(A)Cinnabar As the Contamination Source

(a)Cinnabar as the contamination source

Factor / Indicator / % Hg volatilized / % Hg leached / % Hg in top 10 cm of soil
Elementary effect / µ / µ* / σ / µ / µ* / σ / µ / µ* / σ
X1 / Initial Hg concentration in soil / 0 / 0 / 0 / 2.735 / 2.804 / 6.203 / -2.711 / 2.711 / 2.735
X2 / Cinnabar dissolution rate / 0 / 0 / 0 / −6.383 / 6.383 / 13.198 / 1.153 / 1.153 / −6.383
X3 / HgII reduction rate / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
X4 / DOM (in rainwater boundary solution) / 0 / 0 / 0 / −14.650 / 14.650 / 26.693 / 6.994 / 6.994 / −14.650
X5 / Exchange capacity of HA and FA (SOM top 30cm) / 0 / 0 / 0 / 5.399 / 5.399 / 11.980 / −0.001 / < 0.001 / 5.399
X6 / Exchange capacity of thiols (SOM top 30cm) / 0 / 0 / 0 / 0.067 / 0.067 / 0.149 / −0.003 / 0.003 / 0.067
X7 / log k complexation Hg-DOM (HA and FA) / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
X8 / log k complexation Hg-DOM (thiols) / 0 / 0 / 0 / −2.533 / 2.533 / 3.343 / 2.250 / 2.250 / −2.533
X9 / log k sorption Hg-SOM (HA and FA) / 0 / 0 / 0 / 12.855 / 12.855 / 14.277 / −1.142 / 1.142 / 12.855
X10 / log k sorption Hg-SOM (thiols) / 0 / 0 / 0 / 0.385 / 0.385 / 0.562 / −0.493 / 0.493 / 0.385
X11 / Sorption coeff. DOM to soil minerals / 0 / 0 / 0 / −0.067 / 0.067 / 0.071 / 0 / 0 / −0.067
X12 / Max. adsorption capacity of DOM to minerals / 0 / 0 / 0 / −0.060 / 0.060 / 0.128 / 0 / 0 / −0.060
X13 / NAPL dissolution rate / - / - / - / - / - / - / - / - / -

(b)Hg NAPL as the contamination source

Factor / Indicator / % Hg volatilized / % Hg leached / % Hg in top 10 cm of soil
Elementary effect / µ / µ* / σ / µ / µ* / σ / µ / µ* / σ
X1 / Initial Hg concentration in soil / 0.001 / 0.001 / 0.001 / −3.081 / 29.371 / 38.720 / 16.948 / 27.782 / 43.675
X2 / Cinnabar dissolution rate / - / - / - / - / - / - / - / - / -
X3 / HgII reduction rate / 0.001 / 0.001 / 0.002 / 0 / 0 / 0 / 0 / 0 / 0
X4 / DOM (in rainwater boundary solution) / < 0.001 / < 0.001 / < 0.001 / −5.461 / 5.461 / 3.982 / 4.476 / 8.443 / 10.254
X5 / Exchange capacity of HA and FA (SOM top 30cm) / 0 / < 0.001 / < 0.001 / 2.465 / 2.602 / 5.594 / −3.718 / 3.718 / 6.747
X6 / Exchange capacity of thiols (SOM top 30cm) / −0.001 / 0 / 0.001 / 8.712 / 8.712 / 19.406 / −6.380 / 6.380 / 14.266
X7 / log k complexation Hg-DOM (HA and FA) / 0 / 0 / 0 / −0.003 / 0.003 / 0.008 / 0 / 0 / 0
X8 / log k complexation Hg-DOM (thiols) / < 0.001 / < 0.001 / < 0.001 / −3.976 / 4.016 / 5.575 / 4.988 / 5.068 / 6.083
X9 / log k sorption Hg-SOM (HA and FA) / −0.001 / 0.001 / 0.001 / 88.505 / 88.505 / 32.841 / −58.841 / 58.841 / 47.852
X10 / log k sorption Hg-SOM (thiols) / 0 / 0 / 0 / 0.089 / 0.176 / 0.255 / −1.092 / 1.092 / 0.877
X11 / Sorption coeff. DOM to soil minerals / 0 / 0 / < 0.001 / −1.564 / 1.697 / 3.611 / −0.001 / < 0.001 / < 0.001
X12 / Max. adsorption capacity of DOM to minerals / 0 / 0 / 0 / −1.400 / 1.400 / 2.189 / 1.370 / 1.370 / 3.063
X13 / NAPL dissolution rate / < 0.001 / < 0.001 / < 0.001 / −6.017 / 6.017 / 11.027 / 0.030 / 0.030 / 0.067

(c)HgCl2(aq) as the contamination source

Factor / Indicator / % Hg volatilized / % Hg leached / % Hg in top 10 cm of soil
Elementary effect / µ / µ* / σ / µ / µ* / σ / µ / µ* / σ
X1 / Initial Hg concentration in soil / −0.007 / 0.015 / 0.029 / −25.873 / 29.941 / 38.141 / 36.280 / 36.280 / 51.539
X2 / Cinnabar dissolution rate / - / - / - / - / - / - / - / - / -
X3 / HgII reduction rate / 0.030 / 0.030 / 0.015 / −0.040 / 0.040 / 0.072 / 0 / 0 / 0
X4 / DOM (in rainwater boundary solution) / 0.002 / 0.002 / 0.003 / −11.701 / 11.701 / 17.232 / 17.728 / 17.728 / 30.056
X5 / Exchange capacity of HA and FA (SOM top 30cm) / < 0.001 / 0.001 / 0.002 / 6.564 / 6.564 / 8.395 / −2.767 / 2.767 / 5.644
X6 / Exchange capacity of thiols (SOM top 30cm) / −0.001 / 0.001 / 0.002 / 2.727 / 2.727 / 2.819 / −6.267 / 6.267 / 7.192
X7 / log k complexation Hg-DOM (HA and FA) / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
X8 / log k complexation Hg-DOM (thiols) / 0.001 / 0.001 / 0.001 / −4.955 / 4.955 / 7.139 / 4.853 / 4.853 / 7.104
X9 / log k sorption Hg-SOM (HA and FA) / −0.017 / 0.017 / 0.021 / 82.756 / 82.756 / 70.040 / −96.268 / 96.268 / 62.708
X10 / log k sorption Hg-SOM (thiols) / 0 / 0 / 0 / 0.197 / 0.197 / 0.440 / −1.163 / 1.163 / 2.161
X11 / Sorption coeff. DOM to soil minerals / < 0.001 / < 0.001 / < 0.001 / −0.033 / 0.033 / 0.075 / 0 / 0 / 0
X12 / Max. adsorption capacity of DOM to minerals / 0 / 0 / 0 / −0.007 / 0.007 / 0.015 / < 0.001 / < 0.001 / 0.001
X13 / NAPL dissolution rate / - / - / - / - / - / - / - / - / -