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| International Standard Category: Cadmium, cobalt and their alloys |
YS/T 540.4-2006 Vanadium -- Determination of iron content -- Phenanthrline spectrophotometric method
钒化学分析方法 邻菲啰啉光度法测定铁量 ;
| Category No.: | 77.120.70 | Valid Status: | superseded |
| Issued Organization: | Issued Date: | 2006-7-27 | |
| Implemented Date: | 2006-10-11 | Abolished Date: | |
| Superseded Standard.: | YS/T 540.4-2018 Methods for chemical analysis of vanadium- Part 4:Determination of iron content- 1，10-phenanthroline spectrophotometry |
Superseded Date: | 2019-4-1 |
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