Natural Radioactivity and radiological Hazard analysis of Construction stones from various queries in Machakos County Kenya. Radiation Protection Dosimetry.
dc.contributor.author | Muthama, Matsitsi | |
dc.date.accessioned | 2023-11-20T10:31:47Z | |
dc.date.available | 2023-11-20T10:31:47Z | |
dc.date.issued | 2023-07 | |
dc.description | Hazard analysis of construction stones | en_US |
dc.description.abstract | The radioactivity levels of rocks sampled from the quarries of Kyasioni, Mavoloni and Kathaana located in the lower Eastern County of Machakos in Kenya were determined. Forty-two samples were collected using stratified random sampling and analysed using NaI(TI) detector with a specially designed lead shield. The parametric values of activity concentration, absorbed dose, annual dose rate and hazard indices were estimated using activity-dose relations suggested in UNSCEAR and ICRP reports. The mean activity concentration for the entire work for 238U (226Ra), 232Th and 40K were 68.33 ± 3.11, 101.10 ± 1.83 and 1084.02 ± 30.28 Bq/kg, respectively. Kyasioni quarry presented the highest activity concentration of 74.75 ± 3.15, 118.48 ± 1.91 and 1120.35 ± 30.07 Bq/kg for 226Ra, 232Th and 40K, respectively. The average annual effective dose was estimated as 0.58 ± 0.01, 0.47 ± 0.01 and 0.52 ± 0.01 mSv/y for Kyasioni, Kathaana and Mavoloni quarries, respectively. Other radiological parameters estimated from the corresponding activities were within the recommended limits hence guaranteeing safety to the users. | en_US |
dc.identifier.citation | Radiation Protection Dosimetry 199(3) | en_US |
dc.identifier.uri | DOI:10.1093/rpd/ncad211 | |
dc.identifier.uri | https://karuspace.karu.ac.ke/handle/20.500.12092/2975 | |
dc.language.iso | en | en_US |
dc.title | Natural Radioactivity and radiological Hazard analysis of Construction stones from various queries in Machakos County Kenya. Radiation Protection Dosimetry. | en_US |
dc.type | Article | en_US |