China 'GB/T 21198.1-2007
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 21198.1-2007
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 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
Issued Date:2007-11-12
Implemented Date:2008-07-01
Issued by:
The Standardization Administration of the People's Republic of China
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