Multi-element standard solution for analyzing harmful elementary compositions in steel and preparation method of multi-element standard solution

Abstract

The invention discloses a multi-element standard solution for analyzing harmful elementary compositions in steel and a preparation method of the multi-element standard solution, and belongs to the technical field of metallurgical analysis. The solution contains the following elements of: arsenic (As), stibium (Sb), bismuth (Bi), plumbum (Pb), zinc (Zn) and cadmium (Cd); the content of each element is 0.01mg / mL; and a solution medium is HNO3 at the mass concentration of 5 percent. By tightly combining the characteristic of the alloy composition of a steel material, the standard problem of inductively coupled plasma (ICP) instruments for material alloy analysis can be solved, interferences of an iron base body and a background can be eliminated, traceability is realized, the analysis time is shortened greatly, and the multi-element standard solution is convenient for users.

Description

technical field [0001] The invention belongs to the technical field of metallurgical analysis, in particular to a multi-element standard solution for analyzing harmful element components in iron and steel and a preparation method thereof. Background technique [0002] Recently, my country's iron and steel industry has begun to focus on the development from output to quality. The addition and control of alloying elements in metal materials is an important means to improve the strength and toughness of materials. At the same time, the control of some harmful elements in metal materials is also to improve the strength and toughness of materials. important means. The presence of harmful elements such as arsenic, antimony, bismuth, lead, zinc, and cadmium increases the brittleness of steel, reduces toughness, easily produces segregation and cracks, and affects the welding performance of steel materials. The content of harmful elements in iron and steel is relatively low, and the ...

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Problems solved by technology

The presence of harmful elements such as arsenic, antimony, bismuth, lead, zinc, and cadmium increases the brittleness of steel, reduces toughness, easily produces segregation and cracks, and affects the welding performance of steel materials, etc.

The content of harmful elements in iron and steel is relatively low, and the analysis method is relatively complicated. Analysis methods such as extraction have been used all the time, which has been a difficulty in the detection field because of the toxicity to operators.

[0003] With the development of analytical technology, the use of large-scale analytical instruments such as inductively coupled plasma emission spectrometer (ICP) is becoming more and more popular in the metallurgical industry, and the problem of difficult detection of harmful elements has been solved, but the detection of instruments requires accuracy and stability. However, most of the standard solutions currently on the market are single elements, which need to be prepared and added during use, and a lot of time is wasted. Today, the pace of iron and steel smelting is very fast, and this has become a bottleneck.

Another biggest problem with single-element standard solutions is matrix matching and collective interference. It is difficult to eliminate the interference of iron matrix, so it is very inconvenient to use. The multi-element developed for these large instruments can simultaneously measure multiple elements There are still relatively few standard solutions, and the multi-element standard solution for the analysis of harmful elements in steel is still blank

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