GB/T 21198.3-2007
AbolishedDetermination 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
贵金属合金首饰中贵金属含量的测定 ICP光谱法 第3部分:钯合金首饰 钯含量的测定 采用钇为内标