Effects of experimental CO2 leakage on solubility and transport of seven trace metals in seawater and sediment.
Murat V. Ardelan, Eiliv Steinnes, Syverin Lierhagen and Sven Ove Linde
Supporting information Figure S1
Figure S2 Figure S3 Figure S4 Figure S5 Figure S6 Figure S7 Figure S8
pH, TIC, Tot. Alk and pCO2
pH and total alkalinity (Talk) were measured regularly with a combined glass electrode with an Ag/AgCl reference electrode (Radiometer), and partial pressure /fugacity of CO2 (pCO2), and total inorganic carbon (TIC) were calculated based on the measurements of pHand total alkalinity (Öztürk et al, 2003). The pH electrode was calibrated using NBS buffer solutions at 6 °C. In order to convert measured pH (pHNBS) to pHtotal, the apparent activity coefficient of H+ (fH+) was determined by four-point titration of 50 ml seawater by 15 ml standard acid with normality in the range of 0.008–0.014N HCl. Partial pressure /fugacity of CO2 (PCO2), TIC was calculated after conversion of pHNBS to pHtotal (Öztürk et al, 2003).
References
1. Öztürk, M., Vadstein, O., and Sakshaug, E. 2003. The effects of enhanced
phytoplankton production on iron speciation and removal in mesocosm phases in a landlocked basin of Hopavågen, Norway. Marine Chemistry 84:3-17.
CO2 Control
6 6.5 7 7.5 8
0 2 4 6 8 10 12 14 16 Time (days)
pH
6.0 6.5 7.0 7.5 8.0 0 2 4Time (days)6 8 10 12
b
2 2.1 2.2 2.3 2.4 2.5 2.6
0 2 4 6 8 10 12 14 16
Total Alkalinity (mM)
c
2 2.1 2.2 2.3 2.4 2.5 2.6
0 2 4 6 8 10 12
d
2 2.5 3 3.5
0 2 4 6 8 10 12 14 16
TIC (mM)
e 2
2.5 3 3.5
0 2 4 6 8 10 12 f
0 4000 8000 12000 16000 20000
0 2 4 6 8 10 12 14 16 Time (days)
pCO2 (µatm)
g
0 4000 8000 12000 16000 20000
0 2 4 6 8 10 12
Time (days) h
Phase 1 Phase 2
a
03 58
2 4 6 9 0.00.5 1.01.5
Control CO2
2.2 0.8 2.2 0.47 2.2
0.47 1.31.31.3
0 10 20 30 40
0 5 10 15
Days
Tot.Al (µM)
0 10 20 30 40
0 5 10
Days
Tot. Al(µM)
0.0 0.2 0.4 0.6 0.8 1.0
0 5 10 15
Days
D. Al (µM)
0.0 0.2 0.4 0.6 0.8 1.0
0 5 10
Days
D. Al (µM)
Figure S2: Concentrations of total Al (Tot.Al) and dissolved Al (D.Al) in water during the
first (a, b) and second (c, d ) phases in CO2 seepage (full triangles) and in the control (open circles) chambers.
a c
d b
Phase 1 Phase 2
0 20 40 60
0 5 Days 10 15
Tot. Cr (nM)
0 20 40 60
0 5 10
Days
Tot. Cr (nM)
0 4 8 12
0 5 Days 10 15
D. Cr (nM)
0 4 8 12
0 5 10
Days
D. Cr (nM)
Figure S3: Concentrations of total Cr (Tot. Cr) and dissolved Cr (D.Cr) in water during the
first (a, b) and second (c, d) phases in CO2 seepage(full triangles) and in the control (open circles) chambers.
a c
0 00 0
d
b
Phase 1 Phase 2
0 20 40 60
0 5 10 15
Days
Tot.Ni (nM)
0 20 40 60
0 5 10
Days
Tot. Ni (nM)
0 10 20 30
0 5 10 15
Days
D. Ni (nM)
0 10 20 30
0 5 10
Days
D. Ni (nM)
Figure S4: Concentrations of total Ni (Tot. Ni), and dissolved Ni (DNi) in water during the
first (a, b) and second (c, d) phases in CO2 seepage(full triangles) and in the control (open circles) chambers.
a c
d b
Phase 1 Phase 2
0.0 0.2 0.4 0.6
0 5 10
Days
Tot. Cd (nM)
0.0 0.2 0.4 0.6
0 5 10 15
Days
Tot. Cd (nM)
0.00 0.20 0.40
0 5 10 15
Days
D. Cd (nM)
0.00 0.20 0.40
0 5 10
Days
D. Cd (nM)
Figure S5: Concentrations of total Cd (Tot.Cd) and dissolved Cd (DCd) in water during the
first (a, b) and second (c, d) phases in CO2 seepage(full triangles) and in the control (open circles) chambers.
a
0.0
c
0.00
d
0.00
b
Phase 1 Phase 2
0 1,000 2,000
0 5 10 15
Days
Tot.Zn (nM)
0 1,000 2,000
0 5 10
Days
Tot. Zn (nM)
0 100 200 300 400 500
0 5 10 15
Days
D Zn (nM)
0 100 200 300 400 500
0 5 10
Days
D.Zn (nM)
Figure S6: Concentrations of total Zn (Tot.Zn) and dissolved Zn(D.Zn) in water during the
first (a, b) and second (c, d) phases in CO2 seepage(full triangles) and in the control (open circles) chambers.
a c
d b
Phase 1 Phase 2
0 10 20 30 40 50
0 5 10 15
Days
Tot. Cu (nM)
0 10 20 30 40 50
0 5 10
Days
Tot. Cu (nM)
0 5 10 15 20 25
0 5 10 15
Days
D.Cu (nM)
0 5 10 15 20 25
0 5 10
Days
D.Cu (nM)
Figure S7: Concentrations of total Cu (Tot.Cu) and dissolved Cu (D.Cu) in water during the
first (a, b) and second (c, d) phases in CO2 seepage(full triangles) and in the control (open circles) chambers.
a c
d
0
b
0Phase 1 Phase 2
0 3 6 9 12
0 5 10 15
Days
Tot. Pb (nM)
0 3 6 9 12
0 5 10
Days
Tot. Pb (nM)
0 2 4 6 8
0 5 10 15
Days
D. Pb (nM)
0 2 4 6 8
0 5 10
Days
D. Pb (nM)
Figure S8: Concentrations of total Pb (Tot.Pb) and dissolved Pb (D.Pb) in water during the
first (a, b) and second (c, d) phases in CO2 seepage(full triangles) and in the control (open circles) chambers.
a
0
