Determination of yttrium, lanthanum, and cerium in steels and nickel alloys by atomic emission spectrometry with inductive argon plasma

This article describes two variants of the atomic emission spectrometry with inductively coupled plasma (AES-ICP) method for determination of yttrium, lanthanum, and cerium in steels and nickel alloys used in power machinery construction: 1) direct determination when the elements to be determined are present at concentration of ≥ 0.01%; 2) determination after preliminary separation of the elements to be determined by means of a chelating agent when the contents of yttrium, lanthanum, and cerium are < 0.01%. The results obtained satisfy the requirements of GOST for chemical methods of analysis.