Determination of traces of uranium and thorium concentration in some egyptian environmental matrices by instrumental neutron activation analysis
- 1. Physks Department Faculty of Science. Al-A zher University, Assuit (Egypt)
- 2. Institutfar Kernchemie, Universitdt Afainz, fl-55128 Maint (Germany)
- 3. Nuclear Physics Depatrmen4 Atomic Research Center, AEA. Cairo. (Egypt)
- 4. Department of Radoiactive Environmental Pollution, Hot Laboratories Center, AEA. Cairo. (Egypt)
Description
Uranium and thorium isotopes found in soil, rock, water, plant, air, etc., contribute to the natural radiation exposure of the population. U and Th concentrations in some Egyptian environmental samples like Toshki soil, Aswan iron-ore, El-Sukari and Atud gold vein deposits in Eastern desert and phosphate samples from El-Sibayla in the Nile Valley and EI-Quseir in the Red Sea coast were determined using instrumental neutron activation analysis. The samples were irradiated by thermal neutrons flux of 7x1011 n/cm2.s in Mainz TRIGA research reactor. The results showed that the phosphate rocks are rich natural sources of uranium and thorium among the other minerals forming the earth crust. For comparison we used also the delayed neutron activation analysis to determine the uranium content in the same samples
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Additional details
Publishing Information
- Imprint Title
- Proceedings of the First Environmental Physics Conference (EPC-2004)
- Imprint Pagination
- 252 p.
- Journal Page Range
- p. 141-149
- Report number
- INIS-EG--180(vol.I)
Conference
- Title
- 1. Environmental Physics Conference
- Acronym
- EPC-2004
- Dates
- 24-28 Feb 2004
- Place
- Minya (Egypt)
INIS
- Country of Publication
- Egypt
- Country of Input or Organization
- Egypt
- INIS RN
- 38009345
- Subject category
- S54: ENVIRONMENTAL SCIENCES;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AIR; CHEMICAL ANALYSIS; EGYPTIAN ARAB REPUBLIC; ENVIRONMENT; HUMAN POPULATIONS; NATURAL RADIOACTIVITY; NEUTRON ACTIVATION ANALYSIS; PHOSPHATE ROCKS; PLANTS; RADIATION DOSES; RADIOCHEMICAL ANALYSIS; ROCKS; SOILS; THERMAL NEUTRONS; THORIUM ISOTOPES; URANIUM CONCENTRATES; URANIUM ISOTOPES; WATER
- Descriptors DEC
- ACTIVATION ANALYSIS; AFRICA; ARAB COUNTRIES; BARYONS; CHEMICAL ANALYSIS; DEVELOPING COUNTRIES; DOSES; ELEMENTARY PARTICLES; FERMIONS; FLUIDS; GASES; HADRONS; HYDROGEN COMPOUNDS; ISOTOPES; MIDDLE EAST; NEUTRONS; NONDESTRUCTIVE ANALYSIS; NUCLEONS; ORE CONCENTRATES; ORES; OXYGEN COMPOUNDS; POPULATIONS; QUANTITATIVE CHEMICAL ANALYSIS; RADIOACTIVITY; ROCKS; SEDIMENTARY ROCKS; URANIUM ORES