A NEW METHOD FOR THE ESTIMATION OF RADON AND THORON CONTAMINATION IN AIR AND ITS APPLICATIONS
Technical Report
·
OSTI ID:4260868
An instrument depending upon the collection of charged ions for the estimation of thoron and its daughter products in air is described. The positively charged ions of the decay products of thoron from a known volume of air are collected on a metal disk by the application of a suitable electric fleld. The alpha activity of the collected samples is measured with a scintillation counter. A comparison is made of the methods of collection of dust on filter papers and ion collection for the estimation of thoron levels. Absolute estimation of thoron levels is possible by the ion collection method whereas in dust collection there is no certainty about the size of dust to which the daughter products of thoron are attached. The instrument was used for a survey of thoron levels in a plant for the production of thorium nitrate. (auth)
- Research Organization:
- Atomic Energy Establishment, Trombay, India
- NSA Number:
- NSA-13-006742
- OSTI ID:
- 4260868
- Report Number(s):
- A/CONF.15/P/1643
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Technical Report
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OSTI ID:5364653
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Journal Article
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· American Industrial Hygiene Association Journal (U.S.) Formerly Am. Ind. Hyg. Assoc. Q.
·
OSTI ID:4096255
Thoron and Hazards Associated with the Handling of Thorium Compounds; LE THORON ET LES RISQUES ASSOCIES DANS LA MANIPULATION DES COMPOSES DU THORIUM
Technical Report
·
Fri Oct 30 23:00:00 EST 1959
·
OSTI ID:4291464
Related Subjects
AIR
ALPHA PARTICLES
CONTAMINATION
DECAY
DUSTS
EFFICIENCY
ELECTRIC CHARGES
ELECTRIC FIELDS
FABRICATION
FILTERS
INSTRUMENTS
IONS
MEASURED VALUES
METALS
MONITORING
OPERATION
PAPER
PLANNING
PLATES
QUANTITATIVE ANALYSIS
RADIOACTIVITY
RADIOISOTOPES
RADON
RADON 220
SAMPLING
SCINTILLATION COUNTERS
THORIUM NITRATES
USES
VOLUME
ALPHA PARTICLES
CONTAMINATION
DECAY
DUSTS
EFFICIENCY
ELECTRIC CHARGES
ELECTRIC FIELDS
FABRICATION
FILTERS
INSTRUMENTS
IONS
MEASURED VALUES
METALS
MONITORING
OPERATION
PAPER
PLANNING
PLATES
QUANTITATIVE ANALYSIS
RADIOACTIVITY
RADIOISOTOPES
RADON
RADON 220
SAMPLING
SCINTILLATION COUNTERS
THORIUM NITRATES
USES
VOLUME