GB/T 40114-2021 Translated English of Chinese Standard (GBT40114-2021): Jewellery - Determination of precious metal content - Difference method usinginductively coupled plasma optical emission spectroscopy [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]www.ChineseStandard.net, 2021 M09 3 - 14 páginas This Document specifies a method for determining the content of precious metals by determining the content of impurity elements in gold, platinum, and palladium alloy jewellery. This Document is applicable to gold alloy jewellery with gold content of 725??~999??, platinum alloy jewellery with platinum content of 800??~999??, and palladium alloy jewellery with palladium content of 800??~999??. |
Contenido
| 3 | |
1 Scope | 5 |
4 Principle | 6 |
6 Instruments | 8 |
7 Test Procedures | 9 |
8 Calculation of Results | 10 |
9 Repeatability | 11 |
Appendix A Informative Recommended Test Analysis Line | 13 |
Términos y frases comunes
10mL of hydrochloric 10mL of mixed 10mL of nitric 115mL of hydrochloric 500mL volumetric flask 50mL beaker acid 1+1 acid and water Add 10mL add hydrochloric acid Analysis Line Refer atomic emission spectrometer Bismuth calculate the content calibration curve calibration solution chromium Class-A in GB/T Clause content of precious cooling Delete Determination of Precious dilute with water Document Edition gold alloy jewellery heat to dissolve hydrochloric acid 5.13 impurity element inductively coupled plasma Laboratory Glassware limit of detection mark with water mg of pure mixed acid 5.16 mixed standard stock Modify the description nitric acid 5.15 palladium alloy jewellery pipette plasma emission spectrometer platinum alloy jewellery precious metal content Prepare hydrochloric acid Recommended Test Analysis Recommended Wavelength rhodium ruthenium sample Semi-quantitative test silver standard stock slowly heat solutions of iridium specimen solution standard stock solution Test Analysis Line test elements total amount transfer volume ratio volumetric flask pre-filled Weigh µg/mL