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107745

Artisanal Gold Mining Activity in Northcentral Nigeria and Its Implications: Radiological Approach

Article

Last updated: 03 Jan 2025

Subjects

-

Tags

Physics

Abstract

Artisanal gold mining is one of the anthropogenic activities identified by the United Nations Scientific Committee on the Effects of Atomic Radiation as potential source of exposure to naturally occurring radionuclides. 40 surface soil samples collected at random from Gababiyu artisanal gold mining site in Minna Metropolis were assessed for their natural radioactivity using gamma spectrometric technique which employs NaI (Tl) gamma-ray detector. Specific activities of 226Ra, 232Th and 40K in the soil varied from 10.27±2.88 to 152.60±3.80, 32.67±1.93 to 185.90±6.06 and 35.18±1.45 to 947.50±7.51 Bq kg-1 respectively, with mean values of 65.06±4.20, 87.63±2.89 and 267.94±4.29 Bq kg-1 in sequence. Although 226Ra and 232Th recorded activity values slightly above world average, they are still within safety range prescribed by UNSCEAR. Computed average absorbed dose rate at 1 m above ground was 94.16 nGy h-1 with corresponding mean annual dose equivalent of 0.12 mSv.y-1. Furthermore, calculated average excess lifetime cancer risk was found to be 0.40×10-3, which is slightly above the UNSCEAR safety limit. Pearson correlation statistics identified 226Ra and 232Th as principal radionuclides responsible for the computed radiation risk variables. Although the results of this investigation does not show any immediate radiological risk, continuous monitoring of the gold mining site is encouraged in order to keep the radiation effects as low as reasonably achievable.

DOI

10.21608/jntas.2020.29717.1021

Keywords

Artisanal gold mining, Excess lifetime cancer risk, NORM, Northcentral Nigeria, NaI (Tl) gamma detector

Authors

First Name

Matthew

Last Name

Kolo

MiddleName

T

Affiliation

Department of Physics, School of Physical Sciences, Federal University of Technology, Minna, Niger State, Nigeria

Email

matthewkolo@futminna.edu.ng

City

-

Orcid

-

First Name

Mahmoud

Last Name

Gomina

MiddleName

-

Affiliation

Department of Physics, School of Physical Sciences, Federal University of Technology, Minna, Niger State, Nigeria

Email

gomina.pg820161@st.futminna.edu.ng

City

Minna

Orcid

-

First Name

Bamidele

Last Name

Awojoyogbe

MiddleName

-

Affiliation

Department of Physics, School of Physical Sciences, Federal University of Technology, Minna, Niger State, Nigeria

Email

abamidele@futminna.edu.ng

City

Minna

Orcid

-

First Name

Oyeleke

Last Name

Olarinoye

MiddleName

-

Affiliation

Department of Physics, School of Physical Sciences, Federal University of Technology, Minna, Niger State, Nigeria

Email

leke.olarinoye@futminna.edu.ng

City

Minna

Orcid

-

Volume

8

Article Issue

1

Related Issue

11080

Issue Date

2020-01-01

Receive Date

2020-05-08

Publish Date

2020-01-01

Page Start

97

Page End

111

Print ISSN

2314-8209

Online ISSN

2314-8217

Link

https://jntas.journals.ekb.eg/article_107745.html

Detail API

https://jntas.journals.ekb.eg/service?article_code=107745

Order

8

Type

Original Article

Type Code

632

Publication Type

Journal

Publication Title

Journal of Nuclear Technology in Applied Science

Publication Link

https://jntas.journals.ekb.eg/

MainTitle

Artisanal Gold Mining Activity in Northcentral Nigeria and Its Implications: Radiological Approach

Details

Type

Article

Created At

22 Jan 2023