Published 2001 | Version v1
Computer medium Metadata-only

The spatial distribution of natural series radionuclides in phosphogypsum stacks

Creators

  • 1. Comissao Nacional de Energia Nuclear (CNEN), Pocos de Caldas, MG (Brazil). Laboratorio
  • 2. Centro de Energia Nuclear na Agricultura (CENA), Piracicaba, SP (Brazil)

Description

Phosphogypsum is a high volume by-product from the phosphoric acid industries, which contain naturally occurring radionuclides. Envisaging the uses of phosphogypsum, a characterization of this material in terms of the spatial distribution of the radionuclides was carried out by core samples taken from stacks of two important Brazilian phosphoric acid facilities. Samples were analyzed for 238 U, 234 U, 232 Th, 226 Ra, 228 Ra, 210 Pb and 210 Po, determined by alpha and gamma spectrometry and UV-VIS spectrophotometry. Specific activities of 238 U, 234 U, 226 Ra and 210 Po obtained were comparable with data reported in the phosphogypsum literature, while higher values were found for 232 Th and 228 Ra. (author)

Part of:
Proceedings of the 5. Regional congress on radiation protection and safety; 2. Iberian and Latin American Congress on Radiological Protection Societies; Regional IRPA Congress

Additional details

Publishing Information

Imprint Title
Proceedings of the 5. Regional congress on radiation protection and safety; 2. Iberian and Latin American Congress on Radiological Protection Societies; Regional IRPA Congress
Imprint Pagination
[1776 p.]
Journal Page Range
[6 p.]

Conference

Title
5. Regional congress on radiation protection and safety; 2. Iberian and Latin American Congress on Radiological Protection Societies; Regional IRPA Congress
Dates
29 Apr - 4 May 2001
Place
Recife, PE (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
33069012
Subject category
S54: ENVIRONMENTAL SCIENCES;
Resource subtype / Literary indicator
Conference
Descriptors DEI
GAMMA SPECTROSCOPY; GYPSUM; ISOTOPE RATIO; LEAD 210; NATURAL RADIOACTIVITY; PHOSPHORIC ACID; PHOSPHORITES; PHOSPHORUS; POLONIUM 210; RADIUM 226; RADIUM 228; SPATIAL DISTRIBUTION; SPECTROPHOTOMETRY; THORIUM 232; URANIUM 234; URANIUM 238
Descriptors DEC
ACTINIDE NUCLEI; ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON 14 DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; DISTRIBUTION; ELEMENTS; EVEN-EVEN NUCLEI; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LEAD ISOTOPES; MAGNESIUM 28 DECAY RADIOISOTOPES; MINERALS; NANOSEC LIVING RADIOISOTOPES; NEON 24 DECAY RADIOISOTOPES; NONMETALS; NUCLEI; OXYGEN COMPOUNDS; PHOSPHATE ROCKS; PHOSPHORUS COMPOUNDS; POLONIUM ISOTOPES; RADIOACTIVITY; RADIOISOTOPES; RADIUM ISOTOPES; ROCKS; SEDIMENTARY ROCKS; SPECTROSCOPY; SPONTANEOUS FISSION RADIOISOTOPES; SULFATE MINERALS; THORIUM ISOTOPES; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
15 refs., 2 tabs., 1 graph Imprint:Published only in CD-ROM. This electronic proceedings requires the Adobe Acrobat Reader 4.05 (included on this CD) and PC (at least 486 CPU) running Windows 95/98NT