GB/T 21198.2-2007
贵金属合金首饰中贵金属含量的测定 ICP光谱法 第2部分:铂合金首饰 铂含量的测定 采用所有微量元素与铂强度比值法
Determination of precious metals in precious metals j ewellery alloys.Method using ICP spectrometry.Part 2:Platinum jewellery alloys--Determination of platinum.Method using the intensity ratios of all minor constituents with reference to platinum
GBT21198.2-2007, GB21198.2-2007