الرئيسية / الفعاليات العلمية / Comparative study between active and passive techniques for measuring radon concentrations in groundwater of Al-Najaf city, Iraq

Comparative study between active and passive techniques for measuring radon concentrations in groundwater of Al-Najaf city, Iraq

Ali AbidAbojassim
University of Kufa, Faculty of Science, Department of Physics, Najaf, Iraq
ARTICLE INFO
Keywords
Radon concentrations
Groundwater
RAD-7
CR-39 and Al-Najaf
ABSTRACT
In this work, Radon (
222Rn) concentrations in groundwater, were measured Al- Najaf city, using the RAD-7 radon
monitoring system of Durridge company the USA and CR-39 detector. Each location was determined on the map
by using GIS program. The annual effective dose for all samples of groundwater was calculated by equations depending on the UNSCEAR organization.It is found that the average of the radon concentrations in groundwater
samples using RAD-7 were varied from (174.5 ± 24.242 Bq/m3
) to (2000.5 ± 165.8 Bq/m3
), but using CR-39
varied from (179.101 ± 55.286 Bq/m3
) to (557.772 ± 166.546 Bq/m3
). Also, the results showed that annual
effective dose in all groundwater samples was lower than the permissible limit of (1 mSv) recommended by ICRP
1993. The correlation of radon concentrations in present study using active technique (RAD-7) and passive technique (CR-39) is very good significant showing a linear correlation coefficient of (0.80). Certainly, this study was
conducted to provide a health-oriented radon assessment of Al-Najaf cities, address long term management goals,
especially from the environmental point of view. The results provide a framework for future studies that should
include a large and broader survey of radon concentration in Iraq.

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