Preparation method of gold standard sample

Abstract

The invention discloses a preparation method of a gold standard sample. The preparation method comprises the steps of pure gold and doping element preparation, single-standard alloy preparation, mixed-standard alloy preparation, standard sample preparation and the like. Through two-stage doping steps of single-standard alloy preparation, mixed-standard alloy preparation and the like, doping elements are uniformly doped through two times of smelting; and meanwhile, when the gold standard sample is prepared, pure gold is used as a dilution solvent to dilute a mixed standard alloy containing multiple elements step by step, so that a set of gold standard sample with the impurity element content in gradient distribution is successfully prepared. The problem of development of gold standard samples is successfully solved, the problems of few doping elements, high loss rate, poor uniformity and the like in a conventional method are solved, more than ten impurities are uniformly doped into goldto prepare standard series samples, and technical support is provided for product quality control of gold smelting enterprises.

Description

technical field [0001] The invention relates to a preparation method of a gold standard sample, and mainly relates to a multi-element doping and smelting method in the preparation of the gold standard sample. [0002] technical background [0003] As a precious metal, gold has important industrial applications and is also an important support for international finance and trade. According to market demand and relevant standard requirements, gold is usually processed into certain fineness products such as gold ingots, and the common grades are 99.5%, 99.9%, 99.99%, 99.995%. For the detection of this type of gold content, the instrument is generally used to carry out the impurity back-off method, and the accurate determination of the content of impurity elements is the key to the detection. Usually, it is necessary to use standard solutions or standard samples to calibrate the working curve of the instrument. Among them, the standard sample is a key link in quality control an...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing a gold standard sample, through a specific method of multi-element doping and smelting in gold, to realize the preparation of a gold standard sample with a gradient distribution of impurity element content, and to solve the problem of the current gold standard sample. The problem of a small number of standard samples and a single type can fill the technical gap of multi-element doping and meet the growing product quality control needs of the gold industry

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