Table 1 Chemical analysis of sampled fluids.

From: High-resolution geoelectrical characterization and monitoring of natural fluids emission systems to understand possible gas leakages from geological carbon storage reservoirs

Water analyses

ID

UTM WGS84 33T E

UTM WGS84 33T N

T (°C)

pH

ORP mV

EC mS/cm

HCO3 mg/L

F mg/L

Cl mg/L

SO4 mg/L

NO3 mg/L

Br mg/L

Na mg/L

K mg/L

Mg mg/L

Ca mg/L

BM1

505,871

4,567,468

13.8

8.37

13

18.25

2832.6

8.8

4957.1

5.4

nd

27.9

4159.9

28.5

14.0

8.4

BM2

505,867

4,567,471

12.5

7.99

79

18.32

2617.9

12.5

4892.3

1.6

nd

27.3

3994.1

7.4

21.5

14.8

BM3

505,884

4,567,451

13.8

7.85

− 177

18.53

2780.3

12.6

4880.5

0.9

nd

27.5

4091.3

8.4

16.1

8.4

BM4

505,884

4,567,438

11.0

7.90

− 61

18.20

2784.5

12.4

4860.6

1.0

nd

27.1

4071.6

23.4

16.4

10.0

PB1

505,657

4,567,144

11.5

7.59

161

1.570

477.18

3.5

265.7

112.1

10.1

nd

296.9

3.9

21.3

55.8

PB2

505,395

4,566,796

14.0

7.23

150

1.020

387.48

1.2

93.5

80.5

47.9

nd

86.3

6.4

20.2

123.4

PB3

505,744

4,567,955

12.0

7.35

152

0.634

408.83

0.6

16.6

31.8

0.2

0.1

35.0

6.6

11.3

107.5

AS

505,833

4,567,451

11.1

8.19

130

2.12

574.2

1.0

446.7

120.8

0.1

nd

454.1

14.7

16.6

60.7

AF

505,826

4,567,440

12.1

7.91

143

0.616

266.65

1.0

30.8

35.6

0.2

nd

48.0

6.7

7.9

56.8

Free gases analyses

ID

UTM WGS84 33T E

UTM WGS84 33T N

% CO2

% Ar

% O2

% N2

% CH4

% He

        

BM1

505,871

4,567,468

1.19

0.06

0.71

4.26

95.05

0.05

        

BM2

505,867

4,567,471

1.13

0.45

9.95

37.74

51.76

0.03

        

BM3

505,884

4,567,451

1.34

0.03

0.12

2.23

95.86

0.05

        

Dissolved gases analyses

 

ID

UTM WGS84 33T E

UTM WGS84 33T N

CO2 mmol/L

Ar mmol/L

O2 mmol/L

N2 mmol/L

CH4 mmol/L

He mmol/L

        

BM4

505,884

4,567,438

1.3E + 00

2.4E-03

4.0E-03

1.4E-01

1.5E + 00

8.5E-05

        

PB1

505,657

4,567,144

4.6E-01

1.8E-02

1.9E-01

8.2E-01

nd

6.6E-06

        

PB2

505,395

4,566,796

6.2E-01

1.7E-02

2.5E-01

7.0E-01

nd

3.6E-06

        

PB3

505,744

4,567,955

5.9E-01

2.0E-02

1.2E-01

8.6E-01

nd

3.6E-06

        
  1. Free gas phase is expressed as %vol.