ISO 9647:2020 PDF

Steel — Determination of vanadium content — Flame atomic absorption spectrometric method (FAAS)

Название (английский):

ISO 9647:2020

Steel — Determination of vanadium content — Flame atomic absorption spectrometric method (FAAS)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 16
Дата публикации:: 7 февраля 2020 г.
Издание:: ISO IS 9647 edition 2 version 1
ICS:: 77.080.01

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Описание (английский):

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 %.

Технические детали

Технический комитет: ISO/TC 17/SC 1 - Methods of determination of chemical composition
SKU: ISO 9647:2020

Abstract

Overview

ISO 9647:2020 defines a standardized laboratory procedure for the determination of vanadium in steel using flame atomic absorption spectrometry (FAAS). The method covers vanadium mass fractions from 0.01 % to 0.80 %, and specifies sample preparation, reagents, instrumentation and performance checks required to produce reliable, comparable results in metallurgical and analytical laboratories.

Key topics and technical requirements

Analytical technique: Flame atomic absorption spectrometric method (FAAS) with nebulisation into an acetylene/nitrous oxide flame and measurement of the 318.4 nm vanadium spectral line (vanadium hollow‑cathode lamp).
Scope limits: Applicable for vanadium content 0.01–0.80 % (mass fraction). Applicability is conditional on tungsten ≤ 1.0 % and/or titanium ≤ 0.5 % in a 1.0 g test portion.
Sample preparation: Complete dissolution using hydrochloric, nitric and perchloric acids, addition of an aluminium chloride buffer, filtration and volumetric dilution to prepare the final test solution.
Calibration and standards: Preparation of matrix-matched calibration solutions from certified vanadium standard solutions; recommended calibration ranges and test portion masses (e.g., ~1.00 g for low vanadium, ~0.20 g for higher contents).
Instrument performance criteria:
- Limit of detection for vanadium in a matrix similar to the test solution: **

Overview

Key topics and technical requirements

Analytical technique: Flame atomic absorption spectrometric method (FAAS) with nebulisation into an acetylene/nitrous oxide flame and measurement of the 318.4 nm vanadium spectral line (vanadium hollow‑cathode lamp).
Scope limits: Applicable for vanadium content 0.01–0.80 % (mass fraction). Applicability is conditional on tungsten ≤ 1.0 % and/or titanium ≤ 0.5 % in a 1.0 g test portion.
Sample preparation: Complete dissolution using hydrochloric, nitric and perchloric acids, addition of an aluminium chloride buffer, filtration and volumetric dilution to prepare the final test solution.
Calibration and standards: Preparation of matrix-matched calibration solutions from certified vanadium standard solutions; recommended calibration ranges and test portion masses (e.g., ~1.00 g for low vanadium, ~0.20 g for higher contents).
Instrument performance criteria:
- Limit of detection for vanadium in a matrix similar to the test solution: **

ISO 9647:2020 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

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