EN 16963:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.,&3$(6Düngemittel - Bestimmung von Bor, Cobalt, Kupfer, Eisen, Mangan, Molybdän und Zink mit ICP-AESEngrais - Dosage du bore, du cobalt, du cuivre, du fer, du manganèse, du molybdène et du zinc par ICP-AESFertilizers - Determination of boron, cobalt, copper, iron, manganese, molybdenum and zinc using ICP-AES65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 16963:2018SIST EN 16963:2018en,fr,de01-junij-2018SIST EN 16963:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16963
January
t r s z ICS
x wä r z r English Version
Fertilizers æ Determination of boroná cobaltá copperá ironá manganeseá molybdenum and zinc using ICPæAES Engrais æ Dosage du boreá du cobaltá du cuivreá du ferá du manganèseá du molybdène et du zinc par ICPæAES
Düngemittel æ Bestimmung von Borá Cobaltá Kupferá Eisená Manganá Molybdän und Zink mit ICPæAES This European Standard was approved by CEN on
s w October
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:
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 x { x uã t r s z ESIST EN 16963:2018

Statistical results of the inter-laboratory test . 17 Bibliography . 32
10 % as well as contents of > 10 %. The inter-laboratory study reflects the final properties of the method for determination of individual micro-nutrients in water and aqua regia extracts including extraction steps. WARNING — Persons using this European Standard should be familiar with normal laboratory practice. This European Standard does not purport to address all of the safety issues, if any, associated with its use. It is the responsibility of the user to establish appropriate health and safety practices and to ensure compliance with any national regulatory conditions. IMPORTANT — It is absolutely essential that tests conducted according to this European Standard are carried out by suitably trained staff. SIST EN 16963:2018

= 1,4 g/ml. 6.2.1 Diluted nitric acid solution, c(HNO3) = 5 mol/l. Add 350 ml of nitric acid (6.2) to 650 ml of water (6.1). 6.2.2 Diluted nitric acid solution, c(HNO3) = 0,5 mol/l. Dilute 35 ml nitric acid (6.2.) to 1 l with water (6.1). 6.3 Hydrochloric acid, c(HCl) = 12 mol/l;
= 1,18 g/ml. 6.4 Mixed solution, 0,8 mol/l nitric acid and 1,8 mol/l hydrochloric acid. Add 150 ml of hydrochloric acid (6.3) and 56 ml nitric acid (6.2) to 800 ml of water (6.1). 6.5 Standard stock solutions, boron, cobalt, copper, iron, manganese, molybdenum and zinc standard stock solutions,
= 1 000 mg/l for each element. Both single-element stock solutions and multi-element stock solutions with adequate specification, stating the acid used and the preparation technique, are commercially available. Multi-element stock solutions are usually available at the individual mass concentration
= 100 mg/l for each element. These solutions are considered to be stable for more than one year, but in reference to guaranteed stability, the recommendations of the manufacturer should be considered. Alternatively, the stock solutions may be prepared by dissolution of high purity metals. 6.5.1 Standard solution,
= 100 mg/l of element. Use commercially available multi-element solution of this concentration for each element or pipette 10 ml of the appropriate element stock solution (6.5) into a 100 ml volumetric flask. Add 10 ml of diluted nitric acid (6.2.1), fill to the mark with water and mix well. This solution is used to prepare spiked test solutions and calibration solutions. 6.6 Argon, purity 99,95 % or better. 7 Apparatus 7.1 Common laboratory glassware. 7.2 Inductively coupled plasma optical emission spectrometer. WARNING — It is essential that the manufacturer’s safety instructions are strictly observed when using this apparatus. The ICP atomic-emission spectrometer consists of a sample introduction system, the plasma as an excitation source, an optical system, a detector and a computer with suitable software. The sample is transported by the introduction system (rotation tube pump, nebulizer and a spray chamber) to the plasma torch. Around the torch a water cooled RF coil is placed. A frequency from 27 MHz to 56 MHz SIST EN 16963:2018
...