RADIOLOGICAL ASSESSMENT OF WATER AND SEDIMENTS OF ZOBE DAM DUTSINMA IN KATSINA STATE FOR NATURAL RADIONUCLIDES

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dc.contributor.authorUSMAN, NAJIB MANNIR
dc.date.accessioned2017-02-02T09:39:55Z
dc.date.available2017-02-02T09:39:55Z
dc.date.issued2015-07
dc.descriptionA THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF A MASTER DEGREE OF SCIENCE IN NUCLEAR PHYSICS DEPARTMENT OF PHYSICS, FACULTY OF SCIENCES AHMADU BELLO UNIVERSITY, ZARIA NIGERIAen_US
dc.description.abstractA radioactivity measurement was carried out in water and sediments of Zobe Dam. Samples of sediments from Zobe Dam were collected, prepared and analysed using NaI(Tl) gamma ray spectrometer for the activity concentrations of the primordial 226Ra, 232Th and 40K. The results obtained show average activity concentrations of 49.67±3.07 (35.89-75.75), 127.29±4.42 (47.21112.91) and 443.43±9.51 (338.88-638.40) in Bq/kg for 226Ra, 232Th and 40K respectively. To assess the radiological hazard of Dam sediments, the radiological hazard indices such as absorbed dose rate, annual effective dose equivalent (AEDE), hazard indices (Hex and Hin) were calculated and found to be comparable with the world average values. The mean absorbed dose rate obtained is124.52 nGy/ h, and is higher than the world average of 55 nGy/h. The measured average annual effective dose rate 0.152mSv/y, and is lower than the world average value of 1 mSv/y (ICRP, 1991). The measured average values of external and internal hazard index is 0.717 and 0.851 and are lower than unity set by ICRP,2000, which indicate that the sediments in all the sampling sites can be used for safety construction of buildings. The gross alpha and beta radioactivity of water samples were measured using gas proportional counter. The result show that the gross alpha and beta radioactivity in water samples is higher than the maximum contaminant levels of 0.1 and 1.0Bq/L set by WHO. The ranges of the measured alpha and beta activity were found to be between 0.595±0.26 to 9.547±0.37Bq/L with mean of 6.18±0.30 Bq/L and 2.837±0.77 to12.119±0.46 Bq/L with mean of 8.332±0.44 Bq/L and this indicate that the water in all the sampling sites is not safe for livestock and domestic consumption if compared with WHO values.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/8625
dc.language.isoenen_US
dc.subjectRADIOLOGICAL ASSESSMENT,en_US
dc.subjectWATER,en_US
dc.subjectSEDIMENTS,en_US
dc.subjectZOBE DAM DUTSINMA,en_US
dc.subjectKATSINA STATE,en_US
dc.subjectNATURAL RADIONUCLIDES,en_US
dc.titleRADIOLOGICAL ASSESSMENT OF WATER AND SEDIMENTS OF ZOBE DAM DUTSINMA IN KATSINA STATE FOR NATURAL RADIONUCLIDESen_US
dc.typeThesisen_US
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