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  • 1 The University of Burdwan Department of Chemistry Golapbag, Burdwan 713 104 India
  • 2 Saha Institute of Nuclear Physics Chemical Sciences Division 1/AF Bidhannagar Kolkata 700 064 India
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Binding ability of mercury, thallium, lead and bismuth with Erythrina variegata seed protein have been investigated using tracer packet technique. Due to the lack of standard methods, inter-comparisons have been made among three different approaches, like trichloroacetic acid (TCA) precipitation, isoelectric precipitation and dialysis of protein after incubation with the metals. Good agreement was observed for all the cases except that of lead.