EN 17042:2018
(Main)Fertilizers - Determination of boron in concentrations > 10 % using acidimetric titration
Fertilizers - Determination of boron in concentrations > 10 % using acidimetric titration
This European Standard specifies a method for the determination of total and water extractable boron in mineral fertilizers containing more than 10 % boron.
This method is applicable to water and aqua regia fertilizer extracts obtained according to EN 16962 and/or EN 16964.
NOTE A method used for the determination of boron in mineral fertilizers containing less than or equal to 10 % of boron (spectrophotometric determination by azomethine-H) can be also used for the scope of this method after appropriate dilution of the extracts.
Düngemittel - Bestimmung von Bor in Konzentrationen > 10 % durch azidimetrische Titration
Diese Europäische Norm legt ein Verfahren zur Bestimmung von Gesamt- und aus Wasser extrahierbarem Bor in mineralischen Düngemitteln, die mehr als 10 % Bor enthalten, fest.
Dieses Verfahren ist auf Wasser und Königswasser Extrakte von Düngemitteln anwendbar, die nach EN 16962 und/oder EN 16964 erhalten wurden.
Das Verfahren kann nach entsprechender Verdünnung der Extrakte auch für die Bestimmung von Bor in mineralischen Düngemitteln, die weniger oder gleich 10 % Bor enthalten (spektrophotometrische Bestimmung mit Azomethin H), verwendet werden.
Engrais - Dosage du bore dans des concentrations > 10 % par titrage acidimétrique
La présente Norme européenne spécifie une méthode pour le dosage du bore total et du bore extractible à l’eau dans des engrais minéraux contenant plus de 10 % de bore.
Cette méthode est applicable aux extraits d’engrais aqueux et à l’eau régale obtenus conformément à l’EN 16962 et/ou à l’EN 16964.
NOTE Une méthode utilisée pour le dosage du bore dans des engrais minéraux contenant moins de ou égal à 10 % de bore (dosage spectrophotométrique avec l’azométhine H) peut également être utilisée dans le cadre du domaine d’application de la présente méthode après dilution appropriée des extraits.
Gnojila - Določevanje bora v koncentracijah, večjih od 10 %, s kislinsko titracijo
Ta evropski standard določa postopek za določevanje skupne vsebnosti bora in bora, ki ga je mogoče ekstrahirati z vodo, v mineralnih gnojilih, ki vsebujejo več kot 10 % bora.
Ta metoda se uporablja za ekstrakte gnojil v vodi in zlatotopki, pridobljene v skladu s standardom prEN 16962 in/ali prEN 16964.
OPOMBA: Metodo, ki se uporablja za določevanje vsebnosti bora v mineralnih gnojilih, ki vsebujejo manj kot 10 % bora (spektrofotometrično določevanje z azometinom-H), je mogoče uporabiti tudi za obseg te metode po ustreznem redčenju ekstraktov.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Düngemittel - Bestimmung von Bor in Konzentrationen > 10 % durch azidimetrische TitrationEngrais - Dosage du bore dans des concentrations > 10 % par titration acidimétriqueFertilizers - Determination of boron in concentrations > 10 % using acidimetric titration65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 17042:2018SIST EN 17042:2018en,fr,de01-september-2018SIST EN 17042:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 17042
June
t r s z ICS
x wä r z r English Version
Fertilizers æ Determination of boron in concentrations
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s r
¨ using acidimetric titration Engrais æ Dosage du bore dans des concentrations
µ
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¨ par titrage acidimétrique
Düngemittel æ Bestimmung von Bor in Konzentrationen
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¨ durch azidimetrische Titration This European Standard was approved by CEN on
t x February
t r s zä
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:
Rue de la Science 23,
B-1040 Brussels
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 v tã t r s z ESIST EN 17042:2018
European foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 5 4 Principle . 5 5 Sampling and sample preparation . 5 6 Reagents . 6 7 Apparatus . 6 8 Procedure. 7 8.1 Test solution . 7 8.2 Blank solution . 7 8.3 Boron (B) value of the sodium hydroxide solution (6.5) . 7 9 Calculation and expression of the results . 8 10 Test report . 8 Annex A (informative)
Verification data — Comparison of ICP-AES method and acidimetric titration method . 9 A.1 Introduction . 9 A.2 Validation based on water extraction. 9 A.2.1 Test materials used in the validation study . 9 A.2.2 Results of the validation study . 9 A.2.3 Conclusions . 10 A.3 Validation based on aqua regia extraction . 10 A.3.1 Test materials used in the validation study . 10 A.3.2 Results of the validation study . 11 A.3.3 Conclusions . 12 Bibliography . 13
= 100 mg/l. Weigh to the nearest 0,1 mg 0,571 9 g of boric acid (H3BO3), dissolve in water (6.1), transfer quantitatively into a 1 000 ml volumetric flask (7.6), make up to volume with water (6.1) and mix thoroughly. Transfer to a plastic bottle for storage in a refrigerator at 4 °C to 8 °C. Commercially available stock solution with adequate specification may be used. The solution is generally considered to be stable for one year, but in reference to guaranteed stability, the recommendations of the manufacturer shall be considered. 6.7 D-mannitol, (C6H14O6) powder. 6.8 Sodium chloride (NaCl). 7 Apparatus 7.1 pH meter, with glass electrode. 7.2 Magnetic stirrer. 7.3 Beaker, capacity 400 ml. 7.4 Polytetrafluoroethylene (PTFE) (Teflon®)1) rod. 7.5 Volumetric flasks, capacity 100 ml.
1) This information is given for the convenience of users of this document and does not constitute an endorsement by CEN of the product named. Equivalent products may be used if they can be shown to lead to the same results. SIST EN 17042:2018
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