METHOD FOR DETERMINING ELEMENT COMPOSITION AND GRANULOMETRIC COMPOSITION OF A SAMPLE

摘要

The invention relates to the field of atomic emission spectroscopy analysis, specifically to a method for determining element content and the forms in which said elements are present in a dispersed sample, and the granulometric composition of the sample. The present method includes inserting a sample into a plasma flame, recording the sequence of the atomic emission spectra when the sample enters into the plasma and calculating the intensities of the analytical spectral lines, taking into account the background beneath the lines of all of the elements being sought depending on the entry time of the sample into the plasma flame. The plasma source used is in the form of microwave heating energy from several sources arranged in sequence and controlled independently of one another, said sources being based on microwave plasma generators having atmospheric pressure toroidal plasma. Spectra are recorded by a multi-element photodetector in a scintillating and/or integrated mode.