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Natural Radionuclides Monitoring in Tigris River Basin Water by Using Liquid Scintillation Technique
| Content Provider | Semantic Scholar |
|---|---|
| Author | Waleed, Mushin Al-Badrani, Mohammed |
| Copyright Year | 2009 |
| Abstract | The determination of radium 226 Ra and/or uranium 238 U + 234 U concentrations in drinking waters is useful in a wide range of environmental studies. The measurement made just after chemical separation of radium and uranium. In this work, a lowbackground liquid scintillation cocktail was used to determine simultaneously 226 Ra and uranium (total) activities in natural water samples. The disadvantages of liquid scintillation Counting are that the procedures are very simple and cheap. Drinking water samples are taken from 20 tap water and 15 positions at different locations of Tigris river path and its inferiors in Mosul city. Where collecting 2000 ml water for every Sample and the preparation involved filtration and increases concentration by evaporation. After that the radioactive isotopes isolating by chemical separation then, 3 ml of the sample were mixed with 15 ml of liquid scintillation cocktail was added to the water in each vial. These samples were stored for 1 month before counting in order to ensure secular equilibrium between radium and its daughters. Each sample was counted for 200 minutes. Radium activity was determined by using energy spectrum and standard calibration curve obtained from standard liquid radium, and uranium (total) activity was obtained from radium subtraction of the alpha spectrum. The results showed that radium concentrations in the water samples were ranged from 9 Bq m -3 to about 64 Bq m -3 , and the uranium concentrations ranges of 16 Bq m -3 ‐ 187 Bq m -3 . We found that the radium concentrations were highly dependent on the type of geological rock aquifers near projects of tap-water. We also observed Fluctuations of the measured data during periods of heavy rain events, while showed increasing concentrations in all water samples in heavy rain days. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.iwtc.info/2009_pdf/4-4.pdf |
| Alternate Webpage(s) | http://iwtc.info/wp-content/uploads/2010/02/4-4.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
