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Determination method for content of arsenic, tin and zinc in steel

A method of determination, technology of zinc content, applied in the direction of measuring device, preparation of test samples, material analysis by electromagnetic means, etc., can solve the problems that the three elements cannot be measured at the same time, the environment and human body are harmful, and there are many chemical reagents, etc. Achieve the effect of simple and quick analysis method, fast analysis speed and less reagents

Inactive Publication Date: 2016-05-04
INNER MONGOLIA BAOTOU STEEL UNION
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Problems solved by technology

[0005] Therefore, the present invention aims at the shortcomings of the prior art that the three elements of arsenic, tin and zinc in steel cannot be measured simultaneously, and uses more chemical reagents, which is harmful to the environment and human body, has many interference factors, slow analysis speed and low accuracy, and provides A kind of assay method of arsenic, tin, zinc amount in steel, described method comprises the following steps:

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  • Determination method for content of arsenic, tin and zinc in steel
  • Determination method for content of arsenic, tin and zinc in steel
  • Determination method for content of arsenic, tin and zinc in steel

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Embodiment Construction

[0019] The specific embodiment of the present invention is described below in conjunction with accompanying drawing:

[0020] The method steps of this specific embodiment are as figure 1 as shown,

[0021] A kind of assay method of arsenic, tin, zinc content in steel, method comprises the following steps:

[0022] Step 1: Prepare sample solution

[0023] Weigh 0.1000g of sample into a polytetrafluoroethylene beaker, add 10mL of 1+1 nitric acid, 2mL of hydrofluoric acid, heat to dissolve at low temperature, remove and cool slightly, transfer to a 100mL plastic volumetric flask, and dilute to the mark with pure water; 1+1 nitric acid is made by mixing nitric acid and pure water at a volume ratio of 1:1.

[0024] Step 2: Prepare arsenic, tin, zinc working curve standard solution

[0025] Weigh six 0.1g high-purity iron samples into six polytetrafluoroethylene beakers, add 10mL of 1+1 nitric acid and 2mL of hydrofluoric acid, heat to dissolve at low temperature, remove and tra...

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Abstract

Belonging to the field of metallurgical analysis methods, the invention discloses a determination method for the content of arsenic, tin and zinc in steel, and aims to solve the disadvantages of unable simultaneous determination of the content of arsenic, tin and zinc three elements in steel, a lot of use of chemical reagents, harm to the environment and human body, many interference factors, slow analysis speed, and low accuracy in the prior art. The determination method comprises the steps of: 1. preparation of a sample solution, 2. preparation of an arsenic, tin, zinc working curve standard solution, and 3. determination of the content of arsenic, tin and zinc in steel. The method provided by the invention has the characteristics of low detection limit of 0.10ng / ml, simple and fast analysis method, few reagent, little interference, fast analysis speed, good precision, and high accuracy, and is suitable for simultaneous determination of the content of arsenic, tin and zinc three elements in steel.

Description

technical field [0001] The invention specifically relates to a method for determining the amount of arsenic, tin and zinc in steel, and belongs to the field of metallurgical analysis methods. Background technique [0002] In the metallurgical industry, arsenic, tin, and zinc elements often exist in steel as harmful impurities. So there is very little control (<0.01%) on the amount of these elements. [0003] At present, in addition to the AAS method, ICP-AES method, and AFS method using modern technology, the traditional analysis methods mainly include photometric methods. Photometry is often accompanied by separation and enrichment operations in order to eliminate the interference of other elements and improve sensitivity. The national or industry standard methods for the determination of arsenic, tin and zinc content in steel are: GB / T223.80-2007 Determination of bismuth and arsenic content in iron and steel and alloys - hydride generation-atomic fluorescence spectrom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N1/28G01N1/38G01N27/626
CPCG01N1/28G01N1/38G01N27/626
Inventor 薛玉兰刘钢耀王宴秋刘建华
Owner INNER MONGOLIA BAOTOU STEEL UNION
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