Lanthanide anoxic marine basins

Lanthanide complexation by organic 7. Lanthanide cycling in anoxic marine basins, ... 

Lanthanide solubility in seawater 520 7.1. Anoxic marine basins 576... 

The following features emerge from all studies of lanthanides in anoxic marine basins (1) The transition from oxic to anoxic conditions results in large increases in the dissolved concentrations of all lanthanides. Sharp gradients develop across oxic/anoxic boundaries. 

The objective of this section is to describe the major features of lanthanides in the water column of anoxic basins and briefly discuss the mechanisms responsible for spatial and temporal variations. Two examples will be used, the Black Sea and Chesapeake Bay. The next subsection on lanthanides in pore waters follows naturally in that many of the processes operating in anoxic water columns occur in marine sediments. 

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