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EC number: 211-334-3
CAS number: 638-38-0
Manganese in water can be
significantly bioconcentrated by aquatic biota at lower trophic levels.
Bioconcentration factors (BCFs) of :
for marine and freshwater plants,
6.300 for phytoplankton,
5.500 for marine microalgae,
· 800 - 830
for interdial mussels and
· 35 - 930
have been estimated. Uptake of
manganese by aquatic invertebrates and fish significantly increases with
temperature and decreases with pH, whereas dissolved oxygen has no
significant effect. Uptake of manganese has been found to increase with
the decreasing salinity. Concentrations in seaweed range from 130-750
mg/kg dry weight, whereas concentrations in shellfish range from 3-660
mg/kg/dry weight; higher concentrations in shellfish are associated with
manganese- rich sediment. Concentrations of manganese found in tissue of
marine and freshwater fish tend to range from 0.2 to 19 mg/kg dry
weight. Higher manganese concentrations- above 100 mg/kg dry weight-have
been reported for fish in polluted surface waters
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