A combined method for evaluating radon and progeny in waters and its use at Guarani aquifer, São Paulo State, Brazil.
J Environ Radioact
; 86(3): 337-53, 2006.
Article
in En
| MEDLINE
| ID: mdl-16337318
A combined method for evaluating radon (222Rn) and progeny (214Pb and 214Bi) in water was developed by using inexpensive alpha scintillation counting and gamma ray spectrometry through NaI(Tl) scintillation detectors. A groundwater sample collected at the Poços de Caldas alkaline massif in Brazil was submitted to the technique in order to assure its applicability by comparing the volumetric activities by different methods. Similar volumetric activity was determined for 214Pb and 214Bi in the sample analyzed that is compatible with the expected condition of radioactive equilibrium between these nuclides. The combined method was successfully used to analyze groundwater samples from Guarani aquifer in São Paulo State, Brazil, and the results of the measurements indicated that 214Pb and 214Bi provide useful information concerning the evaluation of the drinking water quality in terms of radiological aspects. This is because they are directly identified in the water samples, without the need of requiring the assumption of the establishment of the transient equilibrium condition with its parent 222Rn.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Water Pollutants, Radioactive
/
Water Supply
/
Radon
Type of study:
Evaluation_studies
Limits:
Humans
Country/Region as subject:
America do sul
/
Brasil
Language:
En
Journal:
J Environ Radioact
Journal subject:
SAUDE AMBIENTAL
Year:
2006
Document type:
Article
Affiliation country:
Brazil
Country of publication:
United kingdom