Isodose mapping of terrestrial gamma radiation dose rate of Selangor state, Kuala Lumpur and Putrajaya, Malaysia

Sanusi, M.S.M.; Ramli, Ahmad Termizi; Gabdo, Hamman Tukur; Garba, Nuraddeen Nasiru; Heryanshah, A.; Wagiran, Husin; Said, M.N.

doi:10.1016/j.jenvrad.2014.04.004

Cited by 51 publications

(20 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Annual effective dose (AED) for the population was estimated using the conversion coefficient (0.7 Sv Gy −1 ) from absorbed dose in air to effective dose received by adults (Ramli, Sahrone, & Wagiran, 2005;UNSCEAR, 2000) and 0.2 a occupancy factor for outdoor. This was estimated using equation 1 (Sanusi et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Geological influence on the terrestrial gamma radiation dose rate in Jos Plateau, Nigeria

Abba¹,

Abdulsalam²

2018

Bayero J. Pure App. Sci.

View full text Add to dashboard Cite

Natural environmental terrestrial gamma radiation dose (TGRD) rate measurements have been carried out across the geological formations of Jos Plateau, Nigeria. External gamma radiation dose rates ranged between 11 and 714 nGy h TGRD levels and geological type was determined. Statistical comparative method one way analysis of variance (ANOVA) was used to compare the TGRD means for the various results revealed in some instances, significant differences among the mean values of TGRD rates for the different underlying geological structures. Annual effective dose and collective effective dose for the general public due to exp mSv y -1 and 1.20x10 2 mSv y -1 , respectively. Isodose map for exposure rate due to TGRD wasplotted using ArcGIS software. The results will serve as database for natural background radiation for the country.

show abstract

Section: Resultsmentioning

confidence: 99%

Geological influence on the terrestrial gamma radiation dose rate in Jos Plateau, Nigeria

Abba¹,

Abdulsalam²

2018

Bayero J. Pure App. Sci.

View full text Add to dashboard Cite

show abstract

“…The higher concentration of Pb in the Langat River is mostly from the natural weathering of Pb minerals along the granite rock belt of Titiwangsa Mountain Range. Several studies have also reported the weathering of Pb from the minerals such as Teallite (PbSnS2), Galena (PbS), Franckeite ((PbSn) 6FnSn2Sb2S14) are the important sources of Pb concentration in Langat [18,19]. Apart from the natural weathering process, the use of fertilizers such as arsenal herbicides (i.e.…”

Section: Dissolved Pb Concentration In Raw Watermentioning

confidence: 99%

A Review on Lead (Pb) Contamination in the Drinking Water Supply at Langat River Basin, Malaysia

Alam¹

2017

MOJT

View full text Add to dashboard Cite

Safe water supply at Langat River Basin, Malaysia is very crucial being Langat River the prime source of raw water in the basin. Although several study both river and supply water at the Langat Basin determined higher concentration of dissolved lead (Pb), however, there is no significant study that investigates the Pb concentration in the drinking water supply chain of the basin. Therefore, the review of secondary literature explores the status of dissolved Pb in drinking water supply chain at the Langat Basin in comparison with some other countries. Apart from man-made activities, the higher concentrations of dissolved Pb both in the raw and supply water are mainly from the natural weathering of Pb minerals within the granite rock of Titiwangsa Mountain Range of Langat Basin and the corrosion of galvanized iron pipe, respectively. Therefore, the use of reverse osmosis technology to treat both the raw and supply water at the basin could ensure safe drinking water supply as well as sound health of the populations.

show abstract

“…A total of 241 in-situ measurements were made in the study areas covering a total of 20,259.2 km Calculated dose rates DC for the 29 samples were then compared to their respective insitu dose rate readings by linear regression to obtain a correction factor Cf to be applied to all in-situ measurements producing corrected dose rates Dm (Sanusi, 2014).…”

Section: Data Collectionmentioning

confidence: 99%

“…This correction factor Cf was then applied to the remaining 239 dose rate readings. Mean corrected dose rate reading Dm is 47 ± 1 nGy h Sanusi et al, 2014) . A prediction model of geological formation and soil types contribution to the dose rate readings was generated, producing the equation DG,S = 0.847DG + 0.637DS -22.313 with a normalized Beta coefficient equation of DG,S = 0.605DG + 0.395DS, translating to 60.5% contribution from geological background and 39.5% contribution from soil types to dose rates.…”

Section: Datamentioning

confidence: 99%

Terrestrial Gamma Radiation Dose Rate of West Sarawak

et al. 2017

Self Cite

View full text Add to dashboard Cite

Abstract. A study of terrestrial gamma radiation (TGR) dose rate was conducted in west of Sarawak, covering Kuching, Samarahan, Serian, Sri Aman, and Betong divisions to construct a baseline TGR dose rate level data of the areas. The total area covered was 20,259.2 km 2 , where in-situ measurements of TGR dose rate were taken using NaI(Tl) scintillation detector Ludlum 19 micro R meter NaI(Tl) approximately 1 meter above ground level. Twenty-nine soil samples were taken across the 5 divisions covering 26 pairings of 9 geological formations and 7 soil types. A hyperpure Germanium detector was then used to find the samples' . A multiple regression analysis was conducted between geological means and soil types means against the corrected TGR dose rate Dm, generating DG,S = 0.847DG + 0.637DS -22.313 prediction model with a normalized Beta equation of DG,S = 0.605DG + 0.395DS. The model has an 84.6% acceptance of WhitneyMann test null hypothesis when tested against the corrected TGR dose rates.

show abstract

Isodose mapping of terrestrial gamma radiation dose rate of Selangor state, Kuala Lumpur and Putrajaya, Malaysia

Cited by 51 publications

References 21 publications

Geological influence on the terrestrial gamma radiation dose rate in Jos Plateau, Nigeria

Geological influence on the terrestrial gamma radiation dose rate in Jos Plateau, Nigeria

A Review on Lead (Pb) Contamination in the Drinking Water Supply at Langat River Basin, Malaysia

Terrestrial Gamma Radiation Dose Rate of West Sarawak

Contact Info

Product

Resources

About