Vital Caspian Graphics 2

Pesticides and heavy metals in sediments

V

V

V

V

V

V

Atyrau

Atyrau

b a

b a

b a

b a

b a

b a

Atyrau

Atyrau

o l g

o l g

o l g

o l g

Atyrau

Atyrau

o l g

o l g

m

m

m

m

m

m

E

E

E

E

E

E

a

a

a

a

a

a

Astrakhan

Astrakhan

Astrakhan

Astrakhan

Astrakhan

Astrakhan

RUSSIA

RUSSIA

RUSSIA

RUSSIA

RUSSIA

RUSSIA

KAZAKHSTAN

KAZAKHSTAN

KAZAKHSTAN

KAZAKHSTAN

KAZAKHSTAN

KAZAKHSTAN

Aktau

Aktau

Aktau

Aktau

Aktau

Aktau

Makhachkala

Makhachkala

Makhachkala

Makhachkala

Makhachkala

Makhachkala

Derbent

Derbent

Derbent

Derbent

Derbent

Derbent

Baku

Baku

AZERBAIJAN

AZERBAIJAN

AZERBAIJAN

AZERBAIJAN

AZERBAIJAN

AZERBAIJAN

Turkmenbashi

Turkmenbashi

Turkmenbashi

Turkmenbashi

Turkmenbashi

Turkmenbashi

Baku

Baku

Baku

Baku

k s

k s

K u r

K u r

K u r

K u r

k s

k s

k s

k s

K u r

K u r

r a

r a

r a

r a

r a

r a

A

A

a

a

a

a

a

a

A

A

A

A

TURKMENISTAN

TURKMENISTAN

TURKMENISTAN

TURKMENISTAN

TURKMENISTAN

TURKMENISTAN

k

k

k

k

k

k

a

a

a

a

r

r

a

a

r

r

t

t

r

r

t

t

t

t

A

A

A

A

A

A

Rasht

Rasht

Rasht

Rasht

Rasht

Rasht

Gorgan

Gorgan

Gorgan

Gorgan

Gorgan

Gorgan

IRAN

IRAN

IRAN

IRAN

IRAN

IRAN

Arsenic

Mercury

Copper

Pesticides

Nickel

Chromium

0

200 km

0

200 km

0

200 km

0

200 km

0

200 km

0

200 km

Sampling areas Arsenic concentration above ERL (8.2 µg/g)

Sampling areas DDT concentration above ERL (1 600 pg/g) Lindane concentration above ERL (300 pg/g)

Sampling areas Mercury concentration above ERL (0.15 µg/g)

Sampling areas Copper concentration above ERL (34 µg/g)

Sampling areas Nickel concentration above ERL (21 µg/g)

Sampling areas Chromium concentration above ERL (81 µg/g)

N.B.: Maximum nickel concentration in analyses measured was 68 µg/g.

N.B.: Maximum chromium concentration in analyses measured was 128 µg/g.

Note: Maximum arsenic concentration in analyses measured was 22.6 µg/g

Note: Maximum mercury concentration in analyses measured was 0.45 µg/g

Note: Maximum copper concentration in analyses measured was 57.6 µg/g

Source: Interpretation of Caspian Sea Sediment Data, Caspian Environment Programme, 2002; Transboundary Diagnostic Analysis Revisit, 2007 The Effects Range Low (ERL) is an indicator of concentrations above which adverse effects occur (National Oceanic Atmospheric Administration (NOAA) Marine Sediment Quality Guideline Values).

The Effects Range Low (ERL) is an indicator of concentrations above which adverse effects occur (National Oceanic Atmospheric Administration (NOAA) Marine Sediment Quality Guideline Values).

Source: Interpretation of Caspian Sea Sediment Data, Caspian Environment Programme, 2002.

42

43