Tag Archives: Gamma radiation

Evaluation of Natural Radioactivity Content in Groundwater Sources in Communities along Tano Basin, Ghana for Radiological Risk Assessment (Published)

The radionuclide concentrations in all water samples were measured using gamma spectroscopy method. The purpose of this study was to evaluate background radionuclides in groundwater sources in the communities, which border the Tano Basin for the radiological risk assessment. The average values of 226Ra, 228Ra and 40K obtained are in the range of 0.14±0.01 to 1.38±0.22 Bq/L, 0.18±0.01 to 1.41±0.18 Bq/L and 0.46±0.02 to 5.92±0.10 Bq/L respectively. The committed effective dose and excess lifetime cancer risk were calculated for four age brackets. The average total annual effective dose for adults that take groundwater ranged from 1.20E-04 ± 8.70E-06 to 9.50E-04 ± 1.52E-04 mSv/y and that for teenagers, children and babies ranged from 9.04E-04 ± 6.07E-05 to 7.04E-03 ± 1.10E-03 mSv/y, 2.74E-04 ± 1.13E-05 to 2.06E-03 ± 2.13E-04 mSv/y and 1.17E-03 ± 7.21E-05 to 8.84E-03 ± 1.35E-03 mSv/y respectively. The excess lifetime cancer risk in adults ranged from 4.21E-04 ± 3.05E-05 to 3.32E-03 ± 5.32E-04. That for teenagers, children and babies ranged from 7.68E-04 ± 5.16E-05 to 5.98E-03 ± 9.37E-04, 1.65E-04 ± 6.79E-06 to 1.24E-03 ± 1.28E-04 and 5.85E-05 ± 3.61E-06 to 4.42E-04 ± 6.76E-05 respectively. Other parameters of the water samples are in the ranges of pH: 4.4 – 7.2, Temperature/OC: 29.1 – 32.9, Conductivity/μScm-1:51.4 – 420, Salinity: 0.0 – 0.1 and Total Dissolved Solids (TDS)/mg/L: 31 – 252.

Keywords: Excess Lifetime Cancer Risk, Gamma radiation, Health Hazard, Radioactivity

Possible Anti-Hemolytic and Antioxidnt Role Of Ethanolic Extract Of Coriander On Irradiated Rats (Published)

Foods wealthy in antioxidants play an essential role in the prevention of diseases.Coriander (Coriandrum sativum L.), a conventional annual herb selected for assessing antihemolytic and antioxidant properties. To study the effectiveness of Coriandrum sativum as an antihemolytic and antioxidant agent, the oxidative stress was induced in rats by gamma radiation exposure with 4 Gy shot dose after 14 days oral administration of coriander extract (600 mg/kg b.wt). Exposing rats with 4 Gy gamma rays was significantly decreased RBCs, WBCs and Platelets counts. But the percentage of segmented cells as well as the activity of serum aspartate transaminase (AST) and endothline 1 (ET1) level was significantly increased after radiation exposure. Interestingly, among the tested parameter, the ethyl extract of coriander showed marked improvement in both haematological and biochemical changes. In conclusion, addition of coriander to food will increase the antioxidant content and may have potential as a natural antioxidant and thus inhibit unwanted oxidation processes.

Keywords: Antihemolytic, Antioxidant, Antioxidants, Coriandrum sativum L., Flavonoids, Gamma radiation