GB/T 21198.3-2007
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
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