EN 17246:2019

SLOVENSKI STANDARD
01-november-2019
Gnojila - Določevanje perkloratov v mineralnih gnojilih z ionsko kromatografijo in
detekcijo na osnovi prevodnosti (IC-CD)
Fertilizers - Determination of perchlorate in mineral fertilizers by ion chromatography and
conductivity detection (IC-CD)
Düngemittel - Bestimmung von Perchlorat in mineralischen Düngemitteln mit
Ionenchromatographie und Leitfähigkeitdetektion (IC-CD)
Engrais - Détermination du perchlorate dans les engrais minéraux par chromatographie
ionique et détection conductimétrique (IC-CD)
Ta slovenski standard je istoveten z: EN 17246:2019
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17246
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2019
EUROPÄISCHE NORM
ICS 65.080
English Version
Fertilizers - Determination of perchlorate in mineral
fertilizers by ion chromatography and conductivity
detection (IC-CD)
Engrais - Détermination du perchlorate dans les Düngemittel - Bestimmung von Perchlorat in
engrais minéraux par chromatographie ionique et mineralischen Düngemitteln mit
détection conductimétrique (IC-CD) Ionenchromatographie und Leitfähigkeitsnachweis (IC-
CD)
This European Standard was approved by CEN on 7 July 2019.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC 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
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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17246:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 3
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Reagents . 4
6 Apparatus and equipment . 5
7 Sampling and sample preparation . 5
8 Procedure. 6
8.1 Verification of the quantification limit of the method (LOQ method) . 6
8.2 Preparation of the test solutions and sample analysis . 6
9 Calculation and expression of the results . 7
10 Precision . 7
10.1 Quality assurance . 7
10.2 Inter-laboratory test . 7
10.3 Repeatability . 7
10.4 Reproducibility . 7
11 Additional remarks . 8
12 Test report . 8
Annex A (informative) Statistical results of the inter-laboratory test . 9
Bibliography . 10

European foreword
This document (EN 17246:2019) has been prepared by Technical Committee CEN/TC 260 “Fertilizers
and liming materials”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by February 2020, and conflicting national standards
shall be withdrawn at the latest by February 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Turkey and the
United Kingdom.
1 Scope
This document specifies a method for the determination of traces of perchlorate in mineral fertilizers by
ion chromatography and conductivity detection (IC-CD).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12944-1, Fertilizers and liming materials and soil improvers — Vocabulary — Part 1: General terms
EN 12944-2, Fertilizers and liming materials and soil improvers — Vocabulary — Part 2: Terms relating
to fertilizers
EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12944-1 and EN 12944-2
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Principle
The perchlorate content of the fertilizer sample is determined by ion chromatography with conductivity
detection after extraction in water. The ion chromatograph comprises a sample injection part, a
separation part and detection part. For lower noise and background level of detection, a suppressed
conductivity detector may be used. Anion exchange resin is used as stationary phase and aqueous
solutions of monobasic and dibasic salts are used as mobile phase.
5 Reagents
All reagents shall be of recognized analytical grade and shall have negligible concentration of the
element to be determined if compared to the lowest concentration of that element in the sample
solution.
5.1 Water, grade 1 according to EN ISO 3696.
−
5.2 Perchlorate standard solutions, with a mass concentration of ρ( ClO ) = 0,05 mg/l, 0,1 mg/l,
0,3 mg/l, 0,5 mg/l, 0,7 mg/l and 1 mg/l, prepared from a stock solution with verified concentration of
−
perchlorate, e.g. with ρ( ClO ) = 1 000 mg/l.
The 0,5 mg/l calibration standard is used for a regular calibration testing.
−
5.3 Quality control sample, with a mass concentration of ρ( ClO ) = 0,5 mg/l prepared from a
−
solution (e.g. ρ
...