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