Document Type : Original Research Paper
Authors
1 Ph.D. Student, Faculty of Earth Sciences, Kharazmi University, Tehran, Iran
2 Associate Professor, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran
3 Professor, Faculty of Earth Sciences, Shahid Chamran University, Ahvaz, Iran
Abstract
Considerable quantities of wastes are generated in drilling operation contain various components such as heavy metals and hydrocarbons. These wastes are discharged in pits or the sea, which their geochemical composition should be investigated for waste management. In this study, sampling of heavy water based mud additives; different lithology of the Gachsaran formation and soils around location was performed. After preparation, metal concentrations in samples were determined by ICP-MS method. The results showed that the concentration of metals such as lead, copper, arsenic, zinc, molybdenum, antimony, mercury, and strontium in the Gachsaran wastes are more than standards and soils of the region. In addition, the calculated correlation coefficients between elements in wastes showed that possible mineral phases as impurities associated with barite. The environmental assessments also suggested that these wastes are extremely polluted for Ag, Sb, As, Cu, Pb. Using pure barite could reduce the amounts of the heavy metals.
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