Accelerated methods of spectral analysis in the study of chemical elements distribution in sedimentary rocks

Abstract

Identification of regional geochemical regularities by the character of chemical elements distribution in sedimentary rock strata can be achieved by accelerated methods of spectral analysis. However, this requires sufficient accuracy in determining the content of chemical elements in rocks and preservation of the main advantages of spectral analysis: speed, high sensitivity and simplicity. Based on the consideration of the peculiarities of rock samples and simple methods of analysis, it is advisable to use the method of line appearance in combination with a three-stage attenuator (for individual elements) and the method of step attenuation of lines by three orders of magnitude according to M. M. Clair. The M. M. Clair method, unlike other accelerated methods of analysis, simultaneously determines many elements on a single spectrum, in addition, the estimation of content is simple in a large range of determined concentrations. This makes the method promising for mass analysis of rock samples in regional studies.