SIST EN 17050:2017
(Main)Animal feeding stuffs: Methods of sampling and analysis - Determination of iodine in animal feed by ICP-MS
Animal feeding stuffs: Methods of sampling and analysis - Determination of iodine in animal feed by ICP-MS
This European standard specifies a method for the determination of iodine in animal feeding stuffs by inductively coupled plasma mass spectrometry (ICP-MS) following extraction with an alkaline solution.
This method was successfully tested in the range of 0,70 to 631 mg/kg in following animal feeds: seaweed meal, mineral premixture, fish meal, plant based ingredient, marine based compound feed and a synthetic iodine solution.
Futtermittel - Probenahme- und Untersuchungs-verfahren - Bestimmung von Iod in Futtermitteln mittels Anionenaustausch ICP-MS
Diese Europäische Norm legt ein Verfahren zur Bestimmung von Iod in Futtermitteln mit der Massenspektrometrie und induktiv gekoppeltem Plasma (ICP-MS) nach dessen Extraktion mit einer alkalischen Lösung fest.
Dieses Verfahren wurde im Bereich von 0,70 mg/kg bis 631 mg/kg in folgenden Futtermitteln angewendet: Seealgenmehl, Mineralstoffvormischung, Fischmehl, pflanzlicher Wirkstoff, Mischfutter aus Meerestieren und eine synthetische Iodlösung.
Aliments pour animaux - Méthodes d’échantillonnage et d’analyse - Dosage de l’iode dans les aliments pour animaux par spectrométrie de masse à plasma induit par haute fréquence (ICP-MS)
La présente Norme européenne spécifie une méthode de dosage de l’iode dans les aliments des animaux par spectrométrie de masse à plasma induit par haute fréquence (ICP-MS) après extraction avec une solution alcaline.
Cette méthode a été soumise à essai avec succès dans la plage de 0,70 mg/kg à 631 mg/kg avec les aliments des animaux suivants : farine d’algue, prémélange minéral, farine de poisson, ingrédient à base de plante, aliments composés d’origine marine et une solution d’iode synthétique.
Krma: metode vzorčenja in analize - Določevanje joda v krmi z masno spektrometrijo z induktivno sklopljeno plazmo (ICP-MS)
Ta evropski standard določa metodo za določevanje joda v krmi z masno spektrometrijo z induktivno sklopljeno plazmo (ICP-MS) po ekstrakciji z alkalno raztopino.
Ta metoda je bila uspešno preskušena v razponu od 0,70 do 631 mg/kg pri naslednjih vrstah krme: moka iz morskih alg, mineralni premiks, ribja moka, rastlinska sestavina, morska krmna mešanica in sintetična raztopina joda.
General Information
- Status
- Published
- Public Enquiry End Date
- 19-Dec-2016
- Publication Date
- 12-Oct-2017
- Technical Committee
- KŽP - Agricultural food products
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 05-Oct-2017
- Due Date
- 10-Dec-2017
- Completion Date
- 13-Oct-2017
Overview
EN 17050:2017 - published by CEN - specifies a validated laboratory method for the determination of iodine in animal feeding stuffs using inductively coupled plasma mass spectrometry (ICP‑MS) following alkaline extraction. The procedure was successfully tested across a measured range of 0.70 to 631 mg/kg in diverse feed matrices such as seaweed meal, mineral premixtures, fish meal, plant‑based ingredients, marine compound feeds and a synthetic iodine solution.
Key topics and technical requirements
- Sample extraction: Iodine is extracted from a representative test portion using a strong alkaline solution of tetramethylammonium hydroxide (TMAH) and incubated (example conditions in the standard: 90 °C for 3 hours).
- Analytical technique: Quantification is performed by ICP‑MS, using an internal standard (e.g., tellurium) and matched matrix/calibration solutions to control signal stability and matrix effects.
- Calibration and blanks: The standard describes preparation of calibration solutions (example levels: 5, 20 and 50 µg/L) and a zero member compensation solution that matches TMAH and internal standard content of samples.
- Reagents and apparatus: Use of trace‑quality reagents and low‑iodine water (EN ISO 3696), gas‑tight glass or high‑temperature plastics, syringe membrane filters, and ICP‑MS instrumentation.
- Quality criteria: The document sets requirements for limit of quantification (LOQ), precision (repeatability and reproducibility) and reporting. Results of an inter‑laboratory test are included to support method performance.
- Safety and traceability: Warnings about hazardous reagents and guidance to minimize blanks and contamination are provided.
Practical applications
- Regulatory compliance: Verify iodine content against feed labeling or statutory limits.
- Quality control: Routine testing of premixes, mineral feeds, marine ingredients and compound feeds to ensure correct fortification.
- Risk monitoring: Detect excessive iodine levels in seaweed‑rich or marine feeds that may impact animal health or food‑chain transfer.
- Method transfer: Standardized ICP‑MS procedure for laboratories implementing iodine testing workflows.
