Gross Alpha Beta Radioactivity in Air Filters Measured by Ultra Low Level alpha/beta Counter
- Centre of Applied Nuclear Physics, Faculty of Natural Sciences, Tirana University, Albania P. O. Box 85, 'Qesarak' street, Tirana (Albania)
- Department of Physics, Faculty of Natural Sciences, Tirana University, Albania P. O. Box 35, 'Bulevardi Zogu I' street, Tirana (Albania)
Study of radioactivity in air as very important for life is done regularly using different methods in every country. As a result of nuclear reactors, atomic centrals, institutions and laboratories, which use the radioactivity substances in open or closed sources, there are a lot radioactive wastes. Mixing of these wastes after treatment with rivers and lakes waters makes very important control of radioactivity. At the other side nuclear and radiological accidents are another source of the contamination of air and water. Due to their radio toxicity, especially those of Sr{sup 90}, Pu{sup 239}, etc. a contamination hazard for human begins exist even at low concentration levels. Measurements of radioactivity in air have been performed in many parts of the world mostly for assessment of the doses and risk resulting from consuming air. In this study we present the results of international comparison organized by IAEA Vienna, Austria for the air filters spiked with unknown Alpha and Beta Activity. For the calibration of system we used the same filters spiked: a) with Pu-239 as alpha source; b) Sr-90 as beta source and also the blank filter. The measurements of air filter samples after calibration of the system are done with Ultra Low Level alpha/beta Counter (MPC 9604) Protean Instrument Corporation. The high sensitivity of the system for the determination of the Gross Alpha and Beta activity makes sure detection of low values activity of air filters. Our laboratory results are: Aalpha = (0.19+-0.01) Bq/filter and Aalpha(IAEA) = (0.17+-0.009) Bq/filter; A{sub b}eta = (0.33+-0.009) Bq/filter and A{sub b}eta (IAEA) = (0.29+-0.01) Bq/filter. As it seems our results are in good agreement with reference values given by IAEA (International Atomic Energy Agency).
- OSTI ID:
- 21371474
- Journal Information:
- AIP Conference Proceedings, Vol. 1203, Issue 1; Conference: 7. international conference of the Balkan Physical Union, Alexandroupolis (Greece), 9-13 Sep 2009; Other Information: DOI: 10.1063/1.3322507; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AIR
AIR FILTERS
AIR POLLUTION
ALPHA DETECTION
BETA DETECTION
CALIBRATION
COMPARATIVE EVALUATIONS
CONTAMINATION
HAZARDS
INTERLABORATORY COMPARISONS
PLUTONIUM 239
RADIOACTIVITY
STRONTIUM 90
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLE DETECTION
DETECTION
EQUIPMENT
EVALUATION
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FILTERS
FLUIDS
GASES
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
PLUTONIUM ISOTOPES
POLLUTION
POLLUTION CONTROL EQUIPMENT
RADIATION DETECTION
RADIOISOTOPES
SPONTANEOUS FISSION RADIOISOTOPES
STRONTIUM ISOTOPES
YEARS LIVING RADIOISOTOPES