Elemental Concentration of commonly used Clay Potteries from some selected locations in Niger State of Nigeria using Instrumental Neutron Activation Analysis

R. L Njinga, U.U Elele, I.O.B Ewa
2014 IOSR Journal of Environmental Science Toxicology and Food Technology  
We appraised in this study the public awareness of the imminent danger due to elemental concentration of the resident in Lapai local government areas and Tatiko, a village under Paikoro local government areas in Niger State, Nigeria about the constant usage of clay potteries in cooking, storage of drinking water, eating and drinking of water. Instrumental Neutron Activation Analysis (INAA) was employed and two irradiation regimes developed based on short lived and long lived radionuclides. The
more » ... radionuclides. The Nigerian Research Reactor-1 was employed and the irradiation time set to five minutes and six hours at operating fluxes of 2.5 × 10 11 n/cm 2 /sec and 5.0 × 10 11 n/cm 2 /sec respectively for the two regimes developed. The gamma-rays from the activated samples were measured using the HPGe detector and twenty four elements; Na, Ta were obtained quantitatively. Arsenic (As) and chromium (Cr) known to be heavy metals fall in the range of 0.64 50 ± 0.16 ppm -1.63 50 ± 0.06 ppm and 29.20 50 ± 0.36 ppm -74.80 50 ± 0.23 ppm respectively. The concentrations of La, Sm, Co, Ba, and Cr also known to be toxic were obtained within the range of 56.20 ± 21 -102.00 ± 43 ppm, 8.14 ± 0.32 -13.10 ± 0.2 ppm, 6.22 ± 0.22 -21.50 ± 0.26 ppm, 218.00 ± 28 -711.00 ± 41 ppm and 29.20 ± 23 -80.80 ± 21 ppm respectively in all the ten composite clay potteries samples. Furthermore the concentrations of Al and Ti in the samples were obtained at percentage levels in the range of 7.605 ± 0.006 % -10.03 50 ± 0.026 % and 0.40 ± 0.03 % -1.02 ± 0.07 % respectively. These detected metals may dissolve from the clay potteries onto the food during cooking, eating, drinking of water or storage of food/water and will result to serious health consequence.
doi:10.9790/2402-081111121 fatcat:kfi44zencvh4jcgbcjvdaqjyma