Objective: Teeth are used as an important data source to estimate radioactivity accumulation in individuals. This study aimed evaluation the gross alpha (GA) and beta (GB) concentrations tooth samples.Methods: Mandibular permanent first molar teeth of individuals living Middle Black Sea region were for ensure standardization. The samples divided into 4 groups according age factor (Group 1: 6-15...

Studies of gross alpha and beta activity in road- surface-deposited sediments were conducted three Russian cities different geographical zones. To perform radiation measurements, new methods applied which allow dealing with low mass volume dust-sized (2–100 ?m) samples obtained after the size fractionation procedure. The 2–10 ?m fraction had highest concentration (GB)—1.32 Bq/g Nizhny Novgorod ...

High-speed, gross, alpha autoradiographs can be made if silver-activated zinc sulfide is used as an intensifier in conjunction with high-speed film. The intensifier is interposed between the sample and film. This technique requires about 1/1000 of the exposure time required with Kodak NTB plates. The gross autoradiographs have greater contrast but slightly less resolution than conventional plates.

PURPOSE The purpose of this study was to investigate the possible radioactive potential of zirconium dioxide (ZrO2) dental ceramics. Such information is necessary since they became an integral part of routine prosthetic rehabilitations and devoid of scientific information about their radioactivity creates some concern in the dental community. METHODS Four different types of commercial ZrO2 ce...

The long-standing problem related to prompt analyses in continuous air sampling or monitoring has been the well-known interference of the radon- and thoron-progeny co-deposited on the filtration media with any potential suspect radionuclides. The solutions to this problem have been quite diverse, and have included, for example, simple gross-alpha screening, the use of beta-to-alpha ratios, and/...

This work examines the potential use of two scintillation detectors for in-situ measurements of alpha and beta particles at various depths in soil. Use of an organic (plastic) scintillator was investigated for beta-particle measurements and a ZnS(Ag) inorganic scintillator was investigated for alpha-particle measurements. Each detector was connected to a photomultiplier tube by varying light-gu...