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| International Standard Category: Cadmium, cobalt and their alloys |
GB/T 15076.7-1994 Methods for chemical analysis of tantalum and niobium-Determination of phospherus content in niobium
钽铌化学分析方法 铌中磷量的测定 ;
| Category No.: | 77.120.70 | Valid Status: | superseded |
| Issued Organization: | State Technical Supervision Bureau | Issued Date: | 1994-05-09 |
| Implemented Date: | 1994-1-2 | Abolished Date: | |
| Superseded Standard.: | GB/T 15076.7-2020 Methods for chemical analysis of tantalum and niobium—Part 7:Determination of phospherus content in niobium—4-Formyloxy-pentyl ketone-2 extraction separation phosphomolybdate blue spectrophotometry and inductively coupled plasma atomic emission spectrometry |
Superseded Date: | 2021-2-1 |
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