Microelemental Composition of the Bottom Sediments of the Magnitogorskoye Reservoir: Methodological Aspects and Paragenetic Associations
D. Y. Nokhrin, Y. G. Gribovskii, E. V. Sokol, N. A. Davydova, E. N. Nigmatulina
Keywords: bottom sediments, heavy metals, total content, mobile forms, statistical anаlysis
Pages: 671-680
Abstract
In the bottom sediments of the Magnitogorskoye reservoir, the total content of 35 elements was determined by means of X-ray fluorescence spectrometry using synchrotron radiation, and the concentrations of mobile forms of 10 metals were evaluated by means of atomic absorption spectrophotometry. The features of the statistical analysis of incomplete data were considered, and also the reasons of similarity and discrepancies of the data obtained by different chemical-analytical methods were discussed. With the use of principal component analysis, 4 paragenetic associations of elements were detected in the structure of the bottom sediments: the elements in the organic matter, the pelite fraction, pollutants from the Magnitogorsk metallurgical combine and pollutants from motor vehicles.
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