行业标准

GB/T 21198.1-2007 贵金属合金首饰中贵金属含量的测定ICP光谱法第1部分:铂合金首饰铂含量的测定采用钇为内标

Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 1:Platinum jewellery alloys—Determination of platinum—Method using a solution with yttrium as internal standard element

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