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Thorium ore dust research applicable to mineral sands industry workers.
J Radiol Prot
January 2025
School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia.
Historically, radiation exposure to mineral sands workers arose primarily from intake of thorium associated with monazite dust generated in mineral separation plants. Research investigations in the 1990s provided greater insight into the characteristics of inhaled thorium ore dust and bioassay studies inferred that some workers had accumulated significant lung burdens of thorium. Recent changes to biokinetic models have increased the radiation dose assessed to arise from thorium intake, raising questions on the appropriateness of current assumptions used in exposure assessment and feasibility of further bioassay research.
View Article and Find Full Text PDFMeasurement of natural radionuclides and health risk assessment in soil samples of the Main Central Thrust region in Garhwal Himalaya, India.
Environ Monit Assess
January 2025
Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, 249199, India.
Ionizing radiation emitted from radionuclides is present everywhere in the environment. It is the main source of health hazards to the general public. The present study elaborates on the analysis of primordial radionuclides in the collected soil samples from the Main Central Thrust (MCT) region of Uttarakhand Himalaya in a grid pattern.
View Article and Find Full Text PDFThe thorium isomer Th: review of status and perspectives after more than 50 years of research.
Eur Phys J Spec Top
January 2024
Faculty of Physics, Ludwig-Maximilians-Universität München, Am Coulombwall 1, Garching, 85748 Germany.
Article Synopsis
- Today's precise timekeeping relies on optical atomic clocks, but nuclear clocks, using nuclear transitions, could offer enhanced accuracy for various scientific applications.
- The elusive "Thorium Isomer" (Th) is a potential candidate for a nuclear clock, which has been under investigation for decades but only recently confirmed through direct detection in 2016.
- Significant advances in characterizing Th's properties have been made, including determining its half-life and excitation energy, culminating in the first observation of its radiative decay, paving the way for further developments in precise timekeeping.
Radiation doses received by humans in their dwellings - A baseline report on radionuclides exposure from construction materials used in Chennai, Tamil Nadu, India.
J Hazard Mater
February 2025
Unit of Research in Radiation Biology & Environmental Radioactivity (URRBER), P.G. & Research Department of Zoology, The New College (Autonomous), Affiliated to University of Madras, Chennai, Tamil Nadu 600 014, India. Electronic address:
Gamma-ray spectrometry was employed to assess the activity concentrations of primordial radionuclides (U, Th, and K) in various construction materials, including those used for building, roofing, furnishing, flooring, and plastering. The measured activity concentrations of the radionuclides ranged as follows: U (25 to 477 Bq kg), Th (below detection limit to 239 Bq kg), and K (285 to 1915 Bq kg). Based on these values, the materials were categorized in descending order of radioactivity threat as: Furnishing > Roofing > Building > Flooring > Plastering.
View Article and Find Full Text PDFAssessment of heavy metal and radioactive element levels in the ovarian follicular fluid of pregnant and non-pregnant Kyrgyz breed mares.
J Adv Vet Anim Res
September 2024
Faculty of Veterinary Medicine, Firat University, Elazığ, Türkiye.
Objective: In the current study, we aimed to ascertain the levels of heavy metals and radioactive elements in the ovarian follicular fluids of pregnant and non-pregnant Kyrgyz mares.
Materials And Methods: To this end, follicular fluids were obtained from 49 Kyrgyz mares aged 3-5 years. The mares were in various stages of pregnancy (Group 1, 27) or were non-pregnant (Group 2, 22).
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