FprEN 17703

Plant biostimulants - Determination of chromium(VI)

This document was developed to provide a method for verifying that hexavalent chromium (CrVI) is not present in plant biostimulants in a concentration that exceeds the respective limits outlined in the EU Regulation on Fertilising Products [1].
This document is applicable to all types of plant biostimulants (solid and liquid ) used in agriculture.
The method described is suitable to quantify the chromium(VI) content in plant biostimulants down to 2 mg/kg.
The results obtained from this method are strictly dependent on the extraction conditions. Results obtained by using other extraction procedures (extraction solution, pH, extraction time, etc.) are not comparable with the results produced by the procedure described in this document. Therefore, this document is highly recommended to quantify the chromium(VI) content in blends of fertilizing products containing plant biostimulants, independently of the percentage of the different parts forming the blend.

Pflanzen-Biostimulanzien - Bestimmung von Chrom(VI)

Dieses Dokument wurde erarbeitet, um ein Verfahren für die Verifizierung bereitzustellen, dass sechswertiges Chrom (CrVI) nicht in einer Konzentration in Pflanzen-Biostimulanzien vorhanden ist, die die in der EU Verordnung zu Düngeprodukten [1] aufgeführten Grenzwerte übersteigt.
Dieses Dokument ist anzuwenden für alle Arten von Pflanzen-Biostimulanzien (in fester Form und in flüssiger Form ), die in der Landwirtschaft eingesetzt werden.
Das beschriebene Verfahren ist geeignet, den Chrom(VI)-Gehalt in Pflanzen-Biostimulanzien ab 2 mg/kg quantitativ zu bestimmen.
Die mit dem beschriebenen Verfahren erzielten Ergebnisse sind streng von den Extraktionsbedingungen abhängig. Ergebnisse, die mit anderen Extraktionsverfahren (Extraktionslösung, pH Wert, Extraktionszeit usw.) erzielt wurden, sind nicht mit den Ergebnissen vergleichbar, die mit dem in diesem Dokument beschriebenen Verfahren erzielt wurden. Daher wird dieses Dokument ausdrücklich für die quantitative Bestimmung des Chrom(VI)-Gehalts in Mischungen von Düngeprodukten, die Pflanzen-Biostimulanzien enthalten, empfohlen, unabhängig vom prozentualen Anteil der verschiedenen Bestandteile innerhalb der Mischung.

Biostimulants des végétaux - Dosage du chrome(VI)

Le présent document a été élaboré pour fournir une méthode permettant de vérifier que le chrome hexavalent (CrVI) n’est pas présent dans les biostimulants des végétaux à une concentration dépassant les limites correspondantes indiquées dans le Règlement UE sur les fertilisants [1].
Le présent document s’applique à tous les types de biostimulants des végétaux (solides et liquides ) utilisés en agriculture.
La méthode décrite est adaptée à la quantification dans les biostimulants des végétaux de teneurs en chrome(VI) à partir de 2 mg/kg.
Les résultats obtenus avec cette méthode sont strictement tributaires des conditions d’extraction. Les résultats obtenus avec d’autres modes opératoires d’extraction (solution d’extraction, pH, durée d’extraction, etc.) ne sont pas comparables aux résultats acquis avec le mode opératoire décrit dans le présent document. Par conséquent, il est vivement recommandé d’utiliser le présent document pour quantifier la teneur en chrome(VI) dans les mélanges de fertilisants contenant des biostimulants des végétaux, indépendamment du pourcentage des différentes parties formant le mélange.

Rastlinski biostimulanti - Določevanje kroma Cr(VI)

General Information

• Status: Not Published
• Publication Date: 10-Apr-2024
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 455 - Plant Biostimulants and Agricultural Micro-Organisms
• Drafting Committee: CEN/TC 455/WG 4 - Other safety parameters
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 12-Oct-2023
• Due Date: 10-Oct-2023
• Completion Date: 12-Oct-2023
• Directive: 2019/1009 - Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003
• Mandate: M/564 - Fertilising products in support of Regulation (EU) 2019/1009
• Mandate: M/564 AMD 1 - amending Implementing Decision C(2020) 612 as regards certain harmonised standards and standardisation deliverables, deadlines for their adoption and the duration of the validity of the standardisation request
• Ref Project: oSIST prEN 17703:2023 - Plant biostimulants - Determination of chromium(VI)

Relations

• Revises: CEN/TS 17703:2022 - Plant biostimulants - Determination of chromium(VI)
• Effective Date: 15-Mar-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 17703:2023
01-maj-2023
Rastlinski biostimulanti - Določevanje kroma Cr(VI)
Plant biostimulants - Determination of chromium(VI)
Pflanzen-Biostimulanzien - Bestimmung von Chrom(VI)
Biostimulants des végétaux - Dosage du chrome(VI)
Ta slovenski standard je istoveten z: prEN 17703
ICS:
65.080 Gnojila Fertilizers
oSIST prEN 17703:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17703:2023

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oSIST prEN 17703:2023


DRAFT
EUROPEAN STANDARD
prEN 17703
NORME EUROPÉENNE

EUROPÄISCHE NORM

May 2023
ICS 65.080 Will supersede CEN/TS 17703:2022
English Version

Plant biostimulants - Determination of chromium(VI)
Biostimulants des végétaux - Dosage du chrome(VI) Pflanzen-Biostimulanzien - Bestimmung von
Chrom(VI)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 455.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17703:2023 E
worldwide for CEN national Members.

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oSIST prEN 17703:2023
prEN 17703:2023 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 6
5 Chemicals . 6
6 Apparatus and materials . 7
7 Procedure . 8
7.1 Sampling and preparation of samples. 8
7.2 Preparation of analytical solution . 8
7.3 Chromatographic conditions . 8
7.4 Calibration . 8
7.5 Determination of the recovery rate .
...