China 'GB/T 12689.4-2004
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 12689.4-2004
The methods for chemical analysis of zinc and zinc alloys--The determination of copper content--The lead diethyldithio-carbamate spectrophotometric method and the flame atomic absorption spectrometric method and the electrolytic method 锌及锌合金化学分析方法 铜量的测定 二乙基二硫代氨基甲酸铅分光光度法、火焰原子吸收光谱法和电解法
Issued Date:2004-04-30
Implemented Date:2004-10-01
Issued by:
The Standardization Administration of the People's Republic of China
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