Abstract

The literature data on the phase, physicochemical, and chemical properties of trace elements (microelements) in the abioticphases of natural aqueous media — the atmosphere, the surface microlayer of water, natural waters, suspended and colloidalparticles, bottom deposits, and pore waters, as well as the mechanisms of the interconversions of these forms are surveyed andcritically examined. The ways in which trace elements are absorbed and removed via the interfaces of these phases and onmixing in the estuary as well as the causes of such sorption and removal are considered. It is shown that the form of the traceelements in the phases of all types of natural waters (in oceans, seas, rivers, estuaries, lakes, and bogs) plays a decisive role intheir transport, biological availability, and biogeochemical cycles. The bibliography includes 368 references.

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