Abstract
Proton-induced X-ray emission (PIXE) method was employed to study the concentration of heavy elements in betel leaves, betel nuts, and mineral lime consumed in Bangladesh. The samples were collected from different parts of Bangladesh and analyzed by the thicktarget external beam technique of the PIXE method. The samples were exposed to the proton beam as 1-mm thick pellets and irradiated with 2.0-MeV protons having 20-nA beam intensity. The concentration of some 15 elements (K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Se, Br, Rb, Sr, and Pb) was measured by comparison with a calibration curve constructed from the NBS orchard leaf standard SRM 1571. The validity of the procedure has been established by comparative measurements of Cu and Zn with atomic absorption spectrophotometry. The significance of the results is discussed in view of their implications in health and disease.
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Tarafdar, S.A., Akhter, S., Kar, S. et al. Multielement proton-induced X-ray emission analysis of betel leaves, betel nuts, and lime. Biol Trace Elem Res 12, 121–131 (1987). https://doi.org/10.1007/BF02796670
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DOI: https://doi.org/10.1007/BF02796670