Evaluation of Toyserkan City Water Contamination, due to the existence of Radon, and Estimation of the annual effective dose
Journal Title: JOURNAL OF ADVANCES IN MATHEMATICS - Year 2013, Vol 2, Issue 1
Abstract
The gas of 222 Rn is one of the natural radioactivesources which is the decay product of 226 Ra from 238U decay chain. Based on the latest information presented bythe United Nations Scientific committee in the field of the effects of atomic radiations, the respiration of Radon and its daughters (Plutonium, Bismuth and Lead), are one of the most important factors in human radiation inhalation, since Radon and its daughters account for approximately 1.2 msv of the total of 2.4 msv (mili Sievert) annual effective dose of natural radioactive sources produced. The fluctuation in the levels of Radon resolved in water, due to the hazards caused by the emitted radiations, is considerable; because studies show that longterm exposure to Radon increases the chances of lung cancer. The amount of radon in underground waters is more than that of surface waters. If water is exposed to free air, especially when it's mixed as well, a considerable amount of its radon content is released. In this paper, Radon concentration (Bq/L) in waters of the wells and springs located in Toyserkan, is measured using Lucas chamber technique by means of a light weighted and transportable machine namelyPRASSI (SFLENAmod5s). The results showed that the radon density in four measured samples in the waters of this region exceed 10 Bq/L, the allowable amount determined by the US Environmental Protection Agency (USEPA). For the cases where the concentration is high, is it proposed that drinkable water be preserved in open pools or at least waterfalls be used in order to agitate the water to release itsradon content. It is better to install a system for settling and exposing the water to air so that Radon and its decay products are dispersed and the contamination problem is solved.
Authors and Affiliations
Hamid Reza Samadi
Keywords
Related Articles
- EP ID EP651180
- DOI 10.24297/jam.v2i1.6540
- Views 211
- Downloads 0
Information Measures and some Distribution Approximations.
The Fisher and Kullback- Liebler information measures were calculated from the approximation of a binomial distribution by both the Poisson and the normal distributions and are applied to the approximation of a Poisson d...
On Full k-ideals of a Ternary Semiring
In this paper, we generalize the concept of the full -ideals of a semiring to ternary semiring and prove that the set of zeroids annihilator of a right ternary semimodule, and the Jacobson radical of a ternary semiring a...
REGIONAL GRADIENT STRATEGIC SENSORS CHARACTERIZATIONS
In the present paper, the characterizations of regional gradient strategic sensors notions have been given for different cases of regional gradient observability. The results obtained are applied to two dimensional linea...
Consistency of least squares estimators of AR(2) Model
In this paper, ordinary least squares (OLS) method will be used to estimate the parameters of the auto-regressive model without constant of order two. Moreover, the convergence in probability (the consistency property) o...
Fixed point theorems of nonlinear contractions on p-quasi-cone metric space
In this paper we have proved some results of fixed point on p-quasi cone metric spaces. The p-quasi cone metric space is a generalization cone metric space. Kiany and Amini-Harandi[1] have given a generalization of...