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| International Standard Category: Other non-ferrous metals and their alloys |
GB/T 16484.4-2009 Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 4: Determination of thorium oxide content - ArsenazoⅢ spectrophotometry
氯化稀土、碳酸轻稀土化学分析方法 第4部分：氧化钍量的测定 偶氮胂Ⅲ分光光度法 ;
| Category No.: | 77.120.99 | Valid Status: | valid |
| Issued Organization: | AQSIQ; SAC | Issued Date: | 2009-10-30 |
| Implemented Date: | 2010-5-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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