ISO 22961:2008 PDF

Titanium and titanium alloys — Determination of iron — Atomic absorption spectrometry

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Title (English):

ISO 22961:2008

Titanium and titanium alloys — Determination of iron — Atomic absorption spectrometry

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: January 7, 2008
Edition:: ISO IS 22961 edition 1 version 1
ICS:: 77.120.50

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Description (English):

ISO 22961:2008 specifies an atomic absorption spectrometric method for the determination of the mass fraction of iron in titanium and titanium alloys. The method is applicable to titanium and titanium alloys with a mass fraction of iron in the range from 0,005 % to 2,0 %.

Technical details

Technical committee: ISO/TC 79/SC 11 - Titanium
SKU: ISO 22961:2008

Abstract

Overview

ISO 22961:2008 specifies an atomic absorption spectrometric (AAS) method for determining the mass fraction of iron (Fe) in titanium and titanium alloys. The method covers samples with iron mass fractions from 0.005 % to 2.0 % (m/m). It defines sample size, reagents, apparatus, calibration, measurement conditions and result calculations for routine laboratory analysis.

Key Topics and Requirements

Scope and applicability: Intended for titanium and titanium alloys; iron range 0.005–2.0 %.
Sample size and sampling: Test portion of 0.50 g, with at least duplicate determinations; sampling procedure to be agreed until a dedicated sampling standard is published.
Reagents and reference materials: Analytical-grade reagents and water (ISO 3696 grade 2). Key reagents include hydrochloric (HCl), hydrofluoric (HF), nitric (HNO3) acids, boric acid, and certified iron standard solutions prepared as described.
Sample preparation: Dissolve the test portion in HCl and HF, oxidize with HNO3, add boric acid, and dilute to volumetric solution for AAS measurement.
Instrumentation and settings: Atomic absorption spectrometer with an iron hollow cathode lamp; wavelength 248.3 nm; air/acetylene flame specified.
Calibration and working curve: Calibration solutions are prepared by fortifying titanium digests with known iron standards; a working curve (absorbance vs. mg Fe/100 ml) is constructed and shifted to pass through the origin for sample quantification.
Calculation and reporting: Provides formulae for converting measured concentrations to mass fraction (WFe) with separate expressions for

Related standards

Mentioned in the description and other ISO standards

Overview

Key Topics and Requirements

Scope and applicability: Intended for titanium and titanium alloys; iron range 0.005–2.0 %.
Sample size and sampling: Test portion of 0.50 g, with at least duplicate determinations; sampling procedure to be agreed until a dedicated sampling standard is published.
Reagents and reference materials: Analytical-grade reagents and water (ISO 3696 grade 2). Key reagents include hydrochloric (HCl), hydrofluoric (HF), nitric (HNO3) acids, boric acid, and certified iron standard solutions prepared as described.
Sample preparation: Dissolve the test portion in HCl and HF, oxidize with HNO3, add boric acid, and dilute to volumetric solution for AAS measurement.
Instrumentation and settings: Atomic absorption spectrometer with an iron hollow cathode lamp; wavelength 248.3 nm; air/acetylene flame specified.
Calibration and working curve: Calibration solutions are prepared by fortifying titanium digests with known iron standards; a working curve (absorbance vs. mg Fe/100 ml) is constructed and shifted to pass through the origin for sample quantification.
Calculation and reporting: Provides formulae for converting measured concentrations to mass fraction (WFe) with separate expressions for

ISO 22961:2008 PDF

Technical details

Abstract

Overview

Key Topics and Requirements

Related standards

Abstract

Overview

Key Topics and Requirements

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