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See Chinese contents: GB/T 40114-2021 GB/T 40114-2021: Jewellery - Determination of precious metal content - Difference method usinginductively coupled plasma optical emission spectroscopy
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??.
