This document specifies a flame atomic absorption spectrometric method (FAAS) for the determination of the vanadium content in steel. The method is applicable to vanadium contents between 0,01 % (mass fraction) and 0,80 % (mass fraction), provided that the tungsten content in a 1,0 g test portion is not higher than 1,0 % and/or the titanium content is not higher than 0,5 %.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
6.1 Atomic absorption spectrometer
6.2 Ancillary equipment
7 Sampling
8 Procedure
8.1 Test portion
8.2 Blank test
8.3 Determination
9 Expression of results
9.1 Use of the calibration curve
9.2 Use of bracketing method
10 Precision
11 Test report
Annex A Additional information on the international interlaboratory test (informative)
Annex B Graphical representation of precision data (informative)
Annex C Procedures for the determination of instrumental criteria (normative)
ISO 1042:1998 Laboratory glassware — One-mark volumetric flasks
ISO 14284:1996 Steel and iron — Sampling and preparation of samples for the determination of chemical composition
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
ISO 1042:1998 Laboratory glassware — One-mark volumetric flasks
ISO 14284:1996 Steel and iron — Sampling and preparation of samples for the determination of chemical composition
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
ISO 648:2008 Laboratory glassware — Single-volume pipettes