Djingova R, Ivanova J U, Wagner G, Korhammer S, Markert B
Department of Analytical Chemistry, Faculty of Chemistry, University of Sofia, Bulgaria.
Sci Total Environ. 2001 Dec 3;280(1-3):85-91. doi: 10.1016/s0048-9697(01)00817-8.
The concentrations of lanthanoids, Be, Bi,Ga, Te, Tl, Th and U have been determined using ICP-MS for 100 standardized samples of poplar leaves collected from the territory of Bulgaria. The investigated elements are log-normally distributed on the territory. Using cluster analysis of the analytical data the samples were grouped according soil type on which the plants are growing.