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Method for determining multi-element content in high silicon low alloy steel with icp spectrometer

A low-alloy steel and spectrometer technology, applied in the direction of material excitation analysis, thermal excitation analysis, etc., can solve the problems of large consumption of chemical reagents, cumbersome experimental operations, etc., to achieve environmental protection and operator health, simple processing process, and analysis results Accurate and reliable results

Active Publication Date: 2016-01-20
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the perchloric acid dehydration gravimetric method has disadvantages such as complicated experimental operation and large consumption of chemical reagents, while the reduced silicomomolybdate spectrophotometric method is only applicable to the determination of 0.010% to 1.00% silicon content in steel. The silicon content of high-silicon low-alloy steel exceeds the applicable range, and the spectrophotometric method is no longer applicable

Method used

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  • Method for determining multi-element content in high silicon low alloy steel with icp spectrometer
  • Method for determining multi-element content in high silicon low alloy steel with icp spectrometer
  • Method for determining multi-element content in high silicon low alloy steel with icp spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] For determination of multi-element content in GBW1302 low alloy steel standard sample

[0022] (I) Preparation of sample solution

[0023] Weigh five 0.1000g GBW1302 low-alloy steel samples and put them into five 150mL polytetrafluoroethylene beakers. Add 12mL nitric acid solution to the five beakers. The volume ratio of nitric acid to water in the nitric acid solution is 1:1. Slightly shake the beaker and cover with a watch glass. Slowly heat the solution until the solution boils, then add 5 mL of water to each beaker, and continue heating until the sample is completely dissolved. Cool to room temperature, transfer the solution into a 100mL volumetric flask, dilute the solution to the mark with water, and shake it well.

[0024] (Ⅱ) Preparation of working curve solution

[0025] Weigh five parts of 0.1000g high-purity iron (purity 99.9%) and put them into five 150mL PTFE beakers. Add 12mL nitric acid solution to the five beakers. The volume ratio of nitric acid to water in t...

Embodiment 2

[0044] For the determination of multi-element content in YSBC18201-94 low alloy steel standard sample

[0045] Preparation of sample solution

[0046] Weigh five samples of 0.1000g YSBC18201-94 low-alloy steel and put them into five 150mL PTFE beakers. Add 12mL nitric acid solution to the five beakers. The volume ratio of nitric acid to water in the nitric acid solution is 1: 1. Slightly shake the beaker and cover with a watch glass. Slowly heat until the solution boils, add 7 mL of water to the solution, and continue heating until the sample is completely dissolved. Cool to room temperature, transfer the solutions in the five beakers into five 100mL volumetric flasks, dilute the solution to the mark with water, and shake it up.

[0047] Turn on the ICP spectrometer to optimize the working conditions of the instrument, and the optimized conditions are the same as in Example 1. Measure the spectral intensity of each element in the working curve solution of each volumetric flask (pr...

Embodiment 3

[0055] For determination of multi-element content in GBW1326 low alloy steel standard sample

[0056] Preparation of sample solution

[0057] Weigh five 0.1000g GBW1326 low-alloy steel samples and put them into five 150mL PTFE beakers. Add 10mL nitric acid solution to each beaker. The volume ratio of nitric acid to water in the nitric acid solution is 1:1. Slightly shake the beaker, cover with a watch glass, slowly heat until the solution boils, add 8 mL of water to the solution, continue heating until the sample is completely dissolved and cooled to room temperature, transfer the solutions in the five beakers into five 100 mL volumetric flasks, Dilute to the mark with water and shake well.

[0058] Turn on the ICP spectrometer to optimize the working conditions of the instrument, and the optimized conditions are the same as in Example 1. Measure the spectral intensity of each element in the working curve solution of each volumetric flask (prepared in Example 1) in turn, and use th...

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Abstract

The invention discloses a method for determining the content of a plurality of elements in high-silicon low-alloy steel by virtue of an ICP (Inductively Coupled Plasma) spectrograph. The method comprises the following steps: (i) preparing a test sample solution from samples to be tested; (ii) preparing a working curve solution from a high-purity iron and nitric acid solution and a national standard solution of silicon, manganese, nickel, chromium and copper elements; and (iii) carrying out spectrometry, namely selecting an optimal analysis spectral line of the silicon, manganese, nickel, chromium and copper elements by virtue of the ICP spectrograph, determining the spectral intensity of each element in the working curve solution in sequence, drawing a working curve of each element, and determining the spectral intensity of the silicon, manganese, nickel, chromium and copper elements in the test sample solution, thus obtaining the content of each element by virtue of the working curves. According to the method disclosed by the invention, the determination of the high-silicon content in the high-silicon low-alloy steel (with the weight percentage of the silicon element being 1.03%-1.97%) can be realized, the content of the silicon, manganese, nickel, chromium and copper elements can be determined at the same time, the operation is simple and convenient, and the analyzing speed and the accuracy are high.

Description

Technical field [0001] The invention belongs to a method for measuring the content of multiple elements in high-silicon low-alloy steel, in particular to a method for simultaneously measuring the content of silicon, manganese, nickel, chromium and copper in high-silicon low-alloy steel by using an ICP spectrometer. Background technique [0002] Low alloy steel is a type of steel made by adding a certain amount of alloying elements to obtain certain physical, chemical or mechanical properties on the basis of carbon steel. Low alloy steel has been widely used in the manufacture of ships, vehicles, and high-pressure vessels , Construction and other fields. [0003] The high-silicon low-alloy steel involved in the present invention specifically refers to a low-alloy steel with a weight percentage of silicon element of 1.03% to 1.97%. Silicon is one of the most important elements in low-alloy steel. It has a strong affinity for oxygen and is a good deoxidizer and reducing agent in smel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/73
Inventor 关宁昕张桂芬曹昆武
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND