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Environmental Sciences Europe

Table 3 Average trace element contents in mg/kg (of all samples) in sludges of 9 wastewater treatment plants (WWTPs)

From: Variation of the element composition of municipal sewage sludges in the context of new regulations on phosphorus recovery in Germany

WWTP

a

b

c

D

e

f

g

h

i

n

11

10

13

10

12

12

9

12

12

As1

5

3

1

 < 1

4

  

2

 

Mo

5

4

2

3

5

5

3

1

16

Sn1

13

16

14

8

23

  

13

 

Ni

15

27

15

13

20

30

20

19

40

Cr

20

28

22

11

36

38

27

29

50

Pb

22

26

24

11

51

52

42

24

41

  1. n number of samples
  2. 1No arsenic and tin values for WWTP f, g and i. Number of analyzed samples is lower for several WWTPs. For detailed information check the Additional file which contains measurement data for each sample per WWTP a-i (Additional file 1: Fig. S1–S9)
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