Table 4: Percentage of elements detected and Ca/P ratio in male and female dugong tusks.

From: Elemental classification of the tusks of dugong (Dugong dugong) by HH-XRF analysis and comparison with other species

EleMaleFemalep-valueEle.MaleFemalep-value
Al0.125 ± 0.0073.00 ± 0.2010.157Cu0.002 ± 0.0000.008 ± 0.0120.696
Si1.2226 ± 1.2891.033 ± 1.2290.257Zn0.040 ± 0.0150.041 ± 0.0120.544
P8.331 ± 1.7537.849 ± 1.6680.070Zr0.013 ± 0.0020.014 ± 0.0020.733
S0.355 ± 0.4340.289 ± 0.4080.964Ag0.019 ± 0.0030.017 ± 0.0040.029
Ca23.990 ± 3.69023.161 ± 3.2300.064Cd0.023 ± 0.0060.022 ± 0.0050.389
Ti0.057 ± 0.0520.057 ± 0.0370.852Sn0.026 ± 0.0070.026 ± 0.0060.337
V0.018 ± 0.0040.018 ± 0.0040.820Sb0.035 ± 0.0090.033 ± 0.0090.173
Cr0.016 ± 0.0270.010 ± 0.0020.092W0.004 ± 0.0010.004 ± 0.0011.000
Mn0.015 ± 0.0320.009 ± 0.0020.265Pb0.001 ± 0.0000.001 ± 0.0000.166
Fe0.038 ± 0.0310.039 ± 0.0280.282LE65.778 ± 5.54367.376 ± 5.1980.030
Ni0.02 ± 0.0010.002 ± 0.0010.801Ca/P2.939 ± 0.4053.017 ± 0.4320.259
  1. Bold numbers indicate significantly higher values. Al = aluminum, Si = silicon, P = phosphorus, S = sulfur, Ca = calcium, Ti = titanium, V = vanadium, Cr = chromium, Mn = manganese, Fe = iron, Ni = nickel, Cu = copper, Zn = zinc, Zr = zirconium, Ag = silver, Cd = cadmium, Sn = tin, Sb = antimony, W = tungsten, Pb = lead, LE = light elements.