Site

Cu

Zn

Ni

Pb

Cr

Hg

As

Cd

Beijing

28.1

81.1

18.5

75.7

0.18

Shanghai

31.4

106.2

26.4

85.6

0.13

7.8

0.20

Nanjing

33.2

87.8

45.6

0.66

Guangzhou

24.0

162.6

58.0

64.7

0.73

10.9

0.28

Wuhan

36.0

113.0

26.0

19.0

0.43

0.69

Changsha

35.1

153.4

31.1

55.1

32.9

17.3

0.54

Xiangtan

41.5

158.0

31.0

66.6

29.4

17.3

0.75

Zhuzhou

35.6

183.3

30.6

104.3

31.5

18.0

1.04

Hengyang

31.0

110.1

29.7

44.4

26.7

16.1

0.39

Cixi

34.0

88.9

28.1

0.15

Dongguan

69.2

40.6

0.26

15.2

0.92

Nanchang

43.1

101.4

25.1

45.7

57.6

0.64

18.1

0.21

Lanzhou

41.6

69.6

37.4

17.3

Zhengzhou

17.1

67.7

0.08

6.7

0.12

Yangzhou

33.9

98.1

38.5

35.7

77.2

0.20

10.5

0.30

Wuxi

40.4

112.9

46.7

58.6

0.16

14.3

0.14

Taihang

21.2

70.0

25.0

18.8

57.8

0.08

6.2

0.15

Chengdu

42.5

227.0

77.3

59.5

0.31

11.3

0.36

Hainan

30.3

52.2

15.5

48.0

22.7

8.1

0.28

Jinghe

22.4

44.2

14.9

0.14

Kunshan

34.3

105.9

31.1

30.5

87.7

0.20

8.2

0.20

Xuzhou

35.3

149.7

56.2

2.57

Tianjin

73.0

44.0

36.0

0.80

10.7

0.61

Baiyin

99.3

147.0

44.2

84.1

0.98

China Background

22.6

74.2

26.9

26.0

61.0

0.07

11.2

0.10