Abstract
A total of 29 major and trace elements have been determined in 43 plant samples collected from the Xizang (Tibet) Plateau using INAA at a SLOWPOKE mini-reactor in order to study elemental background concentration values in Xizang plants. In this paper are reported elemental concentrations of different parts of the plants compared to average values of plants worldwide. The preliminary results suggest that nutritional, plant elements in this region are quite low indicative of a state of malnutrition, while the contents of Al, Ti, Cr and Ba are comparatively high. These findings indicate that the concentrations of most elements in the plants are mainly affected by local soil geochemical characteristics. Some variation in elemental distribution within the plants was also evident: in general, higher concentrations were found in stems compared to roots, and, differences for nutritional elements among the plant species were much greater than found for other elements.
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