Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Natural environmental radioactivity from radon 222 /
Author Pearson, John Edwin,
CORP Author National Center for Radiological Health, Rockville, Md.
Publisher U.S. National Center for Radiological Health,
Year Published 1967
Report Number PHS PUB 999 RH 26
Stock Number PB-176 193
OCLC Number 54367216
Subjects Atmospheric radioactivity. ; Radon.
Additional Subjects ( Radioactive isotopes ; Environment) ; ( Radon ; Environment) ; ( Natural radioactivity ; Radon) ; Soils ; Radium ; Radioactive decay ; Uranium ; Plants(Botany) ; Atmosphere ; Sampling ; Statistical analysis
Library Call Number Additional Info Location Last
EMBD  PB-176193 GWERD Library/Ada,OK 04/30/2004
NTIS  PB-176 193 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation vi, 31 pages : illustrations ; 24 cm.
Radium 226 and radon 222 were measured using a deemanation method in which the gaseous daughter, radon 222, is collected and analyzed by an alpha-scintillation method. 'Emanating radium 226' from particles of soil in clay type soils varied from 0.342x10 to the - 12th power grams per gram of dry soil to 0.690x10 to the - 12th power grams per gram. Sandy soils varied between 0.147x10 to the - 12th power to 0.244x10 to the - 12th power. Highest activity measured was 14.3x10 to the - 12th power grams of 'emanating radium 226' per gram of dry soil containing uranium ore. Emanation from ground in Champaign County, Ill., for 216 measurements, was (140 plus or minus 73) x10 to the - 18th power curies of radon 222/sq cm/sec. Other soils released similar values of radon 222 except at locations where uranium 238 is available in commercially significant amounts. Release of radon 222 from the leaves of corn (Zea mays L.) about midday and near the growth peak was approximately 2.6 times that of the soil under the corn at Argonne National Laboratory in one series of six tests. Radon 222 concentrations in the atmosphere were measured in eight series of 24-hour tests, to elevations of 16 m. Values of concentration at various times of the day are presented for the normal environmental levels. (Author)
Includes bibliographical references (page 31). Microfiche.