RADIOMETRIC ASSAY OF HAZARD INDICES AND EXCESS LIFETIME CANCER RISK DUE TO NATURAL RADIOACTIVITY IN SOIL PROFILE IN OGBA/ EGBEMA/ NDONI LOCAL GOVERNMENT AREA OF RIVERS STATE, NIGERIA
Journal Title: Academic Research International - Year 2013, Vol 4, Issue 5
Abstract
Naturally occurring radio nuclides (226Ra, 232Th and 40K) were measured in soil samples collected from twelve oil fields and their host communities in Ogba/Egbema/Ndoni Local Government Area (ONELGA) of Rivers State using gamma spectroscopy. The mean activity concentration of 226Ra, 232Th and 40K in soil samples from the oil fields is 29.61± 3.03, 17.41± 1.64 and 262.63± 9.73 Bqkg-1 respectively and 19.11± 2.35, 21.26±1.41 and 224.26±11.75 Bqkg-1respectively for samples from host communities. The hazard indices and excess lifetime cancer risk were estimated using standard analytical method with mean values obtained for annual gonadal equivalent dose, annual effective dose equivalent (outdoor and indoor), hazard index (external and internal), excess lifetime cancer risk, and representative gamma index which were respectively 218.49 mSvyr-1, 39.45µSvyr-1, 157.81µSvyr-1, 0.18, 0.232, 0.138 x 10-3 and 0.49 for the host community and, 246.73 mSvyr-1, 43.47µSvyr-1, 173.9 µSvyr-1, 0.202, 0.282, 0.152 x 10-3 and 0.547 for oilfield soil samples. The values when compared with their corresponding world permissible values were found to be below the standard limit for such environment. The soil from the study area provided no excessive exposure for the inhabitants and can be used as building material without posing any radiological threat or harm to the public users.
Authors and Affiliations
G. Avwiri, Egieya M. , Ononugbo P.
Keywords
Related Articles
- EP ID EP105229
- DOI -
- Views 92
- Downloads 0
RELATIONSHIP BETWEEN AGRICULTURE AND GDP GROWTH RATES IN PAKISTAN: AN ECONOMETRIC ANALYSIS (1961-2007)
The present study has been conducted in the year 2008 to make econometric analysis of the relationship between agriculture growth rate and GDP growth rate in Pakistan. Time series data ranging from 1961 to 2007 on the...
RESOURCE MANAGEMENT AND EVALUATION OF COMPETITIVE ADVANTAGE: A CASE STUDY OF EAST JAVA MANUFACTURING COMPANIES
This study attempts to answer some essential issues related to the management of the firm’s resources to create competitive advantage and survival. The following research questions will be explored in this study: 1.What...
EFFECT OF ZINC OXIDE LEVEL AND BLEND RATIO ON VULCANIZATE PROPERTIES OF BLEND OF NATURAL RUBBER AND ACRYLONITRILE-BUTADIENE RUBBER IN THE PRESENCE OF EPOXIDIZED NATURAL RUBBER
Effect of Zinc Oxide level and blend ratio on vulcanizate properties of natural rubber (NR)/acrylonitrile-butadiene rubber (NBR)/epoxidized natural rubber (ENR) blend was studied. NR/NBR/ENR vulcanizates with composition...
Organizational Learning Capabilities (OLC) toward Job Satisfaction: A Conceptual Framework
Organizational learning or organizational learning capability (OLC) is about the ability of one organization to apply the correct and appropriate management practices, its structures as well as the procedures which enhan...
RESEARCH OF INTERNET FINANCE SUPPORT FOR “MASS ENTREPRENEURSHIP AND INNOVATION”
The activities of "mass entrepreneurship and innovation" are important for maintaining a steady economic growth and promoting China's economic transformation. Now the activities present the characteristics of platform sp...