ISO 17072-1-2019 PDF

Full title and description

ISO 17072-1:2019 — Leather — Chemical determination of metal content — Part 1: Extractable metals. This international standard specifies a laboratory method to determine metals that can be extracted from leather under simulated sweat conditions and measured by modern instrumental techniques (ICP-OES, ICP-MS, AAS, atomic fluorescence).

Abstract

Specifies an extraction procedure using an acid artificial-perspiration solution (pH ~5.5) at controlled temperature and time, followed by instrumental determination of extractable metals. The method is non‑compound specific and is particularly suitable for assessing extractable chromium from chromium‑tanned leather. Results are reported on a dry‑matter basis and include requirements for blanks, dilution and reporting.

General information

• Status: Published (International Standard).
• Publication date: February 2019 (edition 2, 2019).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.140.30 — Leather and furs.
• Edition / version: Edition 2 (2019).
• Number of pages: 8 (ISO technical publication).

Scope

Applies to the chemical determination of extractable metals from leather using extraction with an acid artificial‑perspiration solution and subsequent instrumental analysis. The procedure covers a wide range of metals (for example Al, As, Ba, Cd, Cr, Co, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Sb, Se, Sn, Ti, V, Zn, Zr) and is used to assess metals that can migrate from leather in contact with skin. It is not a compound‑specific method or one that distinguishes oxidation states of an element.

Key topics and requirements

• Extraction medium: acid artificial‑perspiration solution prepared in accordance with ISO 105‑E04 (histidine, NaCl, phosphate buffer; pH ~5.5).
• Extraction conditions: typical extraction at (37 ± 2) °C for 4 h ± 5 min (sample mass and solution volume specified; options for limited sample amounts are given).
• Analytical techniques permitted: ICP‑OES, ICP‑MS, atomic absorption spectrometry (AAS) and atomic fluorescence spectrometry (SFA) (method-specific preparation and acidification of extracts are described).
• Reporting: results as mass fraction (mg/kg) on dry matter, with blank corrections, dilution factors and limits of detection/quantification considered.
• Applicability notes: suitable for routine laboratory testing of finished leather and particularly suitable for chromium‑tanned leathers when assessing extractable chromium.

Typical use and users

Used by leather testing laboratories, quality departments in tanneries and footwear/textile manufacturers, conformity assessment bodies and regulatory authorities to evaluate extractable metal content for product safety, regulatory compliance and consumer health risk assessments. The method supports product specifications, supplier testing and investigation of discoloration or allergy‑related complaints.

Related standards

Part of the ISO 17072 series on chemical determination of metal content in leather. Closely related standards include ISO 17072‑2 (Total metal content — digestion methods) and complementary methods such as ISO 105‑E04 (artificial perspiration) and ISO 5398 series (chromium compounds in leather). National and regional adoptions (EN, DIN, UNI, etc.) exist and later revisions of Part 2 have been published.

Keywords

leather; extractable metals; artificial perspiration; ICP‑OES; ICP‑MS; AAS; atomic fluorescence; chromium; metal migration; product safety; chemical testing.

FAQ

Q: What is this standard?

A: ISO 17072‑1:2019 is an international test method that specifies how to determine metals extractable from leather using an acid artificial‑perspiration extraction and instrumental analysis.

Q: What does it cover?

A: It covers preparation of extracts from leather under simulated sweat conditions, analytical options (ICP‑OES, ICP‑MS, AAS, SFA), reporting conventions (mg/kg dry matter) and quality‑control measures; it is not compound‑specific nor a method for total metal digestion.

Q: Who typically uses it?

A: Accredited testing laboratories, tanneries, footwear and leather goods manufacturers, compliance officers and regulators use the standard to assess extractable metal levels and to support product safety and regulatory compliance.

Q: Is it current or superseded?

A: Part 1 was published as Edition 2 in February 2019 and is the published international standard for extractable metals. Other parts of the ISO 17072 series (for example Part 2 on total metals) have seen subsequent revisions at national and regional levels; check the relevant national body for the latest status of Part 2 or later consolidated editions.

Q: Is it part of a series?

A: Yes — ISO 17072 is a multi‑part series addressing chemical determination of metal content in leather (Part 1: extractable metals; Part 2: total metal content; and related technical guidance standards).

Q: What are the key keywords?

A: Extractable metals, leather testing, artificial perspiration, ICP‑OES, ICP‑MS, AAS, chromium, metal migration, mg/kg (dry matter).