BS ISO 4942:2016
$102.76
Steels and irons. Determination of vanadium content. N-BPHA spectrophotometric method
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 20 |
This document specifies an N-benzoylphenylhydroxylamine (N-BPHA) spectrophotometric method for the determination of vanadium in steels and cast irons.
This document is applicable to vanadium contents between 0 ,005 % and 0,50 % (mass fraction).
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents |
| 9 | 6 Apparatus 7 Sampling 8 Procedure 8.1 Test portion 8.2 Blank test |
| 10 | 8.3 Determination 8.3.1 Preparation of the test solution 8.3.2 Oxidation of vanadium 8.3.3 Colour development and extraction 8.3.4 Spectrophotometric measurements |
| 11 | 8.4 Establishment of the calibration curve 8.4.1 Preparation of the calibration solutions 8.4.2 Spectrophotometric measurements 8.4.3 Plotting of the calibration curve 9 Expression of results 9.1 Method of calculation |
| 12 | 9.2 Precision |
| 13 | 10 Special cases 11 Test report |
| 14 | Annex A (informative) Additional information on the international interlaboratory test |
| 15 | Annex B (informative) Graphical representation of precision data |
| 16 | Bibliography |
