ISO 1053-1975 PDF

Full title and description

ISO 1053:1975 — Zinc — Determination of copper content — Spectrophotometric method. This International Standard specifies two spectrophotometric methods for determining trace copper in zinc of different purities (including Zn 99,995; Zn 99,99; Zn 99,95; Zn 99,5; Zn 98,5). The methods cover low-level and higher-level copper determinations appropriate for quality control and metallurgical analysis.

Abstract

ISO 1053:1975 defines two spectrophotometric procedures for the quantitative determination of copper in zinc. The first method is intended for very low copper contents (approximately 0.0005 % to 0.005 %) and the second for higher ranges (approximately 0.0025 % to 0.1 %). The standard includes reagent specifications, sample preparation notes, and measurement procedures necessary to obtain reproducible results.

General information

• Status: Withdrawn.
• Publication date: 31 May 1975 (first edition, 1975).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.120.60 — Lead, zinc, tin and their alloys.
• Edition / version: First edition (1975).
• Number of pages: 4 pages.

Scope

This standard specifies two spectrophotometric methods for determining copper content in zinc and zinc alloys. The first method is suitable for copper contents between about 0.0005 % and 0.005 %, and the second for copper contents between about 0.0025 % and 0.1 %. The methods are applicable to commercially produced zinc grades as defined by the relevant ISO references. The standard gives the essential reagents, recommended sample handling (including precautions when mixing reagents such as cooling because of volatile reagents), and measurement procedures to achieve accurate determinations.

Key topics and requirements

• Two spectrophotometric procedures tailored to different copper concentration ranges (0.0005–0.005 % and 0.0025–0.1 %).
• Applicability to a range of zinc purities (e.g., Zn 99,995; Zn 99,99; Zn 99,95; Zn 99,5; Zn 98,5).
• Specification of required reagents (including methanolic acetaldehyde solutions) and instructions on safe handling (cooling during reagent mixing due to acetaldehyde volatility).
• Sample preparation and dissolution steps to ensure representative aliquots for spectrophotometric measurement.
• Calibration and use of reference solutions and blanks to determine copper concentration from absorbance readings.
• Precision and limit-of-detection guidance appropriate to the two concentration ranges so laboratories can assess method suitability.

Typical use and users

Laboratories performing chemical analysis of metal products, metallurgical quality-control teams, zinc producers and refiners, independent testing and certification bodies, and research laboratories concerned with trace-metal determination in zinc and zinc alloys. The methods are primarily used where spectrophotometric determination of copper is preferred for routine QC or where instrumental resources fit the method’s requirements.

Related standards

ISO 1053:1975 was prepared by ISO/TC 18 (Zinc and zinc alloys) and is connected historically with ISO Recommendation R 1053 (its predecessor). The methods reference the types of zinc defined in related ISO reference documents (for example the ISO/R/ISOIR zinc designation references). Users often consult other ISO analytical-method standards for metals and the broader ISO/TC 18 work programme when implementing or updating procedures.

Keywords

zinc; copper; spectrophotometric method; chemical analysis; trace metals; metallurgical analysis; ISO 1053; ISO/TC 18; zinc purity.

FAQ

Q: What is this standard?

A: ISO 1053:1975 is an ISO International Standard titled "Zinc — Determination of copper content — Spectrophotometric method", which describes two spectrophotometric procedures for measuring copper in zinc.

Q: What does it cover?

A: It covers sample preparation, reagents, and spectrophotometric measurement procedures for two copper concentration ranges (approx. 0.0005–0.005 % and 0.0025–0.1 %) in various commercial zinc purities. It also gives guidance on calibration and precautions for reagent handling.

Q: Who typically uses it?

A: Analytical and metallurgical laboratories, zinc producers and refiners, quality-control departments, and certification or inspection bodies that require validated procedures for copper determination in zinc.

Q: Is it current or superseded?

A: The ISO record for ISO 1053:1975 indicates the standard is Withdrawn (it is listed with a withdrawal status in ISO lifecycle information). Users should check current ISO catalogues or national standards bodies for any newer methods or replacement standards before relying on this 1975 text for regulatory or compliance purposes.

Q: Is it part of a series?

A: ISO 1053:1975 sits within ISO work on zinc and zinc alloys under ISO/TC 18 and is related by subject area to other ISO analytical and materials standards; it evolved from an earlier ISO Recommendation (R 1053). For a full series view, consult ISO/TC 18 publications and related ISO chemical-analysis standards.

Q: What are the key keywords?

A: zinc; copper; spectrophotometry; trace analysis; metal analysis; quality control; ISO 1053.