Track topics on Twitter Track topics that are important to you
In this paper, documented studies on radon and thoron concentrations in earthen dwellings and U and Th concentrations in soil in Kenya are reviewed. High concentrations of the isotopes were recorded in the earthen dwellings despite being generally well ventilated. Mrima Hill in the Coast region recorded the highest thoron levels with a mean of 652 Bq m. Twenty five percent of dwellings had thoron concentration in excess of 1,000 Bq m. Notably high indoor radon levels were recorded in Taita Taveta also in the Coast region, and in Kenyatta University situated in Nairobi in the Central region of the country. Radon concentration in the Rift Valley region was found to be too low to contribute significantly to radiation exposure. Based on studies on the concentration of U and Th in soil, the Southwestern region of the country was anticipated to have elevated radon/thoron concentrations in earthen dwellings. Existing studies involving measurement of indoor radon and thoron, and Ra and Th in soil are relatively few and of a small scale. More extensive studies are therefore necessary not only to corroborate the risk projections but to also generate sufficient data to enable countrywide mapping of indoor radon/thoron risk-prone areas.
This article was published in the following journal.
Name: Frontiers in public health
Human beings are continuously exposed to ionising radiation originating from natural or artificial sources. Uranium-238 and Thorium-232 found in building materials are important sources of radon and t...
Six research studies involving radon and thoron in Kenya were carried out between 1997 and 2007. The studies were mainly small scale and involved a few areas scattered across Nairobi, Rift Valley, Coa...
Radon and thoron are natural radioactive gases that tend to accumulate in the indoor environment and one of their major health implications is the ability to cause lung cancer. Present study comprises...
Radon (Rn) and thoron (Rn), and especially their short-lived decay products, are major contributors to dose received by the public from naturally occurring radioactive material (NORM), particularly in...
In air filter assay for radiological emergency response, radon (<sup>222</sup>Rn) and thoron (<sup>220</sup>Rn) progeny are known interferents t...
Despite a push for tailored messages, health communications are often aimed at, and viewed by, people with varying levels of risk. This project examined—in the context of radon risk mess...
The study aimed to investigate effects of radon (plus CO2) baths on RA in contrast to artificial CO2 baths in RA rehabilitation. 134 patients of an in-patient rehabilitative programme wer...
Observation conducted during the 21 days of treatment in the health resort of Swieradow-Zdroj. In a treatment of applied therapy: radon therapeutic baths and inhalations, kinesiotherapy. S...
The research question is "Are the different types of house in Ho Chi Minh city equally contributing to chronic respiratory diseases?". According to this question, a cross-sectional and ex...
In six communities we will seek out households where someone who has a history of respiratory problems. For the first winter we will measure temperature and humidity of the house and healt...
Radon. A naturally radioactive element with atomic symbol Rn, atomic number 86, and atomic weight 222. It is a member of the noble gas family and released during the decay of radium and found in soil. There is a link between exposure to radon and lung cancer.
Short-lived radioactive decay products of radon that include 216-Po, 214-Pb, 214-Bi, and 214-Po. They have an effective half-life of about 30 minutes and are solids that can deposit on the bronchial airways during inhalation and exhalation. This results in exposure of the respiratory airways to alpha radiation and can lead to diseases of the respiratory system, including lung cancer. (From Casarett and Doull's Toxicology, 4th ed, p740)
The inhabitants of rural areas or of small towns classified as rural.
The status of health in rural populations.
Hospitals located in a rural area.