Method for detecting gold content and quality of gold paper voucher and thickness of gold layer

Abstract

The invention discloses a method for detecting the gold content and quality of a gold paper voucher and the thickness of a gold layer. The method comprises the steps of dissolving a detected sample, filtering the solution to obtain a test solution A, extracting a part of the test solution A to prepare a test solution B, performing comparative analysis on the test solution A, the test solution B and the prepared standard solution respectively via an inductively coupled plasma spectrometer to obtain the components and contents of metal elements in the test solution A and the test solution B, and finally, calculating the gold content, gold quality and thickness of the gold layer of the detected sample via a formula. The detection steps are simple and convenient, the contents of only two impurity elements including silver and copper which may be included in the gold paper voucher can be detected by using the traditional detection method, and the method can detect the contents of multiple impurity elements including silver, copper, iron, magnesium, zinc and the like which may be included in the gold paper voucher, so the detection range is wider and the precision of the overall detection result is higher.

Description

technical field [0001] The invention relates to the field of precious metal detection, in particular to a method for detecting gold content, quality and gold layer thickness of gold paper coupons. Background technique [0002] Gold paper coupons are processed by oil pressure technology, with paper as the carrier, every 100cm 2 Gold products whose gold quality is not higher than 50 mg; for a long time, Chinese craft paintings have been famous both at home and abroad, and many craft paintings with appreciation value are highly appreciated by people from all walks of life, such as iron paintings, cork paintings, feather paintings, shell carving paintings, etc. However, , with the development of modern civilization, people's appreciation level of craft painting has been further improved, but there are many deficiencies that are difficult to overcome in traditional craft painting, gold decoration craft painting came into being, from processing technology to The production proces...

AI Technical Summary

Problems solved by technology

[0003] In response to the growing market demand for gold paper coupons, there is currently no standardized testing method that is fully suitable for testing the gold content and thickness of the gold layer of gold paper coupons. Acupuncture method, X-ray fluorescence spectrometry, ICP spectrometry, fire test gold method, etc. These methods have the characteristics of a wide range of analysis, but they also have poor pertinence, cumbersome operations, and high inspection costs, and are not completely suitable for gold paper coupons. detection

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