Estuary

Cu (nM)

Cd (nM)

System characteristics

Lena river¹

1.6 - 11.8

0.02 - 0.20

Non industrialized

Amazon river²

2 - 24

0.04 - 0.10

Non industrialized

North Biscay Bay³

1.7 - 8.0

0.11 - 0.26

Non industrialized

Loire estuary (inner)³

8.0 - 21.2

0.08 - 0.29

Agricultural activity

Morlaix river⁴

0.6 - 19.0

0.04 - 0.48

Agricultural activity

Gironde river⁵

6.2 - 21.2

0.20 - 1.20

Lightly industrialized

Seine river⁶

7.8 - 39.5

0.31 - 1.96

Highly industrialized and urban center

Blanca Bay⁷

26.7 - 50.3

5.34 - 9.78

Highly industrialized and urban center

This work

6.4 - 45.4

0.35 - 2.64

Highly industrialized and urban center