GB/T 19720-2005
AbolishedPlatinum jewellery alloys-Determination of platinum and palladium-Gravimetric method after precipitation of diammonium hexachloroplatinate and dimethylglyoxime
铂合金首饰 铂、钯含量的测定 氯铂酸铵重量法 丁二酮肟重量法
Application Summary AI generated
This standard specifies a gravimetric method for determining the platinum and palladium content in platinum jewellery alloys. It is applied in the jewellery industry for quality control and certification of precious metal content in platinum alloy products. The method involves precipitating platinum as diammonium hexachloroplatinate and palladium as dimethylglyoxime, followed by weighing the residues.
Related Standards
GB/T 21198.3-2007
Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 3: Palladium jewellery alloys - Determination of palladium - Method using a solution with yttrium as internal standard element
GB/T 21198.5-2007
Determination of precious metals in precious metals jewellery alloys using ICP spectrometry - Part 5: 999‰ silver jewellery alloys - Determination of silver - Difference method
GB/T 21198.4-2007
Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 4: 999‰ precious metals jewellery alloys - Determination of precious metals - Difference method
GB/T 21198.6-2007
Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 6: Difference method
GB/T 18303-2008
Color grading of polished diamond by visual matching
GB/T 19719-2005
Jewellery-Determination of the release of nickel-Method of spectrometry
GB/T 19718-2005
Jewellery-Determination of nickel content-Method of flame atomic absorption spectrometry
GB/T 16554-2003
Diamond grading
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