Method for measuring zinc content in zinc impregnating agent

Abstract

The invention discloses a method for measuring zinc content in a zinc impregnating agent by using an inductively coupled plasma atomic emission spectrometer, and belongs to the technical field of chemical detection. The method comprises the following steps of specimen weighing, pretreatment and melting, melt leaching, specimen treatment, diluting to constant volume, wavelength selection, preparation of a zinc standard solution, preparation of a calibration curve, detection through an ICP (Inductively Coupled Plasma) atomic emission spectrometer, calculation of an analysis result and precision measurement. By adopting the method, rapid pretreatment dissolving of a zinc impregnating agent specimen, high matching performance of zinc standard solution preparation, high substrate interference resistance, easiness in comprehending a detection process, and accurate and reliable detection result are realized. A measuring range w(Zn) is 20.00 to 60.00 percent. By adopting the method, a solid foundation is laid for improvement on the product quality, increase in the production efficiency and lowering of the production cost of the zinc impregnating agent; a reliable basis is provided for rapid, accurate and quantitative analysis of zinc in the zinc impregnating agent. An advanced level in the detection field is reached.

Description

technical field [0001] The invention relates to a method for measuring the zinc content in the zinc sherardizing agent by using an inductively coupled plasma atomic emission spectrometer in the field of chemical detection, in particular to an ICP atomic emission spectrometer quantitative analysis method for the zinc content in the zinc sherardizing agent, the measuring range: w (Zn) 20.00% to 60.00%. Background technique [0002] The medium composed of zinc powder that can generate active zinc atoms or adding infiltrating agents and fillers is called zinc infiltrating agent. The main components are alumina, zinc agent, nickel powder, ammonium fluoride, etc. [0003] The principle of powder zinc sherardizing technology is to place the zinc sherardizing agent and steel parts in a zinc sherardizing furnace and heat them to about 400°C, and the active zinc atoms will penetrate into the steel parts from the surface to the inside. At the same time, iron atoms diffuse from the in...

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Problems solved by technology

[0035] However, the above standard analytical methods used 5-bromo-PADAP spectrophotometry, PAN spectrophotometry, flame atomic absorption spectrometry, 4-methyl-pentanone-2 extraction separation-Na 2 EDTA titration, inductively coupled plasma mass spectrometry, photoelectric direct reading emission spectrometry, inductively coupled plasma-emission spectrometry, potassium permanganate titration, etc., the main disadvantages are: complex detection process, serious contamination of detection elements, detection time Up to 16 hours or more; or, need to use a large precision ICP-MS instrument; or, need to prepare a variety of single-element standard solutions that are consistent with the zinc-seeding agent matrix, and prepare and divide several element standard solutions to establish a standard curve It is very long and the operation intensity is particularly large, especially after a lot of efforts. Although the standard curve is very linear, due to the poor matching of the matrix, the test results obtained through the standard curve are often unsatisfactory; , when using the pre-treatment sample dissolution technology of the above-mentioned standard method, the sample is not completely dissolved, and accurate zinc content test results cannot be obtained

For the determination of the zinc content in the sherardizing agent, it is impossible to purchase and select similar standard materials of the sherardizing agent to establish a working curve

That is to say, there is no suitable series of reference materials for zinc sherardizing agents, which cannot meet the requirements for accurate detection of zinc content in zinc sherardizing agents

[0036] There is no ICP atomic emission spectrometry method for the determination of zinc content in zinc sherardizing agent (measurement range: w(Zn)20.00%~60.00%)

In addition, in the enterprise standard method, no relevant applicable detection method was found

At present, the development of an ICP atomic emission spectrometer detection method for the zinc content of the zinc sherardizing agent is still blank.

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