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MANFRED ANKE AN. R. ACAD. NAC. FARM.

liegende, Muschelkalk), with an average of 0.43 µg/L and a median
of 0.28 µg/L. The differences are insignificant (63). In the USA and
Japan, the concentration of vanadium in drinking water varies in the
same range.

Vanadium in plants, animals and humans

Plants

The geological origin of the material for soil formation and, thus,
the natural anthro-pogenic vanadium offer influence the vanadium
content of the flora, depending on species and parts of plants. The
effect of the origin of the soil on the vanadium content was investiga-
ted by way of indicator plants (wheat, rye, red clover). The geological
origin with the highest vanadium content in plants was equated with
100, and the other regions were related to it. The soils of Rotliegende,
loess and granite produce a vanadium-rich flora (Table 2).

TABLE 2. Influence of the geological origin of the site on the relative vanadium
content of the flora (n wheat 352, rye 235, acre red clover 180, meadow
red clover 131)

Geological origin of the site Relative number

Rotliegende weathering soils 100
Loess 96
Granite, syenite weathering soils 88
Boulder clay 79
Muschelkalk weathering soils 79
Keuper weathering soils 75
Bunter weathering soils 73
Phyllite weathering soils 70
Slate weathering soils 67
Diluvial sands 66
Gneiss weathering soils 63
Moor, peat 61
Alluvial riverside soils 60

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