Determination of precious metals in precious metals jewellery 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
GB/T 21198的本部分规定了应用ICP光谱仪采用所有微量素与铂强度比值法测定铂合金首饰中杂质素的总量来确定铂含量的方法。本部分适用于GB 11887所规定铂首饰的纯度范围。