Figure 2

PIXE analysis of blood samples from (a) control subjects and brick kiln occupants (b) using 3 MeV proton energy at the National Centre for Physics, Islamabad, using a 5 MV tandem Accelerator. Note the difference between the peaks of certain heavy metals that are absent in control data. The concentration of titanium (Ti), chromium (Cr), nickel (Ni), and gallium (Ga) are most evident in brick kiln emission exposed group.