Abstract
A study of the trace element profile of some marine fish from Bangladesh by particle-induced X-ray emission (PIXE) analysis is reported. Using 40 μC irradiation of thick targets in air with 2.0 MeV protons, 12 elements (K, Ca, Ti, Mn, Fe, Ni, Cu, Zn, As, Se, Rb and Sr) were detected in five species of fish and prawns commonly consumed in Bangladesh. The concentration of the elements was determined by comparison with an X-ray yield curve obtained from the NBS Bovine Liver Standard, SRM 1577. In most cases the results agreed with other published data on fish from other marine environments. Dietary implications of the results are discussed. Apart from the problem of detection limits of the method, for example 0.4 μg g − for Hg and 0.5 μg g − for Pb (fresh weight) with an 88 mg cm −2 thick plastic absorber, the study indicates that the biota in the Bay of Bengal in the region of Bangladesh is not contaminated with the metals determined.
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