Gold standard sample preparation method

Abstract

The invention discloses a method for preparing a gold standard sample, which comprises the steps of preparing pure gold and doping elements, preparing a single-standard alloy, preparing a mixed-standard alloy, and preparing a standard sample. Through two-stage doping steps such as single-standard alloy preparation and mixed-standard alloy preparation, and two smelting steps to uniformly incorporate doping elements; at the same time, when preparing gold standard samples, use pure gold as a dilution "solvent" to dilute the multi-element The mixed standard alloy was diluted step by step, and a set of gold standard samples with gradient distribution of impurity elements was successfully prepared. The invention successfully solves the problem of developing gold standard samples, solves the problems of less doped elements, high loss rate, and poor uniformity in conventional methods, and evenly mixes more than ten kinds of impurities into gold to prepare standard series samples, which are gold standard samples. The product quality control of smelting enterprises provides technical support.

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

Images