ISO 22033:2011 PDF

Nickel alloys — Determination of niobium — Inductively coupled plasma/atomic emission spectrometric method

Название (английский):

ISO 22033:2011

Nickel alloys — Determination of niobium — Inductively coupled plasma/atomic emission spectrometric method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 23 августа 2011 г.
Издание:: ISO IS 22033 edition 2 version 1
ICS:: 77.120.40

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Описание (английский):

ISO 22033:2011 specifies an inductively coupled plasma/atomic emission spectrometric method for the determination of the mass fraction of niobium between 0,1 % and 10 % in nickel alloys.

Технические детали

Технический комитет: ISO/TC 155 - Nickel and nickel alloys
SKU: ISO 22033:2011

Abstract

Overview

ISO 22033:2011 specifies an Inductively Coupled Plasma / Atomic Emission Spectrometric (ICP‑AES) method for the determination of niobium mass fraction (0.1 % to 10 %) in nickel alloys. The standard defines sample dissolution, spectrometer performance criteria, matrix‑matched calibration and bracketing procedures to ensure accurate, interference‑minimized measurement of niobium in complex alloy matrices.

Key Topics and Requirements

Scope: Quantitative determination of niobium in nickel alloys in the range 0.1–10 % by mass.
Analytical principle: Dissolve a 0.25 g test portion using a mixture of HF, HCl, HNO3 and H3PO4 with perchloric‑acid fuming, add HF (and optional internal standard), dilute to 100 mL, nebulize into ICP‑AES and measure niobium emission lines.
Calibration strategy: Close matrix‑matching of calibration solutions and bracketing (prepare two standards at ~75–95 % and 105–125 % of the estimated niobium concentration) so matrix interferences are compensated automatically. Accurate knowledge of major alloy components is required; if unknown, perform semi‑quantitative analysis first.
Performance criteria for ICP/AES:
- Sequential spectrometers: bandwidth (FWHM)

Overview

Key Topics and Requirements

Scope: Quantitative determination of niobium in nickel alloys in the range 0.1–10 % by mass.
Analytical principle: Dissolve a 0.25 g test portion using a mixture of HF, HCl, HNO3 and H3PO4 with perchloric‑acid fuming, add HF (and optional internal standard), dilute to 100 mL, nebulize into ICP‑AES and measure niobium emission lines.
Calibration strategy: Close matrix‑matching of calibration solutions and bracketing (prepare two standards at ~75–95 % and 105–125 % of the estimated niobium concentration) so matrix interferences are compensated automatically. Accurate knowledge of major alloy components is required; if unknown, perform semi‑quantitative analysis first.
Performance criteria for ICP/AES:
- Sequential spectrometers: bandwidth (FWHM)

ISO 22033:2011 PDF

Технические детали

Abstract

Overview

Key Topics and Requirements

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Abstract

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