Assessment of natural radioactivity and radiation risks in soil near the Manyoni uranium deposit, Tanzania.

G W Mlay, M I Kaniu, L W Njenga, K D Njoroge, M J Gatari, K K Kilel, I J Lugendo

Abstract read

In one paragraph

Article in Radiation protection dosimetry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

G W MlayDepartment of Electrical and Information Engineering, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya.ORCID 0009-0001-7478-5109

M I KaniuDepartment of Physics, University of Nairobi, P.O. Box 30197 - 00100, Nairobi, Kenya.

L W NjengaDepartment of Chemistry, University of Nairobi, P.O. Box 30197 - 00100, Nairobi, Kenya.

K D NjorogeDepartment of Mechanical and Manufacturing Engineering, University of Nairobi, P.O. Box 30197 - 00100, Nairobi, Kenya.

M J GatariDepartment of Electrical and Information Engineering, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya.

K K KilelDepartment of Physics, Kenyatta University, P.O. Box 43844-00100 Nairobi, Kenya.

I J LugendoDepartment of Physics, University of Dar es Salaam, P.O. Box 35063, Dar es Salaam, Tanzania.

Funding

Ministry of Education, Science and Technology, Tanzania

6 · The paper itself

Abstract

This study reports on natural radioactivity levels and radiation risk estimates from soil samples collected in five villages near the Manyoni Uranium Deposit in central Tanzania. The mean activity concentrations of 40K, 232Th, and 238U were 207 Bq kg-1, 78 Bq kg-1, and 302 Bq kg-1, respectively. While 40K levels were below the world average, the levels of 232Th and 238U were more than 1.7 and 9.2 times higher than world average values. The average absorbed dose rate for the area was 196 nSv h-1. Annual effective dose estimate values for outdoor and indoor exposure were 0.24 mSv and 0.96 mSv, respectively, exceeding global averages by 3.4 and 2.3 times. Based on the average external hazard index (Hex = 1.19) and excess lifetime cancer risk (ELCR = 0.46%), there is a potential risk of radiological effects from radiation exposure, with Mwanzi Village identified as a high background radiation area.

Indexed as

Background RadiationPotassium RadioisotopesRadiation MonitoringSoil Pollutants, RadioactiveThoriumUraniumRadiation DosageRadiation ExposureRisk AssessmentTanzaniaPotassium RadioisotopesSoil Pollutants, RadioactiveThoriumThorium-232UraniumUranium-238

Identifiers

PMID40130569

DOI10.1093/rpd/ncaf021

PMCPMC11977111

What OpenQuestion holds

Textmetadata

LicenceCC BY-NC-ND

Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.