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concentrations in soil, it includes locations, track density in (track/mm’) for different study areas in unit (ppm). Uranium concentrations in groundwater were ranged from (1.617782869+0.03) gl ! in (S10) sample to (5.079235843+0.137827) wel ' in ($5) sample, while in soil from (0.093558+0.000938) ppm in (S10) sample to (0.184325+0.017511) ppm in (S8) sample. The total average of uranium concentrations were in groundwater (3.07665586) pgl' and in soil (0.153912)ppm, all the high concentrations were found at the soil surface as showing in Table(3) ,this is because that the radioactive content is laying on the surface of the soil and effecting by irrigation and rain fall the radioactive nucleus run away to the depths. The uranium content in soils samples are less than the allowed limit (11.7 ppm) from UNSCEAR [11] while in groundwater samples were found to have uranium concentration below the safe limit of 15 ug according to WHO [12].

Table 2 concentrations in soil, it includes locations, track density in (track/mm’) for different study areas in unit (ppm). Uranium concentrations in groundwater were ranged from (1.617782869+0.03) gl ! in (S10) sample to (5.079235843+0.137827) wel ' in ($5) sample, while in soil from (0.093558+0.000938) ppm in (S10) sample to (0.184325+0.017511) ppm in (S8) sample. The total average of uranium concentrations were in groundwater (3.07665586) pgl' and in soil (0.153912)ppm, all the high concentrations were found at the soil surface as showing in Table(3) ,this is because that the radioactive content is laying on the surface of the soil and effecting by irrigation and rain fall the radioactive nucleus run away to the depths. The uranium content in soils samples are less than the allowed limit (11.7 ppm) from UNSCEAR [11] while in groundwater samples were found to have uranium concentration below the safe limit of 15 ug according to WHO [12].

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aia ‘sia aai ae emia meme aie uranium dosimeter techniques were used and long period in groundwater and soil samples measurements, the measurements were made with the solid state nuclear track detector (SSNTD) technique. a schematic diagram was shown in Fig.(2). Each cup container was 19 cm height and 7 cm in diameter and contains (1x1) cm square of CR-39 nuclear track detector fixed with double sided adhesive tape to the bottom of the cup with its sensitive side upward. The design of the chamber measures that the aerosol particles and radon decay products are deposited from outside. The CR-39 detectors were capable of detecting alpha particles of all energies emitted from radon and its daughters. Some of alpha particles reach the detector and leave tracks, and the number of tracks is proportional to the average radon concentration. The exposed detectors were collected after approximately five months of exposure and then chemical etching simultaneously at a constant time 7 hour and NaOH for 6.25 N at temperature 70° C. An optical microscope with magnification of 10x40 was used to count the number of tracks in each detector.
aia ‘sia aai ae emia meme aie uranium dosimeter techniques were used and long period in groundwater and soil samples measurements, the measurements were made with the solid state nuclear track detector (SSNTD) technique. a schematic diagram was shown in Fig.(2). Each cup container was 19 cm height and 7 cm in diameter and contains (1x1) cm square of CR-39 nuclear track detector fixed with double sided adhesive tape to the bottom of the cup with its sensitive side upward. The design of the chamber measures that the aerosol particles and radon decay products are deposited from outside. The CR-39 detectors were capable of detecting alpha particles of all energies emitted from radon and its daughters. Some of alpha particles reach the detector and leave tracks, and the number of tracks is proportional to the average radon concentration. The exposed detectors were collected after approximately five months of exposure and then chemical etching simultaneously at a constant time 7 hour and NaOH for 6.25 N at temperature 70° C. An optical microscope with magnification of 10x40 was used to count the number of tracks in each detector.
Table (1): The sites of measurement in studied area for taking samples Experimental techniques
Table (1): The sites of measurement in studied area for taking samples Experimental techniques
Uranium Concentrations measurement for Ground Water and Soil Samples in Al-Najaf- Iraq
Uranium Concentrations measurement for Ground Water and Soil Samples in Al-Najaf- Iraq
Fig.(3) The relation between track density and uranium concentration (yg.l°) for standard geological groundwater samples using (CR-39) track detector.[10]
Fig.(3) The relation between track density and uranium concentration (yg.l°) for standard geological groundwater samples using (CR-39) track detector.[10]
Fig.(4) The relation between track density and uranium concentration (ppm) for standard geological soil samples using (CR-39) track detector.[10]
Fig.(4) The relation between track density and uranium concentration (ppm) for standard geological soil samples using (CR-39) track detector.[10]
Table(3) Uranium concentrations in soil samples of Al-Najaf holy city
Table(3) Uranium concentrations in soil samples of Al-Najaf holy city
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