Table 2 Major element composition of the sediments in the Yangtze River

1

Tuotuohe

12.37

12.82

5.69

2.52

2.56

0.10

1.61

0.24

0.81

60.91

60.66

2

Jinshajiang

12.45

10.46

9.08

1.95

4.29

0.11

1.51

0.30

1.88

58.07

63.69

3

Shigu

10.62

8.23

4.89

1.70

2.78

0.07

1.90

0.21

0.85

68.53

56.69

4

Panzhihua 1

12.65

9.58

7.75

2.02

4.34

0.10

1.70

0.26

1.38

59.80

61.92

5

Yalongjiang

15.61

4.44

12.65

2.15

5.19

0.21

1.96

0.34

2.81

54.88

63.95

6

Panzhihua 2

14.63

6.58

9.85

2.06

4.40

0.14

1.70

0.32

2.43

57.78

65.15

7

Yibin 1

12.34

9.64

9.75

2.51

6.80

0.14

1.32

0.30

2.03

55.09

63.59

8

Daduhe

12.96

9.09

7.36

2.55

6.06

0.10

2.20

0.30

1.25

58.24

56.45

9

Minjiang

15.44

4.54

6.57

2.75

3.03

0.08

2.05

0.31

0.86

64.35

61.37

10

Yibin 2

13.15

13.21

7.42

2.75

6.58

0.10

1.32

0.26

1.20

53.65

64.21

11

Chongqing 1

12.87

2.58

15.45

2.05

2.65

0.31

1.63

0.41

2.06

60.47

62.96

12

Jialingjiang

14.71

4.01

6.53

2.65

2.45

0.07

1.66

0.24

0.93

66.62

63.77

13

Chongqing 2

11.87

12.24

7.94

2.21

5.18

0.13

1.64

0.28

1.44

57.14

60.38

14

Fuling 1

12.97

11.46

9.98

2.49

6.21

0.13

1.31

0.32

2.01

52.96

64.97

15

Wujiang

18.06

6.83

8.65

3.24

3.18

0.12

0.53

0.27

1.03

58.14

77.50

16

Fuling 2

13.53

3.05

6.83

2.40

3.20

0.08

1.66

0.22

1.23

67.39

62.63

17

Badong

19.53

1.53

8.16

3.05

1.74

0.12

0.82

0.11

0.91

63.85

76.46

18

Yichang

13.26

20.19

6.42

2.61

4.43

0.10

1.23

0.27

0.84

50.29

65.81

19

Yueyang 1

11.61

6.27

6.96

2.08

3.96

0.09

1.60

0.25

1.59

65.15

60.70

20

Yuanjiang

13.37

0.81

4.80

2.69

1.87

0.06

0.93

0.15

0.88

74.25

69.14

21

Xiangjiang

20.55

0.26

9.27

2.90

1.48

0.11

0.59

0.28

1.08

63.63

80.14

22

Yueyang 2

12.08

3.04

6.58

2.22

3.13

0.08

1.29

0.22

1.34

70.00

64.48

23

Wuhan 1

17.17

3.36

8.36

2.90

3.64

0.10

1.32

0.28

1.29

61.32

69.60

24

Hanjiang

15.90

4.43

8.51

2.61

4.04

0.11

1.98

0.29

1.21

60.74

62.97

25

Wuhan 2

17.05

3.17

8.43

2.90

3.95

0.41

1.45

0.26

1.28

60.93

68.24

26

Jiujiang

14.52

4.31

7.79

2.53

4.00

0.11

1.54

0.24

1.45

63.71

65.01

27

Ganjiang

14.10

0.43

5.09

3.01

0.94

0.06

0.71

0.14

0.90

74.33

71.50

28

Hukou

13.22

9.99

12.45

2.27

8.76

0.24

1.68

0.38

0.99

50.73

62.31

29

Nanjing

10.28

8.15

12.13

1.67

4.32

0.16

1.50

0.45

3.20

58.50

60.35

30

Changxing

12.38

5.67

6.48

2.23

4.03

0.08

1.92

0.28

1.28

65.60

58.60