A. P. Karpinsky Russian Geological Research Institute (Saint-Petersburg, Russia):

Oleynikova G. A., Head of Laboratory, Candidate of Chemical Sciences, e-mail: Galina_Oleynikova@vsegei.ru

Saint Petersburg State University (Saint-Petersburg, Russia):
Panova E. G., Professor, Doctor of Geological and Mineralogical Sciences, e-mail: elena-geo@list.ru

Colloid-salt fraction (nanofraction) is extracted by water from a rock sample under the special conditions. The size of particles of this fraction is less than 1000 nm. The sample of rock and its nanofraction are analyzed by inductively coupled plasma mass spectrometry method (ICP MC method).
The carried out researches have shown that the analysis of water solutions of nanofraction allows to realize all possibilities of ICP MS method in the maximum degree. This makes it possible to decrease the detection limits for a range of rare and scattered elements in initial samples by 2-3 orders.
The nano-geochemistry method makes it possible to register the clarke contents of chemical elements in geological objects. This method is very important for analysis of mobile forms of toxicants in environmental objects.
Geochemical anomalies, obtained by results of nanofraction analysis, are more contrast, which makes it possible to hold their gracing more correctly. Information resource of nanofraction analysis can significantly increase the efficiency of geochemical methods of searching of minerals. This resource can also discover the new possibilities for solving the problem of extraction of low concentrations of chemical elements from natural ores and products of their processing.
The researches were held within the frame of the program 2.1.2 “Support of scientific and pedagogical personnel of Russia 2009-2013”. Contract with the state authorities No. P1408 (П1408).

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