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Chinese National Standard Category: Rare metals and their alloys analysis method |
English Title: | Neodymium and samarium-Determination of oxygen content-Impulse-infrared absorption method |
Chinese Title: | 稀土金属及其氧化物中非稀土杂质化学分析方法钍量的测定 偶氮胂III分光光度法和电感耦合等离子体质谱法 |
Standard No.: | GB/T 12690.12-2003 |
Category No.: | H14 |
Issued by: | AQSIQ |
Issued on: | 2004-06-01 |
Implemented on: | 2004-6-1 |
Status: | to be superseded |
Superseded by: | GB/T 12690.12-2024 |
Superseded on: | 2024-11-1 |
Abolished on: | |
Superseding: | GB/T 12690.15-1990 Rare-earth metals and their oxides--Determination of thorium content--Arsenazo Ⅲ spectrophotometric method |
Word Count: | 4500 words |
Similar Standards: | YS/T 230.1-1994 YS/T 230.3-1994 YS/T 230.5-1994 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 18115.5-2000 YS/T 230.4-1994 GB/T 18115.3-2000 GB/T 18115.9-2000 GB/T 43489-2023 GB/T 43358-2023 |
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