ISO/TS 13899-3:2005 PDF

Steel — Determination of Mo, Nb and W contents in alloyed steel — Inductively coupled plasma atomic emission spectrometric method — Part 3: Determination of W content

Название (английский):

ISO/TS 13899-3:2005

Steel — Determination of Mo, Nb and W contents in alloyed steel — Inductively coupled plasma atomic emission spectrometric method — Part 3: Determination of W content

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 4 марта 2005 г.
Издание:: ISO TS 13899 edition 1 version 1
ICS:: 77.080.20

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Описание (английский):

ISO/TS 13899-1:2005 specifies a method for the determination of tungsten content in steel by means of inductively coupled plasma atomic emission spectrometry.

Технические детали

Технический комитет: ISO/TC 17/SC 1 - Methods of determination of chemical composition
SKU: ISO/TS 13899-3:2005

Abstract

Overview

ISO/TS 13899-3:2005 specifies an analytical procedure for the determination of tungsten (W) content in alloyed steel using inductively coupled plasma atomic emission spectrometry (ICP‑AES / ICP‑OES). The method covers preparation, dissolution, instrument performance checks, matrix‑matched calibration and bracketing, and calculation of results. It is applicable to tungsten mass fractions from 0.1% to 20%.

Keywords: ISO/TS 13899-3:2005, tungsten determination, ICP‑AES, alloyed steel, W content, matrix matching, calibration.

Key topics and technical requirements

Scope and range: Valid for W contents of 0.1–20% (mass fraction).
Sample preparation: Dissolution in a mixture of hydrochloric, nitric and hydrofluoric acids, fuming with a phosphoric/perchloric acid mix, re‑dissolution, filtration and dilution to a defined volume. Test portion sizes depend on expected W content (e.g., 0.5 g for 0.1–5% W; 0.1 g for 5–20% W).
Reagents and standards: Use analytical‑grade reagents and Grade 2 water (ISO 3696). A tungsten stock standard (1 000 mg/L) must be prepared from high‑purity tungsten (≥99.95%); pre‑prepared commercial tungsten standards from third parties are not permitted for this stock solution.
ICP requirements: Nebulizer and spray system must be resistant to hydrofluoric acid. Either simultaneous or sequential spectrometers may be used; if a sequential instrument is used with an internal standard, the internal standard line must be measured simultaneously.
Instrument performance criteria:
- Spectral bandwidth (resolution)

Overview

Keywords: ISO/TS 13899-3:2005, tungsten determination, ICP‑AES, alloyed steel, W content, matrix matching, calibration.

Key topics and technical requirements

Scope and range: Valid for W contents of 0.1–20% (mass fraction).
Sample preparation: Dissolution in a mixture of hydrochloric, nitric and hydrofluoric acids, fuming with a phosphoric/perchloric acid mix, re‑dissolution, filtration and dilution to a defined volume. Test portion sizes depend on expected W content (e.g., 0.5 g for 0.1–5% W; 0.1 g for 5–20% W).
Reagents and standards: Use analytical‑grade reagents and Grade 2 water (ISO 3696). A tungsten stock standard (1 000 mg/L) must be prepared from high‑purity tungsten (≥99.95%); pre‑prepared commercial tungsten standards from third parties are not permitted for this stock solution.
ICP requirements: Nebulizer and spray system must be resistant to hydrofluoric acid. Either simultaneous or sequential spectrometers may be used; if a sequential instrument is used with an internal standard, the internal standard line must be measured simultaneously.
Instrument performance criteria:
- Spectral bandwidth (resolution)

ISO/TS 13899-3:2005 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

Overview

Key topics and technical requirements

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