EN 16320:2013
(Main)Fertilizers - Determination of trace elements - Determination of mercury by vapour generation (VG) after aqua regia dissolution
Fertilizers - Determination of trace elements - Determination of mercury by vapour generation (VG) after aqua regia dissolution
This European Standard specifies a method for the determination of the content of mercury in fertilizers after extraction with aqua regia and the detection of mercury by vapour generation (VG) coupled to an atomic absorption spectrometer or an inductively coupled plasma atomic emission spectrometer. A limit of quantification of 0,01 mg/kg is to be expected.
Düngemittel - Bestimmung von Elementspuren - Bestimmung von Quecksilber mit Verdampfungstechnik (VG) nach Königswasseraufschluss
Diese Europäische Norm legt ein Verfahren zur Bestimmung von Quecksilber in Düngemitteln mittels Verdampfungstechnik (VG), gekoppelt mit Atomabsorptionsspektrometer oder Atomemissionsspektrometer, mit induktiv gekoppeltem Plasma nach Königswasseraufschluss fest. Die Bestimmungsgrenze ist bei 0,01 mg/kg zu erwarten.
Engrais - Dosage des éléments trace - Détermination du mercure par génération de vapeur (VG) après digestion à l'eau régale
Cette norme européenne spécifie une méthode permettant de déterminer, après extraction à l’eau régale, la teneur en mercure dans les engrais par détection de mercure par génération de vapeur (VG) couplée à un spectromètre d’absorption atomique ou un spectromètre d’émission atomique avec plasma à couplage inductif. Une limite de quantification de 0,01 mg/kg doit être attendue.
Gnojila - Določevanje elementov v sledovih - Določevanje živega srebra s tehniko hladnih par po raztapljanju v zlatotopki
Ta evropski standard določa metodo za določevanje vsebnosti živega srebra v gnojilih po ekstrakciji z zlatotopko in določevanje živega srebra s tehniko hladnih par (VG) z atomskim absorpcijskim spektrometrom ali atomskim emisijskim spektrometrom z induktivno sklopljeno plazmo. Pričakuje se meja kvantifikacije 0,01 mg/kg.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Düngemittel - Bestimmung von Elementspuren - Bestimmung von Quecksilber mit Verdampfungstechnik (VG) nach KönigswasseraufschlussEngrais - Dosage des éléments traces - Détermination du mercure par génération de vapeur (VG) après digestion à l'eau régaleFertilizers - Determination of trace elements - Determination of mercury by vapour generation (VG) after aqua regia dissolution65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 16320:2013SIST EN 16320:2013en,fr,de01-december-2013SIST EN 16320:2013SLOVENSKI
STANDARDSIST-TS CEN/TS 16320:20121DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16320
October 2013 ICS 65.080 Supersedes CEN/TS 16320:2012English Version
Fertilizers - Determination of trace elements - Determination of mercury by vapour generation (VG) after aqua regia dissolution Engrais - Dosage des éléments traces - Détermination du mercure par génération de vapeur (VG) après digestion à l'eau régale
Düngemittel - Bestimmung von Elementspuren - Bestimmung von Quecksilber mit Verdampfungstechnik (VG) nach Königswasseraufschluss This European Standard was approved by CEN on 29 August 2013.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16320:2013: ESIST EN 16320:2013
Results of the inter-laboratory test . 14 Bibliography. 15
6.1 Water, conforming to grade 2 of EN ISO 3696. 6.2 Hydrochloric acid, c(HCl) = 12 mol/l; 37
≈ 1,18 g/ml. 6.3 Nitric acid, c(HNO3) = 16 mol/l; not less than 65 % volume fraction, ρ ≈ 1,42 g/ml. SIST EN 16320:2013
= 1 000 mg/l. Use suitable stock solutions. Single-element stock solutions with adequate specification stating the acid used and the preparation technique are commercially available. It is recommended to use commercially available standard stock solutions for mercury. 6.6 Working standard solutions. Depending on the scope, different working standard solutions may be necessary. In general, the stability of mercury working standard solutions should be checked. 6.6.1 Working standard solution I,
= 10 mg/l for mercury.
Dilute 1,00 ml of the standard stock solution for mercury (6.5) to 100,0 ml with the mixed acid solution (6.4). This solution is used to prepare 200 µg/l mercury working standard solution.
6.6.2 Working standard solution II,
= 200 g/l for mercury. Dilute 2,00 ml of the 10 mg/l mercury working standard solution I (6.6.1) to 100,0 ml with the mixed acid solution (6.4). This solution is used to prepare spiked test solutions and calibration solutions. 6.7 Reducing agents. 6.7.1 General. Tin(II) chloride or sodium borohydride may be used as the reducing agent, but it is not advisable to use the two reagents alternately. Observe the instructions of the manufacturers of the apparatus. The concentration by mass of the reducing agent solutions may be varied to suit the system, and the relevant information provided by the manufacturer of the apparatus shall be observed. 6.7.2 Tin(II) chloride solution, (SnCl2·2H2O) = 100 g/l. Dissolve 50 g of tin(II) chloride in approximately 100 ml of hydrochloric acid (6.2) in a 500 ml volumetric flask and dilute to the mark. Prepare a fresh solution daily. 6.7.3 Sodium borohydride solution, e.g.
= 2 g/l. Dissolve 2 g of sodium hydroxide pellets in water, add 2 g of sodium borohydride and dilute to 1 000 ml with water (6.1). Prepare a fresh solution daily and, when necessary, filter before use. When the analysis procedure is of a longer time, it is recommended to cool the sodium borohydride solution (i.e. with ice around the flask) during its use in the vapour generation ICP-AES or AAS measurement. WARNING — It is essential to observe the safety instructions for working with sodium borohydride. Sodium borohydride forms hydrogen with acids and this can result in an explosive air/hydrogen mixture. A permanent extraction system shall be provided at the point where measurements are carried out. 7 Apparatus 7.1 Common laboratory glassware. 7.2 Analytical balance, capable of weighing to an accuracy of 1 mg. SIST EN 16320:2013
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