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Study on Probable Radionuclide Contents and Their Dose Assessment in Sand, Soil and Water Samples Collected from The Rupsha River, Khulna

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dc.contributor.advisor Sultana, Prof. Dr. Jolly
dc.contributor.author Islam, Tuhina
dc.date.accessioned 2018-05-22T05:25:59Z
dc.date.available 2018-05-22T05:25:59Z
dc.date.copyright 2016
dc.date.issued 2016-04
dc.identifier.other ID 1555502
dc.identifier.uri http://hdl.handle.net/20.500.12228/153
dc.description This thesis is submitted to the Department of Physics, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Science in Physics, April 2016. en_US
dc.description Cataloged from PDF Version of Thesis.
dc.description Includes bibliographical references (pages 101-108).
dc.description.abstract The radionuclide contents and their activity concentrations in soil, sediment and water samples collected from in and around of Rupsha River, Khulna, Bangladesh have been determined by using a High Resolution Germanium detector (HPGe) of 20% relative efficiency. A total of 44 samples of three categories were collected and analyzed. The activity concentrations of 226Ra, 232Th and 40K in the soil samples of the Rupsha River side area have been found to be varied from 42.99 ± 8.60 to 53.92 ± 7.86 BqKg-1, 64.90 ± 6.60 to 94.16 ± 6.74 BqKg-1 and 581.02 ± 77.66 to 1098.50 ± 124.90 BqKg-1 respectively with an average value of 50.16 ± 7.20 BqKg-1, 77.23 ±7.43 BqKg-1 and 864.63 ± 101.69 BqKg-1 respectively. For sediment samples the activity concentrations of the corresponding radionuclides ranged between 40.86 ± 4.31 to 58.27 ± 5.23 BqKg-1, 57.60 ± 6.84 to 82.78 ± 7.50 BqKg-1, 578.39 ± 74.62 to 1038.69 ± 110.70 BqKg-1 respectively with an average value of 50.46 ± 6.20 Bq/Kg, 73.99 ± 7.56 BqKg-1and 881.49 ± 100.25 BqKg-1 respectively. The results for both the soil and sediment samples obtained for the corresponding nuclides are slightly higher than the worldwide average values of 35, 30 and 400 BqKg-1. The activity contents of the water samples did not show any evidence of enhancement. The calculated average absorbed dose rates due to these radionuclides in soil and sediment samples have been found as 106.13 nGyh-1 and 105.03 nGyh-1, respectively which is higher than worldwide average values. The estimated outdoor annual effective dose ranged from 0.11 to 0.14 mSvy-1 and 0.10 to 0.14 mSvy-1 with the mean values of 0.13 mSvy-1 and 0.13 mSvy-1 for soil and sediment samples, respectively. The values of radium equivalent activity in almost all the samples were less than 370 BqKg-1. On the other hand, the values of external hazard index for soil and sediment samples varied between 0.52 to 0.67 and 0.49 to 0.67 with the average values of 0.61 and 0.61, respectively. The values are less than unity in all the samples that indicate the nonhazardous nature of the samples and there is no possibility of immediate health effect on the workers, public and environment en_US
dc.description.statementofresponsibility Tuhina Islam
dc.format.extent 108 pages
dc.language.iso en_US en_US
dc.publisher Khulna University of Engineering & Technology (KUET), Khulna, Bangladesh. en_US
dc.rights Khulna University of Engineering & Technology (KUET) thesis/ dissertation/internship reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission
dc.subject Radiation en_US
dc.subject Radioactivity en_US
dc.subject Rupsha River en_US
dc.title Study on Probable Radionuclide Contents and Their Dose Assessment in Sand, Soil and Water Samples Collected from The Rupsha River, Khulna en_US
dc.type Thesis en_US
dc.description.degree Master of Science in Physics
dc.contributor.department Department of Physics

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