ISO 1054-1975 PDF

Full title and description

ISO 1054:1975 — Zinc — Determination of cadmium content — Polarographic method. This International Standard specifies a polarographic analytical procedure for determining cadmium in commercial grades of zinc (Zn 99.95, Zn 99.5, Zn 98.5 and Zn 98) for cadmium concentrations in the range 0.01 % to 0.5 %. It excludes zinc in which the copper content is more than four times the cadmium content.

Abstract

The standard defines sample preparation, required reagents and apparatus, polarographic measurement parameters, calculation and expression of results for cadmium in zinc using a polarographic technique. It is a short procedural standard (original publication comprised two pages) intended for laboratory quality control and chemical analysis in metallurgical contexts.

General information

• Status: Withdrawn / no longer active for sale in ISO catalogue.
• Publication date: June 1975 (Edition 1, 1975).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.120.60 (Lead, zinc, tin and their alloys).
• Edition / version: Edition 1 (1975).
• Number of pages: 2 pages (original publication).

Key bibliographic and lifecycle details are recorded in ISO’s catalogue and in national standards repositories.

Scope

Applies to the determination of cadmium content in specified commercial zinc grades (Zn 99.95, Zn 99.5, Zn 98.5 and Zn 98) when cadmium is present in the range 0.01 % to 0.5 %. The method is not applicable where copper content exceeds about four times the cadmium content because of interference. The procedure covers polarographic measurement conditions, sample dissolution and the calculation of cadmium percentage in the zinc sample.

Key topics and requirements

• Polarographic analytical technique specific to cadmium detection in zinc matrices.
• Applicable zinc grades and quantitative range: 0.01 % to 0.5 % cadmium.
• Restrictions regarding interferences, notably elevated copper relative to cadmium.
• Specification of sample preparation (dissolution) and reagents appropriate for polarography.
• Measurement parameters, calibration/standards and calculation of concentration.
• Expressing results and reporting limits of applicability for the method.

Typical use and users

Used by metallurgical and chemical analysis laboratories, zinc producers and quality-control laboratories concerned with alloy composition and impurity reporting. Typical users include process control chemists, QA/QC personnel in non-ferrous metal production, and laboratories performing regulatory or contract-specified compositional analysis.

Related standards

Equivalent or related national standards and older analytical standards addressing cadmium determination in zinc and similar alloys have been published (for example NBN P 32 005:1977 listed as identical and NFA 06 814:1967 noted as similar in historical product records). More recent analytical standards and methods (including other ISO and national methods for metal impurity analysis) may replace or supersede this withdrawn standard for current laboratory practice.

Keywords

ISO 1054, zinc analysis, cadmium determination, polarography, metal analysis, Zn 99.95, impurity analysis, ISO/TC 18, ICS 77.120.60, withdrawn standard.

FAQ

Q: What is this standard?

A: ISO 1054:1975 is an International Standard that specified a polarographic method for determining cadmium content in certain commercial zinc grades.

Q: What does it cover?

A: It covers sample types, the applicable cadmium concentration range (0.01 % to 0.5 %), restrictions due to copper interference, required procedure elements for polarographic measurement, and calculation/expression of results.

Q: Who typically uses it?

A: Metallurgical laboratories, zinc producers, quality assurance and analytical chemistry laboratories performing impurity analysis in non-ferrous metals.

Q: Is it current or superseded?

A: ISO 1054:1975 has been withdrawn (it no longer appears as an active ISO publication in the ISO catalogue entry). National repositories list withdrawal/withdrawn-from-sale status; users should consult current ISO catalogues or national bodies for any replacement or more recent methods.

Q: Is it part of a series?

A: It sits within the ICS field 77.120.60 (lead, zinc, tin and their alloys) and was prepared under ISO/TC 18 (metallurgical committees). It is one of several ISO documents historically dealing with chemical analysis of non-ferrous metals; however, it is a standalone method rather than a numbered multipart series.

Q: What are the key keywords?

A: Cadmium, zinc, polarography, metal analysis, impurity determination, ISO 1054, non‑ferrous metallurgy.