SIST EN 15111:2007
(Main)Foodstuffs - Determination of trace elements - Determination of iodine by ICP-MS (inductively coupled plasma mass spectrometry)
Foodstuffs - Determination of trace elements - Determination of iodine by ICP-MS (inductively coupled plasma mass spectrometry)
This European Standard specifies an extraction method for the determination of iodine compounds in foodstuffs by inductively coupled plasma mass spectrometry (ICP-MS).
Lebensmittel - Bestimmung von Elementspuren - Bestimmung von Iod mit der ICP-MS (Massenspektrometrie mit induktiv gekoppeltem Plasma)
Produits alimentaires - Dosage des éléments traces - Dosage de l'iode par spectrométrie d'émission avec plasma induit par haute fréquence et spectrometre de masse (ICP-SM)
Živila - Določevanje elementov v sledovih - Določevanje joda v dietetični hrani z ICP-MS (masno spektrometrijo z induktivno sklopljeno plazmo)
General Information
Relations
Overview
SIST EN 15111:2007 is a European Standard developed by the Comité Européen de Normalisation (CEN) for the determination of iodine in foodstuffs using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). This standard specifies a robust extraction and analytical method designed to accurately measure trace levels of iodine compounds present in diverse food matrices. Recognized across various European countries, SIST EN 15111:2007 replaces its earlier technical specification (CEN/TS 15111:2005), offering enhanced precision and reliability in food trace element analysis.
Key features of the standard include an alkaline extraction using tetramethylammonium hydroxide (TMAH), sample preparation guidelines, and identification of instrumental parameters tailored to ICP-MS analysis. This method ensures sensitive, reproducible iodine quantification essential for food safety, nutritional assessment, and regulatory compliance.
Key Topics
Scope and Purpose
Specifies extraction and quantification methods for iodine in food using ICP-MS, focusing on trace element determination regulated by strict performance criteria.Extraction Procedure
Iodine compounds are extracted using a strong alkaline reagent (TMAH) at elevated temperature (90±3 °C) to solubilize iodine from samples effectively. Subsequent filtration or centrifugation removes particulates.Reagents and Calibration
High-purity TMAH solutions with minimal iodine contamination are essential. Calibration uses iodine standards prepared from potassium iodate (KIO3), complemented by tellurium as an internal standard to correct for ionization and matrix effects.Instrumentation and Optimization
ICP-MS instrumentation demands careful setup:- Proper nebulizer chamber selection to reduce memory effects and improve washout.
- Monitoring iodine at mass 127; tellurium internal standard at isotopes 125, 126, or 128.
- Rigorous flushing sequences to prevent carry-over between samples.
Sample Handling and Preparation
Emphasizes sample homogenization, control of particle size (<0.3 mm for dry samples), and storage in sealed vessels, minimizing iodine loss due to air and light exposure.Data Calculation and Reporting
Iodine concentration in food samples is calculated considering sample mass, extract volume, and dilution factors, with quantification limits down to 0.5 µg/L under ideal conditions.Safety and Quality Control
Highlights the need for safety measures when handling hazardous reagents and stresses compliance with normative references such as EN 13804, which governs general performance criteria for trace element analysis in food.
Applications
This standard is integral for laboratories and quality control units in:
Food Industry
Verifying iodine levels in processed foods, dietary supplements, and fortified products to meet labeling and nutritional guidelines.Regulatory Authorities
Enforcing food safety regulations by monitoring iodine content in imports and domestic products to protect public health.Nutritional Research
Supporting studies on dietary iodine intake and environmental exposure through precise trace element measurement.Analytical Method Development
Facilitating advancement and validation of trace analysis techniques for iodine and other elements in complex food matrices.Quality Assurance
Ensuring consistent results across laboratories via inter-laboratory tests and standardization of test methods.
Related Standards
EN 13804:2002
Foodstuffs - Determination of trace elements - Performance criteria, general considerations and sample preparation
Provides complementary guidelines for performance criteria and sample prep applicable alongside EN 15111.ISO 17025
General requirements for the competence of testing and calibration laboratories
Supports quality management for labs applying EN 15111 for iodine testing.CEN/TC 275 Horizontal Methods
Covers various standardized methods for food analysis, providing a framework within which EN 15111 operates.
