Elements

As

Hg

Cd

Cr

Cu

Pb

Zn

Ni

Sample amount

149

153

128

129

115

133

122

133

Dry sample

unit

(μg/g)

(ng/g)

(ng/g)

(μg/g)

(μg/g)

(μg/g)

(μg/g)

(μg/g)

average

22.8

408.4

0.279

209.4

206.5

358.1

652.2

71.8

Average of the crust, tong 1990

2.2

89

0.200

110

63

12

94

89

Soil in Parcel River delta (Zhu Lixin et al., 2002)

13

87

0.350

69

28

36

95

28

Wet sample

unit

(μg/L)

(ng/L)

(ng/L)

(μg/L)

(μg/L)

(μg/L)

(μg/L)

(μg/L)

average

2.5

50.3

0.048

0.6

5.8

12.8

155.9

1.5

Average of the overall Yangtze River water system (Zhang Licheng et al., 2006)

0.88

23

0.02

0.9

1.26

0.71

4.18

0.61

Dry sample/wet sample

unit

(L/g)

(L/g)

(L/g)

(L/g)

(L/g)

(L/g)

(L/g)

(L/g)

average

20.3

16.7

8.8

586.0

141.4

60.2

6.8

240.0

Average of dry sample/average of wet sample

unit

(L/g)

(L/g)

(L/g)

(L/g)

(L/g)

(L/g)

(L/g)

(L/g)

ratio

9.3

8.1

5.8

360.1

35.7

27.9

4.2

47.9