ISO 11437:2018 PDF

Nickel alloys — Determination of lead — Electrothermal atomic absorption spectrometric method

Название (английский):

ISO 11437:2018

Nickel alloys — Determination of lead — Electrothermal atomic absorption spectrometric method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 3 января 2018 г.
Издание:: ISO IS 11437 edition 1 version 1
ICS:: 77.120.40

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Описание (английский):

ISO 11437:2018 specifies an electrothermal atomic absorption spectrometric method for the determination of lead in the range of 1 µg/g to 10 µg/g in nickel alloys.

Технические детали

Технический комитет: ISO/TC 155 - Nickel and nickel alloys
SKU: ISO 11437:2018

Abstract

Overview

ISO 11437:2018 specifies an electrothermal atomic absorption spectrometric (ETAAS) method for the determination of lead (Pb) in nickel alloys. The standard covers routine laboratory procedures to measure lead in the range 1 µg/g to 10 µg/g. It replaces and merges the earlier ISO 11437-1:1994 and ISO 11437-2:1994 editions and is intended for use in materials testing and quality control of nickel-based alloys.

Key topics and requirements

Scope and range: Determination of lead in nickel alloys from 1 µg/g to 10 µg/g using ETAAS.
Principle: Dissolve a test portion in a nitric/hydrofluoric acid mixture, prepare aliquots with a chemical modifier, inject into an electrothermal atomizer and measure atomic absorption at 283.3 nm using a lead hollow-cathode lamp.
Sample preparation: Typical test portion is 0.500 g dissolved in nitric/hydrofluoric acid and diluted to 100 ml. Clean samples (remove oil/grease) and riffle heterogeneous samples as required.
Reagents and modifier: Includes nitric acid, hydrofluoric acid (with HF safety warning), nickel base solutions, and a nickel nitrate‑ammonium phosphate modifier.
Instrumentation: ETAAS with pyrolytic graphite tube and L’vov platform (or graphite tube), background correction, fast recording for peak area/height, injection volume typically 20 µl (adjustable by instrument sensitivity).
Performance criteria (Annex A):
- Limit of detection:

Overview

Key topics and requirements

Scope and range: Determination of lead in nickel alloys from 1 µg/g to 10 µg/g using ETAAS.
Principle: Dissolve a test portion in a nitric/hydrofluoric acid mixture, prepare aliquots with a chemical modifier, inject into an electrothermal atomizer and measure atomic absorption at 283.3 nm using a lead hollow-cathode lamp.
Sample preparation: Typical test portion is 0.500 g dissolved in nitric/hydrofluoric acid and diluted to 100 ml. Clean samples (remove oil/grease) and riffle heterogeneous samples as required.
Reagents and modifier: Includes nitric acid, hydrofluoric acid (with HF safety warning), nickel base solutions, and a nickel nitrate‑ammonium phosphate modifier.
Instrumentation: ETAAS with pyrolytic graphite tube and L’vov platform (or graphite tube), background correction, fast recording for peak area/height, injection volume typically 20 µl (adjustable by instrument sensitivity).
Performance criteria (Annex A):
- Limit of detection:

ISO 11437:2018 PDF

Технические детали

Abstract

Overview

Key topics and requirements

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Abstract

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