Method for quickly determining gold, palladium, platinum, rhodium, iridium, silver, nickel, copper and iron in rare and precious metal system

Abstract

The invention relates to a method for quickly determining gold, palladium, platinum, rhodium, iridium, silver, nickel, copper and iron in a rare and precious metal system. According to the detection principle of an inductively-coupled plasma-atomic emission spectrometry, the method comprises experimental conditions, sample treatment, working curve plotting, interference and elimination, detectionlimits and accuracy, wherein the experimental conditions comprise instrument selection, selection of analytical spectral lines, and determination of acidity of a system to be measured; the sample treatment comprises treatment and measurement of a test sample; the working curve plotting comprises preparation of a series of standard solutions, working curve plotting and calculation of analytical results; whether a spectral line of a coexistence element exists adjacent to the analytical spectral line of an element to be tested or not through the investigation and analysis of coexistence elementinterference is performed; determination is continuously performed for 11 times by using a blank solution excluding the element to be tested to obtain the detection limits and lower determination limits of the method; a precision experiment is conducted by repeatedly determining a sample for 11 times, and a standard recovery experiment of the sample is performed; and finally, compared with results obtained through the original determination method, the reliability of determined results of the method provided by the invention is further confirmed.

Description

technical field [0001] The invention belongs to the technical field of metal testing and analysis in the metallurgical industry, and in particular relates to a rapid determination of gold, palladium, platinum, rhodium, iridium, silver, nickel, copper and iron in materials rich in precious metals produced by the smelting and enrichment process of rare and precious metals method. Background technique [0002] For nickel and copper smelting enterprises, such as chloride slag, alkali leaching slag and concentrate, etc., the analysis methods of these materials adopt traditional chemical analysis methods such as extraction separation spectrophotometry after alkali fusion acid leaching and spectrophotometry after acid dissolution. The analysis of gold, palladium, platinum, rhodium, iridium, silver, nickel, copper, and iron involves four analysis methods. Not only is the operation process lengthy and complicated, which seriously restricts the analysis speed, but also a large amount ...

AI Technical Summary

Problems solved by technology

The analysis of gold, palladium, platinum, rhodium, iridium, silver, nickel, copper, and iron involves four analysis methods. Not only is the operation process lengthy and complicated, which seriously restricts the analysis speed, but also a large amount of sodium salt and Nickel matrix affects subsequent analysis, and the analysis quality is also greatly affected by ambient temperature and human factors, and the analysis quality is easy to fluctuate

And the extraction process needs a lot of strong acid and toxic and harmful reagents, the labor intensity is high, and the working environment is poor, which seriously affects the physical and mental health of the workers on the job.

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