Multielement Atomic Emission Spectrographic Analysis of Natural Objects in Environmental and Agrochemical Research
With the purpose of increasing the accuracy of the quantitative multielement analysis of natural objects, the effect of their principal constituents (K, Na, Ca, Mg, and Fe) on the ionic emission of trace elements in atomic emission spectrometry was studied using an arc argon two-jet plasmatron. It was found that the effect of interfering elements on the analytical signal was low and was easily controlled by selecting operational conditions for the formation of plasma jet, buffering, comparison samples, and comparison elements. A procedure was developed for the quantitative determination of a wide range of trace elements in polytypic rocks, soils, and plant ashes with a standard deviation of 0.06-0.15 and a detection limit of n 10<sup>-4</sup>-n 10<sup>-6</sup> using artificially prepared common comparison samples.