0704-883-0675     |      dataprojectng@gmail.com

DETERMINATION OF NATURAL RADIOACTIVITY OF SOME SELECTED ECONOMIC MINERALS FROM QUARRY SITES IN IGARRA AREA, EDO STATE, NIGERIA

  • Project Research
  • 1-5 Chapters
  • Abstract : Available
  • Table of Content: Available
  • Reference Style: APA
  • Recommended for : Student Researchers
  • NGN 5000

ABSTRACT

Activity concentrations of radionuclides in rocks and minerals are of vital importance in geosciences and health physics especially that primordial radionuclides constitute the main source of radiation exposure risks externally in soil, rocks and minerals. In this study, samples of four (4) economic minerals, namely dolomite, feldspar, limestone and calcite, were collected from quarry sites in Igarra area, Edo State, Nigeria and analysed using gamma ray spectrometric technique. From the analytical results, the specific activity concentrations of 226Ra, 232Th and 40K for dolomite ranges from 0.79±0.1 to 4.3±0.24 Bq/kg, 0.27±0.09 to 3.65±0.30 Bq/kg and 27.4±1.91 to 505.19±8.19 Bq/kg with respective mean of 2.88 Bq/kg, 1.61Bq/kg and 227.33 Bq/kg. In feldspar, the activity values range from 0.69±0.09 to 2.01±0.15 Bq/kg for 226Ra, 0.52±0.11 to 1.06±0.15 Bq/kg for 232Th and 49.29±2.30 to 248.42±4.99 Bq/kg for 40K with respective mean of 1.40, 0.76 and 152.28 Bq/kg. Also in calcite, the activity concentration ranges from 0.54±0.09 to 10.57±0.41 Bq/kg for 226Ra, 1.28±0.19 to 6.12±0.44 Bq/kg for 232Th and 81.37±3.32 to 795.16±11.02 Bq/kg for 40K with respective mean of 5.54, 3.81 and 466.62 Bq/kg. Similarly, in limestone, the activity concentrations range from 0.63±0.09 to 3.91±0.22 Bq/kg for 226Ra, 0.67±0.13 to 2.67±0.26 Bq/kg for 232Th and 57.49±2.60 to 421.39±7.17 Bq/kg for 40K with respective mean of 2.05, 1.59 and 220.02 Bq/kg. Mean specific activities of 226Ra, 232Th and 40K in the four economic minerals were below the world average values of 30, 35 and 400 Bq/kg respectively as stated by the United Nation Scientific Committee on the Effect of Atomic Radiation except calcite that exceeded slightly the value of 40K. Mean absorbed dose computed for dolomite, feldspar, calcite and limestone are 9.99, 7.08, 23.58 and 10.70 nGy/h respectively, which are below the world average of 58 nGy/h. Computed mean annual effective dose equivalent outdoor (occupational) for dolomite, feldspar, calcite and limestone are 0.02, 0.01, 0.04 and 0.02 mSv/y respectively, with corresponding average indoor (residential) values of 0.05, 0.04, 0.12 and 0.05 mSv/y in sequence. Mean external hazard index computed for dolomite, feldspar, calcite and limestone are 0.06, 0.03, 0.12 and 0.05 respectively, which are below unity. Similarly calculated excess lifetime cancer risk for both residential and occupational exposures to dolomite, feldspar, calcite and limestone are (0.06, 0.14, 0.43, 0.21)×10-3 and (0.22, 0.04, 0.13, 0.06)×10-3 respectively. These values agree with the worldwide average value of 0.29×10-3 . The usage of these economic minerals as aggregate of building materials or for any domestic purposes does not pose any risk to the public from the point of radiation protection. Continuous radiological check of the economic minerals is however recommended to always ensure that the radiation doses are as low as reasonably achievable.




FIND OTHER RELATED TOPICS


Related Project Materials

An Evaluation of the Role of Regional Cooperation in Enhancing National Security in Nguru LGA, Yobe State: A Case Study of the Multinational Joint Task Force

Chapter One: Introduction

1.1 Background of the Study...

Read more
The Impact of Corporate Communication on the Effectiveness of Government Policies: A Study of Obi Local Government Area, Nasarawa State

Chapter One: Introduction

1.1 Background of the Study
Government policies play a crucial role in...

Read more
LEADERSHIP AND GOOD GOVERNANCE IN NIGERIA: ISSUES AND PROSPECTS FOR NATIONAL DEVELOPMENT  

ABSTRACT

The phenomenon of leadership and good governance has assumed greater interest in Africa. With the return of democratic governanc...

Read more
THE EFFECT OF TAXATION ON MANUFACTURING FIRMS

ABSTRACT

This research work was carried out to examine the effect of taxation on manufacturing firms. T...

Read more
WORK ENVIRONMENT AND ITS EFFECTS ON EMPLOYEE PERFORMANCE

Abstract

Working environment Matters a lot to employee. For this reason it is of a great importance to improve the work...

Read more
An Evaluation of Financial Management Practices in Healthcare Institutions in Wukari LGA

Background of the Study

Healthcare institutions in Wukari LGA play a critical role in providing essential health services to the local po...

Read more
The Financial Implications of Medical Tourism on Nigerian Hospitals: A Case Study of Lagos State

Background of the Study

Medical tourism, the practice of traveling to another country for medical care, has grown significantly worldwide...

Read more
THE EFFECT OF ORGANIZATIONAL INCENTIVE POLICIES ON WORKER’S PRODUCTIVITY

ABSTRACT

The effect of organizational incentive policies on worker’s productivity. The place of g...

Read more
THE IMPACT OF DIGITAL TRANSFORMATION ON CUSTOMER SATISFACTION

THE IMPACT OF DIGITAL TRANSFORMATION ON CUSTOMER SATISFACTION

This study aims to: (1) analyze the impact of digital transformation on cus...

Read more
Accounting Information System as a Tool for Monitoring Government Expenditure in Hadejia Local Government Area

Background of the Study

Government expenditure monitoring is critical for ensuring that funds allocated...

Read more
Share this page with your friends




whatsapp