Assessment of natural radioactivity levels and radiation hazards in soil samples from selected districts of Garmian zone, Sulaymaniyah city, Kurdistan region, Iraq (Oil & Gas Block)
摘要
This research investigates the natural radioactivity level associated with radiation hazards in soil samples, which are collected from different districts in Garmian zone, Sulaymaniyah City, Kurdistan region, Iraq. Also, the Garmian zone contains many important points including tourist positions, many human living districts, and an oil and gas block. The determination of the natural radioactivity level is important to environmental monitoring and assessment of public health. The collection of soil samples includes (41) samples in (27) districts, in which is HPGe detector was used to determine the naturally occurring radionuclides concentration such as 226Ra, 232Th, and 40K. The results define that the activity concentrations vary per each different district, with a maximum of (196.6 Bq/kg) in Tovga Village and a minimum of (80.5 Bq/kg) in the Mahmoudia Village for radium equivalent activity, and the hazard indices include the way above the normal range in Tovga village and Bani Khelan town in both indoor and outdoor hazard indices, also excess lifetime cancer risks in outdoor and indoor are high with maximum (390 cases per million people per lifetime) in outdoor and maximum (3030 cases per million people per lifetime) in indoor. This study furnishes valuable baseline information about environmental management and understanding better of natural radioactivity in that geologically and industrially important zone of Iraq.