SIST EN 17090:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Düngemittel - Bestimmung des Nitrifikationshemmstoffs DMPSA in Düngemitteln - Verfahren mit Hochleistungs-Flüssigchromatographie (HPLC)Engrais - Dosage de l'inhibiteur de nitrification DMPSA - Méthode par chromatographie liquide à haute performance (HPLC)Fertilizers - Determination of nitrification inhibitor DMPSA in fertilizers - Method using high-performance liquid chromatography (HPLC)65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 17090:2018SIST EN 17090:2018en,fr,de01-december-2018SIST EN 17090:2018SLOVENSKI
STANDARD



SIST EN 17090:2018



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 17090
November
t r s z ICS
x wä r z r English Version
Fertilizers æ Determination of nitrification inhibitor DMPSA in fertilizers æ Method using highæperformance liquid Engrais æ Dosage de l 5inhibiteur de nitrification DMPSA dans les engrais æ Méthode par chromatographie
Düngemittel æ Bestimmung des Nitrifikationshemmstoffs DMPSA in Düngemitteln æ Verfahren mit HochleistungsæFlüssigchromatographie This European Standard was approved by CEN on
t w June
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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
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CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
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t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s y r { rã t r s z ESIST EN 17090:2018



EN 17090:2018 (E) 2 Contents Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 4 4 Principle . 4 5 Reagents . 4 6 Apparatus . 4 7 Sampling and sample preparation . 5 8 Procedure. 5 8.1 Preparation of the test solution . 5 8.2 Preparation of the calibration solutions . 5 8.3 Preparation of the eluents . 5 8.4 HPLC conditions . 5 8.5 HPLC determination . 5 Figure 1 — Chromatogram of DMPSA . 6 9 Calculation and expression of the results . 6 10 Precision . 7 10.1 Inter-laboratory test . 7 10.2 Repeatability . 7 10.3 Reproducibility . 7 Table 1 — Mean values, repeatability and reproducibility limits . 7 11 Test report . 7 Annex A (informative)
Results of the inter-laboratory test . 8 Table A.1 — Statistical results of the inter-laboratory trial . 8 Bibliography . 9 SIST EN 17090:2018



EN 17090:2018 (E) 3 European foreword This document (EN 17090:2018) 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 May 2019, and conflicting national standards shall be withdrawn at the latest by May 2019. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 17090:2018



EN 17090:2018 (E) 4 1 Scope This document specifies a method for the determination of nitrification inhibitor 2-(3,4-dimethyl-pyrazol-1-yl)-succinic acid (DMPSA) using high-performance liquid chromatography (HPLC), which is applicable to all mineral fertilizers. 2 Normative references The following documents a
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