 2010
Abstract
Lavij coal deposit is situated at a distance of 48km to the southwest of Amol in the Central Alborz coalfield in the North of Iran. Lavij coal-bearing strata in the central Alborz zone are found within rocks of the Upper Triassic-Lower Jurassic era. The coal-bearing sediments in this area belong to the ...
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Lavij coal deposit is situated at a distance of 48km to the southwest of Amol in the Central Alborz coalfield in the North of Iran. Lavij coal-bearing strata in the central Alborz zone are found within rocks of the Upper Triassic-Lower Jurassic era. The coal-bearing sediments in this area belong to the Shemshak Formation (Upper Triassic-Lower Jurassic). This formation mainly consists of sandstone, shale, calcareous sandstone, argillite and siltstone. Several coal seams with different thicknesses are interbedded with sediments. The ecosystem, landscape and biodiversity of the area have all been affected by coal mining activities during the last few years. The environmental impacts of this mining can be studied from different viewpoints, but the research presented here concerns the geochemical environmental impacts. The surface and ground water of the Lavij area seem to have been polluted during the mining, natural erosion and dissolution of maceral and minerals of the coals of Lavij area. The present paper deals with geochemical environmental impacts of these coals and 14 samples were analyzed from surface and ground water of the Lavij area. The samples were analyzed by ICP-OES for As, Ba, Be, Cd, Co, Cr, Cu, Eu, Ga, Ge, La, Li, Mo, Pb, Mn, Zn, S, Nd, Ni, P, Sc, Sn, Sr, V, Y and Yb. Data processing showed the pollution in the water and soil of the area is very low.