Who should use this standard
- Feed testing laboratories and QC teams in feed manufacturing
- Regulatory bodies and official control laboratories
- Raw material suppliers (seaweed, fish meal, mineral premixes)
- Animal nutritionists and researchers conducting feed composition analyses
Related standards
- EN 15111 - Determination of iodine by ICP‑MS (foodstuffs)
- EN ISO 3696 - Water for analytical laboratory use
- EN ISO 6497 / 6498 - Sampling and sample preparation for animal feeding stuffs
Using EN 17050:2017 helps ensure reliable, comparable iodine measurements across laboratories and feed types, supporting feed safety, labeling accuracy and nutritional management.
Frequently Asked Questions
SIST EN 17050:2017 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Animal feeding stuffs: Methods of sampling and analysis - Determination of iodine in animal feed by ICP-MS". This standard covers: This European standard specifies a method for the determination of iodine in animal feeding stuffs by inductively coupled plasma mass spectrometry (ICP-MS) following extraction with an alkaline solution. This method was successfully tested in the range of 0,70 to 631 mg/kg in following animal feeds: seaweed meal, mineral premixture, fish meal, plant based ingredient, marine based compound feed and a synthetic iodine solution.
This European standard specifies a method for the determination of iodine in animal feeding stuffs by inductively coupled plasma mass spectrometry (ICP-MS) following extraction with an alkaline solution. This method was successfully tested in the range of 0,70 to 631 mg/kg in following animal feeds: seaweed meal, mineral premixture, fish meal, plant based ingredient, marine based compound feed and a synthetic iodine solution.
SIST EN 17050:2017 is classified under the following ICS (International Classification for Standards) categories: 65.120 - Animal feeding stuffs. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 17050:2017 is associated with the following European legislation: EU Directives/Regulations: 882/2004; Standardization Mandates: M/522. 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.QRFuttermittel - Probenahme- und Untersuchungs-verfahren - Bestimmung von Iod in Futtermitteln mittels Anionenaustausch ICP-MSAliments pour animaux - Méthodes d’échantillonnage et d’analyse - Dosage de l’iode dans les aliments pour animaux par spectrométrie de masse à plasma induit par haute fréquence (ICP-MS)Animal feeding stuffs: Methods of sampling and analysis - Determination of iodine in animal feed by ICP-MS65.120KrmilaAnimal feeding stuffsICS:Ta slovenski standard je istoveten z:EN 17050:2017SIST EN 17050:2017en,fr,de01-november-2017SIST EN 17050:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 17050
September
t r s y ICS
x wä s t r English Version
Animal feeding stuffsã Methods of sampling and analysis æ Determination of iodine in animal feed by ICPæMS Aliments pour animaux æ Méthodes d 5échantillonnage et d 5analyse æ Dosage de l 5iode dans les aliments pour animaux par spectrométrie de masse à plasma induit
Futtermittel æ Probenahmeæ und Untersuchungsæverfahren æ Bestimmung von Iod in Futtermitteln mittels Anionenaustausch ICPæMS This European Standard was approved by CEN on
t z June
t r s yä
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 Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United 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 y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s y r w rã t r s y ESIST EN 17050:2017
= 1 000 mg/l . 6 4.5 Standard solutions . 6 4.5.1
= 10 mg/l . 6 4.5.2 Tellurium standard solution (internal standard) . 6 4.6 Iodine calibration solutions . 6 4.6.1 General . 6 4.6.2 Calibration solution 1 -
= 5 µg/l. 7 4.6.3 Calibration solution 2 -
= 20 µg/l . 7 4.6.4 Calibration solution 3 -
= 50 µg/l . 7 4.7 Zero member compensation solution. 7 5 Apparatus and equipment . 7 5.1 General . 7 5.2 Containers . 7 5.3 Plastic syringes . 7 5.4 Membrane filters . 7 5.5 Ultracentrifuge . 8 5.6 Drying oven . 8 5.7 Inductively coupled plasma mass spectrometer (ICP-MS). 8 5.8 Tubes . 8 6 Sampling . 8 6.1 General . 8 6.2 Sampling procedure . 8 7 Procedure. 8 7.1 Sample preparation . 8 7.2 Iodine extraction . 8 7.3 Preparation of sample and blank solutions . 9 7.4 Determination of iodine by ICP-MS . 9 7.4.1 General . 9 7.4.2 Preparation of apparatus . 9 7.4.3 Calibration . 9 7.4.4 Determination . 10 8 Calculation . 10 SIST EN 17050:2017
Results of the inter-laboratory test . 12 Bibliography . 15
= 250 g/l, (mass fraction w = 25 %), suitable for trace analysis with an iodine content of less than 1 µg/l. SIST EN 17050:2017
= 1 000 mg/l Dissolve 1,250 8 g of tellurium dioxide (TeO2) in 4 mol/l hydrochloric acid (HCl) and dilute to 1 000 ml with water. 4.5 Standard solutions 4.5.1
= 10 mg/l Pipette 1 ml of the iodine stock solution (4.4.2) into a 100 ml volumetric flask and dilute to the mark with water. This solution is stable for about four weeks and is used to prepare the calibration solutions in 4.6. 4.5.2 Tellurium standard solution (internal standard) Prepare e.g. a 10 mg/l standard tellurium solution by pipetting 1 ml of the tellurium stock solution (4.4.3) into a 100 ml volumetric f
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