Praseodymium oxide-Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide GB/T 12690.6-2003 - Chinese Category:GB/T 12690.6-2003

English Title:	Praseodymium oxide-Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide
Chinese Title:	稀土金属及其氧化物中非稀土杂质化学分析方法铁量的测定硫氰酸钾、1，10-二氮杂菲分光光度法
Standard No.:	GB/T 12690.6-2003
Category No.:	H14
Issued by:	AQSIQ
Issued on:	1990-01-02
Implemented on:	2004-6-1
Status:	superseded
Superseded by:	GB/T 12690.6-2017 Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides - Part 6: Determination of iron content - Kslium thiocyanate, 1, 10-Phenanthroline spectrophotometric method
Superseded on:	2018-5-1
Abolished on:
Superseding:	GB 11074.3-1989 氧化钐化学分析方法硫氰酸钾-1 10-二氮杂菲光度法测定铁量
Word Count:	1500 words
Similar Standards:	YS/T 230.1-1994 YS/T 230.3-1994 GB/T 16480.1-1996 YS/T 230.5-1994 GB/T 16480.4-1996 YS/T 230.6-1994 GB/T 18115.7-2000 GB/T 18115.10-2000 YS/T 230.2-1994 GB 11074.2-1989 YS/T 230.7-1994 GB/T 18115.8-2000 GB/T 18116.2-2000 YB 1503-1977 GB/T 18115.2-2000 YS/T 474-2005 GB/T 18115.6-2000 GB/T 18115.5-2000 GB/T 18115.4-2000 YS/T 230.4-1994

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