Table 3 Trace element composition of the sediments in the Yangtze River

Tuotuohe

5.97

1988.27

46.15

45.25

5.16

16.11

61.20

189.88

13.41

346.04

5.66

Jinshajiang

9.55

6352.46

135.79

115.41

14.83

39.03

42.96

176.50

29.50

1271.48

15.28

Shigu

11.81

5770.17

113.06

84.26

12.28

31.51

48.65

172.28

30.63

655.11

13.56

Panzhihua 1

5.92

8906.07

187.85

206.07

20.68

82.82

59.77

212.66

26.43

491.92

21.58

Yalongjiang

8.26

17752.43

253.91

134.77

34.54

69.61

35.13

182.18

35.18

719.90

27.02

Panzhihua 2

5.28

16150.15

314.23

199.79

29.41

77.42

18.29

198.64

31.17

669.88

24.66

Yibin 1

3.51

13501.08

220.83

170.60

22.26

50.70

85.75

180.15

31.28

967.38

26.93

Daduhe

5.64

8161.48

157.60

125.41

15.81

43.02

52.48

202.43

42.94

1066.66

30.12

Minjiang 1

8.15

5714.67

141.56

79.69

14.21

39.19

21.33

147.92

28.02

444.22

16.05

Yibin 2

5.83

7733.59

178.70

101.48

19.19

49.41

45.90

183.60

23.18

322.45

17.88

Chongqing 1

16.32

13889.48

248.35

97.02

23.88

39.51

48.51

65.61

57.23

1284.19

30.09

Jialingjiang

10.14

6452.94

137.38

124.50

12.88

37.07

28.15

125.75

35.22

1128.31

17.88

Chongqing 2

5.93

8734.99

152.28

132.52

16.62

35.47

40.56

179.38

25.66

955.23

20.40

Fuling 1

21.05

16803.91

267.87

196.23

25.32

62.18

109.89

234.58

39.60

850.64

29.67

Wujiang

10.48

5924.52

155.52

85.13

17.34

46.09

22.87

106.42

25.61

295.34

19.66

Fuling 2

10.03

8031.61

147.71

103.73

15.11

38.30

31.20

98.81

33.30

797.32

20.31

Badong

11.63

5972.17

169.45

90.46

24.38

49.21

51.25

68.88

16.36

267.32

17.52

Yichang

3.97

4981.18

126.59

79.90

15.39

44.86

43.01

264.56

12.68

313.54

13.67

Yueyang 1

17.53

10896.68

195.09

113.91

19.76

48.58

116.77

169.30

33.27

523.93

23.41

Yuanjiang

7.65

5719.15

107.50

66.35

9.80

26.13

46.03

50.75

26.45

592.06

18.02

Xiangjiang

18.38

8477.10

202.11

139.69

18.10

59.31

195.66

73.13

43.33

1149.21

26.60

Yueyang 2

10.27

9020.72

143.59

110.77

15.47

38.21

39.49

98.18

37.90

771.32

23.34

Wuhan 1

10.08

7707.60

171.55

100.17

18.21

48.04

16.97

80.51

27.16

395.24

20.37

Hanjiang

6.32

7223.73

180.99

73.31

22.99

46.94

19.97

133.61

35.09

471.24

20.84

Wuhan 2

7.68

7962.05

182.54

98.35

17.67

47.93

21.65

83.11

27.95

400.50

21.63

Jiujiang

7.96

8957.52

170.59

98.47

18.57

44.53

31.42

102.18

31.77

544.97

22.30

Ganjiang

6.09

5900.86

80.35

48.15

7.68

19.17

105.37

43.86

38.20

971.55

28.74

Hukou

2.65

6043.32

170.45

99.28

44.42

82.55

89.58

157.36

31.77

463.21

16.90

Nanjing

9.04

15785.47

207.20

238.47

14.80

38.31

65.59

207.21

74.69

3366.28

38.35

Changxing

6.29

9014.45

148.76

107.62

15.47

84.35

37.11

172.09

45.52

1147.71

24.68