Practical Value and Keywords
SIST EN 15111:2007 enables accurate, reproducible iodine quantification critical for food safety and nutritional labeling. By defining a standardized extraction and ICP-MS procedure, it reduces variability in analytical results and supports regulatory adherence. The method’s sensitivity suits trace levels typical in diverse foods, while its use of tellurium as an internal standard corrects matrix effects for improved precision.
Key SEO terms: iodine determination, ICP-MS food analysis, trace elements in food, iodine extraction method, EN 15111 standard, food safety testing, tetramethylammonium hydroxide extraction, food trace element analysis, iodine quantification method.
Frequently Asked Questions
SIST EN 15111:2007 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Foodstuffs - Determination of trace elements - Determination of iodine by ICP-MS (inductively coupled plasma mass spectrometry)". This standard covers: This European Standard specifies an extraction method for the determination of iodine compounds in foodstuffs by inductively coupled plasma mass spectrometry (ICP-MS).
This European Standard specifies an extraction method for the determination of iodine compounds in foodstuffs by inductively coupled plasma mass spectrometry (ICP-MS).
SIST EN 15111:2007 is classified under the following ICS (International Classification for Standards) categories: 67.050 - General methods of tests and analysis for food products. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 15111:2007 has the following relationships with other standards: It is inter standard links to SIST-TS CEN/TS 15111:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 15111:2007 is associated with the following European legislation: Standardization Mandates: M/422 REV1. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Foodstuffs - Determination of trace elements - Determination of iodine by ICP-MS (inductively coupled plasma mass spectrometry)Produits alimentaires - Dosage des éléments traces - Dosage de l'iode par spectrométrie d'émission avec plasma induit par haute fréquence et spectrometre de masse (ICP-SM)Lebensmittel - Bestimmung von Elementspuren - Bestimmung von Iod mit der ICP-MS (Massenspektrometrie mit induktiv gekoppeltem Plasma)Ta slovenski standard je istoveten z:EN 15111:2007SIST EN 15111:2007en;fr;de67.050Splošne preskusne in analizne metode za živilske proizvodeGeneral methods of tests and analysis for food productsICS:SIST-TS CEN/TS 15111:20051DGRPHãþDSLOVENSKI
STANDARDSIST EN 15111:200701-julij-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15111March 2007ICS 67.050Supersedes CEN/TS 15111:2005
English VersionFoodstuffs - Determination of trace elements - Determination ofiodine by ICP-MS (inductively coupled plasma massspectrometry)Produits alimentaires - Dosage des éléments traces -Dosage de l'iode par spectrométrie d'émission avec plasmainduit par haute fréquence et spectromètre de masse (ICP-SM)Lebensmittel - Bestimmung von Elementspuren -Bestimmung von Iod mit der ICP-MS(Massenspektrometrie mit induktiv gekoppeltem Plasma)This European Standard was approved by CEN on 21 January 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15111:2007: E
Results of the inter-laboratory test.11 Bibliography.12
un-dissolved components, the nebulized solution is atomized and ionized in an inductively coupled argon plasma. The ions are extracted from the plasma by a system of sampler and skimmer cones, separated in a mass spectrometer on the basis of their mass/charge ratio and determined using a pulse counting detector system. WARNING — The use of this European Standard may involve hazardous materials, operations and equipment. This European Standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of this European Standard to establish appropriate safety and health practices and determine the applicability or regulatory limitations prior to use. 4 Reagents 4.1 General The concentration of iodine in the reagents and water used shall be low enough not to affect the results of the determination, e.g. different qualities of TMAH are available. It is important to check, that the iodine content is low enough for the analysis. 4.2 Tetramethylammonium hydroxide (TMAH = (CH3)4N+OH-) solution,
mass concentration ρ = 250 g/l, (mass fraction w = 25 %), suitable for trace analysis with an iodine content of less than 1 µg/l. 4.3 Diluted tetramethylammonium hydroxide (TMAH) solution Dilute TMAH solution for preparing the zero member compensation and calibration solutions, with a concentration to suit that of the sample solution (see 7.3). Prepare a 0,5 % TMAH solution by diluting 1,0 ml of TMAH solution (4.2) to 50 ml with water. 4.4 Stock solutions 4.4.1 General Commercial stock solutions may be used as an alternative to the solutions described below.
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