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Table 3

Estimated germination parameter of Oltan using Weibull and Hyperbolastic models.

Cadmium (ppm) Weibull Hyperbolastic I Hyperbolastic II Hyperbolastic III




k d L β θ β θ β θ arcsinh(t)
0 14.6 ± 3.2 0.90 ± 0.19 15.6 ± 0.5 0.085 ± 0.02 6.4 × 10−1 ± 0.23 0.36 ± 0.10 0.70 ± 0.09 2.0 × 10−2 ± 2.0 × 10−3 −0.026 ± 2.33 1.31 ± 1.1
100 22.1 ± 4.5 0.94 ± 0.22 18.8 ± 0.9 0.058 ± 0.01 7.7 × 10−1 ± 0.18 0.40 ± 0.10 0.72 ± 0.08 2.5 × 10−2 ± 1.7 × 10−2 −0.026 ± 0.34 1.17 ± 1.3
200 66.9 ± 10.5 1.71 ± 0.45 43.2 ± 2.5 0.049 ± 0.01 1.5 × 10−1 ± 0.15 0.11 ± 0.04 0.85 ± 0.11 9.2 × 10−2 ± 1.1 × 10−2 −0.026 ± 0.25 1.24 ± 2.4
400 16.8 ± 2.2 5.78 ± 0.76 54.4 ± 3.2 0.048 ± 0.04 1.3 × 10−11 ± 0.19 0.00 ± 0.00 2.74 ± 0.97 4.0 × 10−4 ± 2.3 × 10−2 −0.026 ± 0.04 1.93 ± 1.3
600 5.4 ± 5.3 3.13 ± 0.31 59.9 ± 5.6 0.008 ± 0.15 1.2 × 10−11 ± 0.35 −0.05 ± 0.9 0.83 ± 4.80 4.8 × 10−9 ± 2.7 × 10−8 −0.026 ± 0.02 4.57 ± 3.3
800 1.9 ± 0.8 1.66 ± 0.73 54.3 ± 0.7 −0.014 ± 0.0 1.6 × 10−16 ± 0.00 −0.09 ± 0.0 0.48 ± 0.00 −0.026 ± 0.00 5.04 ± 0.0

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