CR- 39 (4.794 19.509) kBq/m 3 (8.241 19.508) kBq/m 3 (1.015 1.338) ppm 1.176 ppm . 100m 50% 2ppm
CR- 39
(4.794
19.509)
kBq/m3 (8.241
19.508) kBq/m3
(1.015
1.338) ppm
1.176 ppm .100m
50%
2ppm
Determination of Radon and Uranium Concentration in some
Affected Areas in Mosul City
Asst. Lect. Hala Dyaa Kharrufa Department of Science
College of Basic Education / Mosul University
Abstract: This study is concerned with the concentration of radon and uranium in
three damaged areas by the war inside Mosul city which belong to Nineveh governorate in the north of Iraq in comparison with three nearby areas so the possibility of dangerous effect of radiation on human being can be studied by the use of nuclear track detector CR-39. The result show that the concentration of radon in damaged areas was ranged between (4.794
19.509) kBq/m3 ,while in the nearby areas the concentration was (8.241
19.508) kBq/m3. Regarding the Uranium concentration in the directly damaged areas which have been selected it was found to be ranged between (1.015
1.338) ppm with an average of 1.176 ppm, while it s concentration in nearby areas 100 m was 50% less than the damaged ones. However, the concentration may decrease more away 100m as moving further away for the damaged center and this means that there is a pollution with depleted uranium in the bombed areas since the allowed level according to the international nuclear agency was 2ppm.
[1] 222Rn 1899R.B.Owens
E.Rutherford
9.7 Kg/m3 - 61.8oC)
71oC)
[2]
[3] U- 238
222Rn226Ra3.825 day
5.49 Mev [4]
U238
(3- 4 ppm)
1600 year
[5] 75%
50%
[6]
40 m
1000222Rn [7]
[8]
[8,9,10]
[11,12]
NCCI
20112007
2008
[13]
100 m
21 days
3 cm
Rn220 7.2
cm
CR- 39
71 days238U
(1.3×1.3 cm240 gMettler PC
2000- 92.10- 2 g
(NaOH)6.25 M 70?±1 C
.
(Swift)
(400X)
Track/cm2[14]
..(1)
Ca=
C90 kBq/m3 t48
hr 96768 Tr/cm2
t71 day
(The School of Physics and Space Research at the University of Birmingham, England)[15].
CWBq/m3
. (2) L
thCC Rna
w
CaBq/m3 Rn
0.1814/day h
7.2 cmL1.2 cm
ABq
.(3) ARn = CwV
V = r2L .(4)
V m3 r= 3 cm
NRn
ARn = Rn NRn . (5)
NU U = NRn Rn .. ..(6)
U4.8833×10- 18 s- 1WU(gm)
WU = . . ..(7)
AU238UNav6.022 ×1023
mole- 1ppm
CU(ppm)= = ..(8)
Ws
1
100 m1
1
A1
A2
B1
B2
C1
C2
1
(2)
(Tr/cm2)
Background(165 Tr/cm2)2
(14.794
19.509) kBq/m3
8.241
19.508) kBq/m3
B2
2
[16]
1991.( 77 - 178) kBq/ m3
(6- 50) kBq/m3[17] Zunic et al.
Vukotich et al.[18] 10 - 90) kBq/m3
ICRP)
(200
800) Bq/m3
]16[
20- 10
NCCI
2011[13]
ppm(0.2- 0.3)[10]
2
(Tr/cm2)
Ca (KBq/m3) Cs (KBq/m3)
A1 9345.704 0.263 18.920
A2 4071.006 0.106 8.241
B1 9636.563 0.271 19.509
B2 9635.813 0.252 19.508
C1 7307.612 0.205 14.794
C2 4254.063 0.111 8.612
(3)
.ppm34
0.565
1.338) ppm
B1 , B2
2ppm[19]
[16](8.17- 19.17) ppm
[20] Buzby
[10]
(1.25,
0.31, 0.2) ppm
[21] 238U1.59 ppm.
5
2000
2017[22]6
3
ARn (Bq) Nu ×1016 (atom) Wu ×10- 6 (g) Cu (ppm)
A1 0.641 13.139 51.929 1.298
A2 0.279 5.723 22.620 0.565
B1 0.661 13.548 53.546 1.338
B2 0.661 13.547 53.541 1.338
C1 0.501 10.274 40.605 1.015
C2 0.292 5.980 23.637 0.590
3Rn-222
4U-238
A A B B C C
Conse
ntr
ati
on
of U
-238
ppm
05
10152025
A1 A2 B1 B2 C1 C2Cons
entr
atio
n of
Rn-
222(
KBq/
M3 )
6
[15]
5
-
10
-
-
-
-
-
-
CR- 3915B
3- Bruzzi L., Mele R. and Padoani F.(1992) , Evalution of gamma and alpha dose due to natural radioactivity of building materials Prot. 12.pp (67-76). 4- Maged A.F., Tsuruta Takao and Durrani S.A. (1993),"Experimental and theoretical considerations on the calibration factor K between a-activity".
- (1994)
-
-
-
-
9- AL-Jundi J. and Haninger T. (2003),"Radon-222 concentration in houses of Russaifa city in Jordan". Abhath Al-Yarmouk:Basic Sci. and Eng. Vol 12, no.1,pp.181-190.
-
11- Khan A., Sharmak K.C., Vershney A.K., (1988). "Radon Estimation in Some India Tobacco,Tea, Tooth Powder Using CR-39 Nuclear Track Detector". Radiat. Environ. Biophys., 27, 99. pp. 233-237.
-
CR- 39
13- NGO COORDINATION COMMITTEE FOR IRAQ.NCCI Brief:Enviromental Contaminants from War Remnants in Iraq, June,(2011). 14- Al-Bataina B.A., Ismail A.M.,Kullab M.K.,Abumurad K.M.and Mustafa H. (1997), "Radon Measurement in different Types of natural waters in Jordan", Radiat. Meas.,Vol.28, no.(1-6) ,pp.591-594. 15- Cross F.T.; Harley N.H. and Hofman W. (1985), "Helth effects and Risks from Rn-222 in drinking water". Health physics, 48, pp.649-670.
-
SSNTD sHPGe
17- uni Z.S., Kozak K., Ciotoli G., Ramola R.C., Kochowska E.Uji P.,
elikovi I.,Mazur J., Janik M.,Demajo A., Birovljev A., Bochicchio F., Yarmoshenko I.V.Kryeziu D.and Olko P. (2007), A campaign of discrete radon concentration measurements in soil of Ni ka Banja town, Serbia . Radiat. Meas., Vol.42, no. 10, pp.1696-1702, abs., www. Sciencedirect.com/ science (Internet). 18- Vukotich P.,Uvaro V.V., Antovich N. and Dapchevich S. (2002), Radon consentrations in soil of city of Padgorica, Montenegro , Geofisica International, Vol.41, no.3, pp.277-280. 19- International Atomic Energy Agency, Depleted Uranium available, www.iaea.org/newscenter/features/du/du_qaa.shtml. 20- Buzby C. (2001).
Hot News from Iraq . LLRC J. Radioactive Times. Vol.4 No.2
- (2004)
HPGeCR- 39
-
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