Vanadium (V)

Atomic number:	23
Atomic weight:	50.9415
Average concentration in ocean:	39 nmol/kg
Residence time:	50,000 years

Distribution in ocean
The vertical profile of dissolved vanadium shows a very slight depletion near the surface (data).

Speciation
Vanadium is present in the +V oxidation state as HVO₄^2- and H2VO₄^-.

Residence time
The vanadium residence time was calculated from the global average river input (Collier, 1984).

Analysis
Vandium is determined by graphite furnace, atomic absorption spectrometry after preconcentration of vanadium with an organic ligand.

References & Notes