EN 16711-1:2015

Textiles - Determination of metal content - Part 1: Determination of metals using microwave digestion

This European Standard specifies a procedure for determination of metals, in particular antimony (Sb), arsenic (As), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), lead (Pb), mercury (Hg), nickel (Ni) in natural and man-made textiles, including coated fabrics and garment components (e.g. buttons, zips, etc.) after microwave digestion.

Textilien - Bestimmung des Metallgehaltes - Teil 1: Bestimmung von Metallen mittels Mikrowellenaufschluss

Diese technische Europäische Norm legt ein Verfahren zur Bestimmung von Metallen, insbesondere von Antimon (Sb), Arsen (As), Cadmium (Cd), Chrom (Cr), Cobalt (Co), Kupfer (Cu), Blei (Pb), Quecksilber (Hg), Nickel (Ni) in natürlichen und synthetischen Textilien, einschließlich beschichteten Geweben und Bekleidungsbestandteilen (z. B. Knöpfen, Reißverschlüssen usw.) nach Mikrowellenaufschluss fest.

Textiles - Détermination de la teneur en métaux - Partie 1: Dosage des métaux par minéralisation par micro-ondes

La présente Norme européenne spécifie un mode opératoire de dosage des métaux, en particulier l'antimoine (Sb), l'arsenic (As), le cadmium (Cd), le chrome (Cr), le cobalt (Co), le cuivre (Cu), le plomb (Pb), le mercure (Hg) et le nickel (Ni), dans les textiles naturels ou synthétiques, y compris les tissus enduits, et dans les composants de vêtements (par exemple, les boutons, les fermetures à glissière, etc.) après minéralisation par micro-ondes.

Tekstilije - Določevanje kovin - 1. del: Določevanje kovin z uporabo mikrovalovnega razklopa

Opisuje postopek za določevanje antimona (Sb), arzena (As), kadmija (Cd), kroma Cr), kobalta (Co), bakra (Cu), svinca (Pb), živega srebra (Hg), niklja (Ni) v naravnih in umetnih tekstilnih vlaknih po mikrovalovnem razklopu.

General Information

• Status: Published
• Publication Date: 03-Nov-2015
• ICS: 59.060.01 - Textile fibres in general
• Technical Committee: CEN/TC 248 - Textiles and textile products
• Drafting Committee: CEN/TC 248/WG 26 - Methods of test for phthalates
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 16-Jul-2021
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 16711-1:2016 - Textiles - Determination of metal content - Part 1: Determination of metals using microwave digestion

Overview

EN 16711-1:2015 is a CEN European Standard that specifies a laboratory procedure for determination of metal content in textiles and related products using microwave digestion followed by instrumental analysis. The method targets trace and regulated metals-antimony (Sb), arsenic (As), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), lead (Pb), mercury (Hg), nickel (Ni)-in natural and man‑made textiles, coated fabrics and garment components (e.g., buttons, zips).

Key Topics and Technical Requirements

• Scope and target metals: Lists specific metals of concern in textiles and accessories.
• Sample preparation: Representative subsamples are cut (avoid metal contamination), with typical sample masses:
  • Textiles: 0.1–0.5 g (record to 0.1 mg)
  • Paint/coatings: ~0.1–0.2 g or 100–200 mg scraped
• Microwave digestion: Uses PTFE vessels and high‑pressure microwave systems. Typical digestion reagent examples:
  • Textiles: nitric acid (HNO3) + hydrogen peroxide (H2O2) (e.g., 10 ml HNO3 + 4 ml H2O2 or 8 ml HNO3 + 2.5 ml H2O2)
  • Metallic parts: 9 ml HNO3 + 3 ml HCl
  • Siliceous materials (ceramics/glass): may require hydrofluoric acid (HF)
• Apparatus and reagents: Analytical balance (0.0001 g readability), microwave digestion system, PTFE liners, HNO3, H2SO4, HF, H2O2, Grade 2 water and certified metal standards.
• Analytical techniques: After digestion, metals are quantified by ICP‑MS, ICP‑OES, AAS (including graphite furnace and cold‑vapour for Hg), in accordance with referenced water/trace element standards.
• Quality control & reliability: Method includes digestion blanks, use of certified reference materials, requirements for trueness/precision (ISO 5725‑4), and guidance on limits of detection/quantification (Annex B).
• Special sample handling: Guidance on grinding, cryomilling, cleaning to avoid cross‑contamination and separation of coatings from substrates.

Applications and Users

• Who uses it: Textile testing laboratories, manufacturers, quality assurance teams, compliance officers, regulatory authorities and third‑party certifiers.
• Practical uses:
  • Regulatory compliance and chemical safety (restricted substances)
  • Product safety testing (children’s clothing, accessories)
  • Supplier quality control and incoming material inspection
  • Failure analysis and root‑cause investigation (e.g., metal contamination)
• Why it matters: Provides a validated, reproducible way to quantify hazardous metals in textiles and components to support consumer safety, product stewardship and compliance with European chemical regulations.

Related Standards

• EN 16711-2 (metal extraction by artificial perspiration)
• Normative analytical references: EN ISO 11885 (ICP‑OES), EN ISO 17294‑2 (ICP‑MS), EN ISO 15586 (GFAAS), EN ISO 12846 / EN ISO 17852 (Hg methods), EN 1233 (Cr AAS)
• ISO 3696 (laboratory water quality), ISO 5725‑4 (trueness)

Keywords: EN 16711-1:2015, textile metal content, microwave digestion, metal determination in textiles, ICP‑MS, AAS, ICP‑OES, trace metals testing.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.DERTextilien - Bestimmung von Metallen - Teil 1: Bestimmung von Metallen mittels MikrowellenaufschlussTextiles - Détermination de la teneur en métaux - Partie 1: Dosage des métaux par minéralisation par micro-ondesTextiles - Determination of metal content - Part 1: Determination of metals using microwave digestion59.060.01Tekstilna vlakna na splošnoTextile fibres in generalICS:Ta slovenski standard je istoveten z:EN 16711-1:2015SIST EN 16711-1:2016en,fr,de01-januar-2016SIST EN 16711-1:2016SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16711-1
November
t r s w ICS
w {ä r x rä r s English Version
Textiles æ Determination of metal content æ Part
sã Determination of metals using microwave digestion Textiles æ Détermination de la teneur en métaux æ Partie
sã Dosage des métaux par minéralisation par microæondes
Textilien æ Bestimmung von Metallen æ Teil
sã Bestimmung von Metallen mittels Mikrowellenaufschluss This European Standard was approved by CEN on
w September
t r s wä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s w CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x y s sæ sã t r s w ESIST EN 16711-1:2016

Laboratory microwave procedure . 10 A.1 Cleaning of polytetrafluoroethylene glassware and vessels . 10 A.2 Sample preparation (digestion) . 10 Annex B (informative)
Procedure characteristics . 12 B.1 Trueness complying with ISO 5725-4 . 12 B.2 System precision . 13 B.3 Limit of detection and limit of quantification . 13 Bibliography . 14
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