GB/T 15076.7-2020 Active
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
Abstract
This part of GB/T 15076 specifies the method for determining the phosphorus content in niobium.
This part is applicable to the determination of phosphorus content in niobium and niobium hydroxide, and niobium carbide. Method I: 4-methyl-pentanone-[2] extraction and separation of phosphorus, and determination by molybdenum blue spectrophotometry. The measurement range is 0.001% to 0.050%; Method II: inductively coupled plasma atomic emission spectrometry. The measurement range is 0.001% to 0.080%. When the measurement ranges of Method I and Method II overlap, Method I is the arbitration analysis method.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 15076.7-2020 |
| CCS | Analysis methods for rare metals and their alloys |
| ICS | Other non-ferrous metals and their alloys |
| Implement Date | 2021-02-01 |