There has been an increasing extent of contamination of soils with heavy metals since the beginning of industrialization and urbanization development, which have been brought about serious threats to various ecosystems, surface water, groundwater, food security, and human health (1). Due to the potential effects of heavy metals on human health and their long-term sustainability, food production in contaminated areas is a concern. Heavy metals can cause soil and A-R-T-I-C-L-EI-N-F-O A-B-S-T-R-A-C-T

http://jhygiene.muq.ac.ir/article-1-418-en.pdf

Potential Health Risk of Heavy Metals Accumulation in Cultivated Mulberry in Urban Landscapes of Arak, Iran: A Case Study

Zoning of some physicochemical parameters in the sediments of Meighan wetland in Iran: response to urbanization, industrial, and agricultural activities

Introduction: There are natural and artificial radioactive nuclei in our environment, as well as in the structure of the living organism. Currently, industrial and municipal pollution has also an impact on increasing the level of radiation. The present study investigated the effect of inlet water from Arak Wastewater Treatment Plant on international Meighan Wetland and assessed the radiological indicators of sediments and water samples in this area. Material and Methods: In this study, the specific activity of radionuclides in water and sediment samples taken from the water entry areas of the international Meighan wetland was determined using a high purity germanium detector (Baltic Scientific Instrument LTD, 005- Latvia). Radiological indices for collected samples were calculated, and the topographical maps of radiation dose distribution were plotted using Surfer software (version 13). Results: Specific activities of 226Ra, 232Th, 40K, and 137Cs in sediment samples were in the range of 14.44-26.58, 22.78-34.56, 360.84-447.79, and 0.7-13.03 , respectively.  The average values ​​of the external hazard index for sediment samples were calculated at 0.25. Conclusion: According to the obtained results, it can be concluded that pollution is more embedded in the Treatment Plant's basin, and a small amount goes to the wetlands. Radioactivity in the research area is normal, and topographic maps show that the distance from the entrance reduces the activity of radium and increases the activity of cesium. Assessment of hazard indicators showed that radiation levels in this area are not dangerous to human health.

http://ijmp.mums.ac.ir/article_13262_d1140d86c214ac02ed0dd2239bef5d70.pdf

Hasan Khalili

Papers

Radiological Hazard Assessment of Radionuclides in Sediment and Water Samples of International Meighan Wetland in Arak, Iran