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Radiological impact assessment and dose distribution pattern in gorgan bay, Northern Iran

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Abstract

In this study, the specific activity of radionuclides was measured using a high purity germanium detector (HPGe) and the distribution pattern of radiological parameters and hazard indicators was plotted using Surfer and GIS software. Sediment samples were collected from the Gaz River in the mountains of Golestan province, and the central and southern part of Gorgan Bay. In the samples, the average values of specific activity of 226Ra, 232Th, 40K and 137Cs are 17.61, 35.91, 398.65 and 4.01 Bqkg− 1, respectively. The highest concentration of 40K is in the sediments of the outlet of the Gaz River, which may be due to the use of potassium fertilizers for agricultural activities in this area. The concentration of 137Cs activity in the Bay sediment is higher than other sediments, also due to the high mobility and lightness of 137Cs, higher concentration of this radionuclide is in the quiet parts in the middle of the bay. In Gorgan Bay, the maximum of radiological parameters is in the estuary of Gaz River and in line with the water flow, the maximum level of these parameters tends to northwest. Mean radiological indices such as Raeq, Dose, AEDout, ELCRout and AGDE estimated as 99.67 Bqkg− 1, 45.82 nGy/h, 0.056 mSvy− 1, 0.197 × 10− 3 and 329.72 µSvy− 1, respectively which they were all within the allowable range and not threaten the health of residents.

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Acknowledgements

This work was done with the financial support of the Research Council of Arak University, so the authors are grateful to them.

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  1. Department of Physics, Faculty of Science, Arak University, 38156-88138, Arak, Iran

    Seyed Mohsen, Mortazavi Shahroudi & Reza Pourimani

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  1. Seyed Mohsen
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Correspondence to Reza Pourimani.

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Mohsen, S., Shahroudi, M. & Pourimani, R. Radiological impact assessment and dose distribution pattern in gorgan bay, Northern Iran. J Radioanal Nucl Chem 331, 3449–3459 (2022). https://doi.org/10.1007/s10967-022-08296-z

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