Rn and Rn levels in drinking water, emanation, and exhalation assessment, and the related health implications in the U-bearing area of Poli-Cameroon.

The inherent radioactivity of radon gas presents potential exposure risks to human beings through ingestion and inhalation of its radioisotopes Rn (radon) and Rn (thoron) from water sources. Recent studies have been conducted to assess radon concentrations in different environmental matrices such as water, air, and soil, due to their detrimental impact on human health. As the main cause of lung cancer in non-smokers and an acknowledged contributor to stomach cancer when ingested, the present study aimed to preliminarily assess radon and thoron levels in the Uranium bearing area of Poli in the Faro division of Cameroon, known for its significant U-deposits.

Study of soil-fern transfer of naturally occurring alpha emitting radionuclides in the Southern Region of Cameroon.

This study was carried out in the localities Melondo and Ngombas located in the Southern Region of Cameroon where there are known to be uranium-bearing and high background radiation areas. Activity concentrations of naturally occurring radionuclides Po, U, U, U, Th, Th, Th and Ra were determined in soil and fern (filicophyta) samples collected at 10 points in both localities. In soil, the average values of these activity concentrations (in Bq.

Natural background dose measurements in south Cameroon.

The natural background doses due to (40)K, (226)Ra and (232)Th have been measured in soil samples collected from various sampling sites in the locality of Lolodorf, Cameroon. For data acquisition and analysis, a high-purity germanium detector and a PC-based MCA were used. The mean activity concentrations of (40)K, (226)Ra and (232)Th were measured to be 2001 +/- 521, 329 +/- 491 and 414 +/- 309 Bq kg(-1), respectively, in rock samples, while in soil samples the activity concentrations were found to be 1482 +/- 280 Bq kg(-1) for (40)K, 134 +/- 64 Bq kg(-1) for (226)Ra and 177 +/- 102 Bq kg(-1) for (232)Th.