Lanthanum oxide, cerium oxide, neodymium oxide, gadolinium oxide--Determination of cobalt, iron, manganese, nichel, copper, ckromium, lead and zinc in oxides contents--Emission spectrographic method GB/T 12690.14-1990

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Standard Insuued on: 1990-12

GB/T 12690.14-1990 Lanthanum oxide, cerium oxide, neodymium oxide, gadolinium oxide--Determination of cobalt, iron, manganese, nichel, copper, ckromium, lead and zinc in oxides contents--Emission spectrographic method

稀土金属及其氧化物化学分析方法发射光谱法测定氧化镧、氧化铈、氧化钕、氧化钆中钴

Category No.:	GB	Valid Status:	superseded
Issued Organization:		Issued Date:	1990-12-30
Implemented Date:	1992-1-1	Abolished Date:
Superseded Standard.:	GB/T 12690.5-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides Determination of Al、Cr、Mn、Fe、Co、Ni、Cu、Zn、Pb content by inductively coupled plasma atomic emission spectrographic method Determination of Co、Mn、Pb、Ni	Superseded Date:

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GB/T 678-1990 GB/T 12600-1990 GB/T 12545.1-2008 GB/T 12529.1-2008 GB/T 12529.3-2008 GB 13022-1991 GB/T 12690.21-1990 GB/T 12689.5-1990 GB/T 12689.3-1990 GB/T 12689.1-1990 GB/T 12690.14-1990 GB/T 12690.13-1990 GB 2367-1990 GB/T 12689.4-1990 GB/T 12690.8-1990 GB/T 12689.8-1990 GB/T 12689.14-1990 GB/T 12761-1991 GB/T 12690.25-1990 GB/T 12689.6-1990

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