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Table 2 Seasonal water characteristics of mine drainage in DS and ST mine

From: Ecological assessment of coal mine and metal mine drainage in South Korea using Daphnia magna bioassay

Sample

TU

PH

EC

Alkalinity

TDS

SO4 2−

Fe2+

Tot-Fe

DO

Ca

Mg

Al

Mn

Cd

Cu

Zn

(mS/cm)

(g/L)

(mg/L)

DS-1

D

7.46

4.9

1.26

0.4

1.16

900

32.6

125

5.8

343

117

15.1

53.9

0.17

5.10

14.5

R

1.94

4.5

2.02

n.d.c

1.01

2600

1.92

168

6.38

334

112

13.3

54.2

0.16

4.34

12.0

DS-2

D

8.64

3.9

1.18

n.d.

1.18

1400

0.96

8.06

3.8

389

121

14.3

55.9

0.08

1.88

9.80

 

R

2.02

3.7

1.92

n.d.

0.96

2100

1.34

5.32

3.56

342

99.1

5.32

47.0

0.02

0.23

4.49

DS-3

D

55.9

3.4

1.00

n.d.

0.98

370

0.52

4.04

6.2

246

90.2

24.6

43.3

0.15

4.31

9.26

 

R

21.7

3.2

1.42

n.d.

0.71

600

0.1

1.7

6.13

180

63.4

14.7

30.3

0.10

2.64

6.43

DS-4

D

14.5

3.9

1.11

n.d.

0.99

4

0.01

4.89

5.1

300

96.2

12.2

35.5

0.09

2.32

6.74

 

R

13.9

3.8

1.33

n.d.

0.66

200

0.39

2.06

4.68

211

63.8

8.33

25.0

0.05

1.15

4.10

DS-5

D

–b

6.8

0.04

1.4

0.04

4

0.01

0.06

6.9

10.8

2.67

0.23

0.46

n.d.

0.03

0.11

 

R

–

6.2

0.06

9.8

0.03

6

0.04

n.d.

6.48

7.3

5.07

0.03

0.05

n.d.

n.d.

n.d.

DS-6

D

1.20

6.9

0.06

1.2

0.05

17

n.d.

n.d.

7.5

11.3

3.02

n.d.

0.56

n.d.

0.01

0.12

 

R

–

6.9

0.07

12.2

0.03

11

0.06

n.d.

6.86

6.92

5.07

0.05

0.10

n.d.

n.d.

n.d.

DS-7a

D

1.20

7.1

0.06

1.1

0.05

16

0.02

n.d.

7.9

11.3

2.9

n.d.

0.53

n.d.

0.01

0.11

ST-1

D

1.09

7.1

119

1.5

0.05

20

0.01

n.d.

5.05

14.7

2.37

0.09

n.d.

n.d.

n.d.

n.d.

 

R

–

6.6

45.0

6.1

0.02

15

0.13

0.04

6.2

8.05

1.87

0.08

n.d.

n.d.

n.d.

n.d.

ST-2

D

1.10

4.5

443

n.d.

0.22

150

0.29

0.10

5.86

33.6

22.3

11.4

4.09

n.d.

n.d.

0.22

 

R

2.17

5.0

78.0

n.d.

0.39

45

0.39

0.11

5.7

7.71

4.82

1.50

0.57

n.d.

n.d.

n.d.

ST-3

D

1.10

5.7

172

0.5

0.09

41

0.01

n.d.

4.73

18

5.55

0.12

0.58

n.d.

n.d.

n.d.

 

R

–

6.7

49.0

8.5

0.05

10

0.04

n.d.

4.32

8.52

2.37

0.01

0.02

n.d.

n.d.

n.d.

ST-4

D

14.4

3.0

3690

n.d.

1.85

2300

3.90

32.5

5.47

220

277

243

49.8

n.d.

0.52

4.94

 

R

9.98

3.3

1460

n.d.

0.73

800

0.80

9.7

5.37

140

93.1

75.1

15.4

n.d.

0.26

1.20

ST-5

D

1.90

4.2

608

n.d.

0.30

240

0.23

0.53

5.32

35.4

27.2

25.2

4.12

n.d.

n.d.

0.42

 

R

1.32

4.1

393

n.d.

0.20

210

0.36

1.11

5.04

26.8

18.8

16.2

2.38

n.d.

n.d.

n.d.

  1. TU average toxicity unit
  2. aDS-7(R) was not measured the properties
  3. bNo effect
  4. cNot detected
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