Method for quantitative determination of macroelements and trace elements comprising arsenic, tin and antimony in carbon steel or low alloy steel

Abstract

The invention discloses a method for one-time simultaneous quantitative determination of macroelements and trace elements comprising arsenic, tin and antimony in carbon steel or low alloy steel, and belongs to the quantitative analysis field in the analytic chemistry. The method comprises the following steps: respectively dissolving the carbon steel or low alloy steel, and a plurality of steel standard samples to form solutions, and using spectral interferences among elements as background signals on an inductively coupled plasma-atomic emission spectrometer for the background correction of peak positions in order to eliminate spectral interferences; and absorbing the obtained steel standard sample solutions, drafting a correction curve, absorbing the obtained carbon steel or low alloy steel solution, and directly reading the percentage contents of all macroelements and trace elements comprising arsenic, tin and antimony in the carbon steel or low alloy steel. The method is simple, and allows the percentage contents of all the macroelements and trace elements comprising arsenic, tin and antimony in a sample to be simultaneously displayed dozens of seconds after the dissolving of the steel sample to form a solution, the absorption to the inductively coupled plasma-atomic emission spectrometer and the determination.

Description

technical field [0001] The invention belongs to the field of quantitative analysis in analytical chemistry, and in particular relates to a method for quantitatively measuring major elements and trace elements of arsenic, tin and antimony in carbon steel or low alloy steel. Background technique [0002] Carbon steel and low alloy steel are indispensable and important materials for the manufacture of pressure vessels, nuclear power equipment and other products. Before feeding materials and in various intermediate manufacturing links, the content of major elements and trace elements of arsenic, tin, and antimony must be tested to ensure product quality, otherwise it may affect the safe operation of pressure vessels, nuclear power equipment and other products. [0003] All existing methods for detecting powdery carbon steel and low alloy steel samples cannot simultaneously determine the major elements and trace elements of arsenic, tin and antimony in carbon steel and low alloy ...

AI Technical Summary

Problems solved by technology

The reason for the large deviation is that the background measurement point during background correction mostly selects the trough position of the spectral line of the measured element; and when the sample changes so that the interfering element produces a higher interference peak at this position, it is difficult to correctly select the background measurement point. And technicians are unwilling to accept the measurement background at the peak position, but give up, but it is difficult to take other remedial measures when giving up the background correction, so that a large number of interference signals are regarded as the signals of trace elements themselves, which will inevitably lead to significant trace analysis results. high

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