Green Global
Foundation   Journal
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ELEMENTAL ANALYSIS OF ARABLE SOIL BY PROTON INDUCED GAMMA EMISSION (PIGE) TECHNIQUE (Pages : 34 - 39)

Proton Induced Gamma Emission (PIGE) technique was employed for analyzing low Z elements (Na, Mg and F etc.) in arable soil. The soil samples were collected from the arable fields of Norshindi, Sylhet and Chittagong districts. Proton beam from the horizontal type 3 MeV Van de Graff accelerator at the AECD was used for irradiating the soil samples. The proton beam of energy 2.5 MeV was used with a beam current of 20 nA. A HPGe detector along with the associated equipment, such as pre-amplifier, amplifier, PC, MCA was used for the detection of gamma rays from the PIGE reactions in the irradiate soil samples. The PIGE reactions 19 F(p, p?, ?) 19 F, 25 Mg(p, p?, ?) 25 Mg and 23 Na(p, p?, ?) 23 Na were used for the determination of the yields and hence the concentrations and sensitivities for the elements Na, Mg, and F. The concentrations were obtained at the ppm level by comparing with the certified values of the IAEA standard soil –7. The experimental results were compared with the optimum concentrations of the above elements in arable soil. Mg and Na were found at a slightly toxic level in some soil samples and F was found rather at a high concentration in some samples. Download