Method for measuring aluminium content in sherardizing agent

Abstract

The invention discloses a method for measuring the aluminium content in a sherardizing agent through inductively-coupled plasma atomic emission spectroscopy, and belongs to the technical field of chemical detection. The method comprises weighing of a sample material, dissolution pre-treatment, melt extraction, treatment of the sample material, dilution and constant volume setting, wavelength selection, preparation of an aluminium standard solution, preparation of a calibration curve, detection with inductively-coupled plasma atomic emission spectroscopy, and calculation of analysis results andprecision. According to the method, the dissolution pre-treatment is fast, the matching ability and anti-matrix interference of the prepared aluminium standard solution are great, the detection process is easy to master, and the detection result is accurate and reliable. According to the method, the test range of w(Al) is 15.00-40.00%.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis, and in particular relates to a method for measuring aluminum content in a zinc-seeding agent with an inductively coupled plasma atomic emission spectrometer, and the measuring range is: w (Al) 15.00% to 40.00%. Background technique [0002] Zinc-seeding agents are widely used and have significant benefits. They are widely used in outdoor steel structures and fasteners, highway guardrails, bridges, plumbing appliances, construction hardware, automobiles, engineering machinery and other parts, powder metallurgy products, and chemical, marine, metallurgy, power generation and other projects. The corrosion-resistant and high-temperature-resistant parts can be made of galvanized steel products, and its economic benefits are considerable. For example, the service life of a hot-dip galvanized guardrail is generally 6 years, and the thickness of the galvanized guardrail (90-100) μm, it can be g...

AI Technical Summary

Problems solved by technology

[0023] For the above standard analysis methods, sodium fluoride-EDTA titration, chrome azure S spectrophotometry, copper and iron reagent separation-chrome azure S photometry, microwave digestion-inductively coupled plasma mass spectrometry, inductance Coupled plasma atomic emission spectrometry, alkali separation-EDTA complexometric titration, chrome azure S-polyethylene glycol octylphenyl ether-cetylpyridinium bromide spectrophotometry, CAS spectrophotometry, 8 -Hydroxyquinoline spectrophotometry, chromazurin S-tetradecylpyridine chloride spectrophotometry, 8-hydroxyquinoline gravimetric method, electrothermal atomic absorption spectrometry, etc., the main disadvantages are: long detection time, complex detection, The detection of elemental pollution is serious; or a large precision ICS-MS instrument is required; or a variety of single-element standard solutions that are consistent with the zinc-seeding agent matrix need to be prepared, and several element standard solutions are prepared and divided to establish a standard curve, which is time-consuming. It is long and the operation intensity is particularly large, and there is a lot of effort. Although the standard curve is very linear, due to the poor matching of the matrix, the detection results obtained through the standard curve are often unsatisfactory. Risk; In other words, when the pre-treatment sample dissolution technology of the above-mentioned standard method is used, the sample is not completely dissolved, and accurate aluminum content test results cannot be obtained.

For the determination of the aluminum content in the zinc-seeding agent, it is impossible to purchase and select similar zinc-seeding agent standard substances to establish a working curve.

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

[0024] The inductively coupled plasma atomic emission spectrometry method for the determination of the aluminum element content in the zinc-seeding agent has not been found (measurement range: w (Al) 15.00% ~ 40.00%)

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

At present, the development of an inductively coupled plasma atomic emission spectrometer detection method for the aluminum content of the zinc-seeding agent is still blank.

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