| Popis: |
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is a new analytical method developed in recent years. The LA-ICP-MS is a quasi-non-destructive multi-elemental analytical method with low detection limits, high sensitivity and specificity. In this study, this method is applied to detecting high-purity gold. The micro-region information of high-purity gold can be analysed, and the original position information of the sample can be obtained in real time and accurately. In this study, the content of impurity elements in high-purity gold were determined by LA-ICP-MS, and the accuracy and reliability of the test results were improved by calculating the uncertainty. According to the test and analysis, the gold content of the high purity gold sample is (999.995 ± 0.003) ‰, so the gold content of the sample is more than 999.99 ‰. The result shows that the LA-ICP-MS has the advantages of fast, accurate and green, which is conducive to the rapid development of jewellery industry technology, and puts forward guiding suggestions for the production development direction, and promotes the green and healthy development of jewellery industry. |
