SIST EN 13652:2002
(Main)Soil improvers and growing media - Extraction of water soluble nutrients and elements
Soil improvers and growing media - Extraction of water soluble nutrients and elements
This European Standard specifies a method for the routine extraction of water-soluble extractable nutrients and elements (as listed in annex B) in soil improvers or growing media.
The method is not applicable to liming materials and preformed materials such as mineral wool slabs and foam slabs.
NOTE The requirements of the standard may differ from the national legal requirements for the declaration of the products concerned.
Bodenverbesserungsmittel und Kultursubstrate - Extraktion wasserlöslicher Nährstoffe und Elemente
Diese Europäische Norm legt ein Verfahren zur routinemäßigen Extraktion wasserlöslicher extrahierbarer Nährstoffe
und Elemente (wie im Anhang B angegeben) in Bodenverbesserungsmitteln oder Kultursubstraten fest.
Das Verfahren gilt nicht für Calcium-/Magnesium-Bodenverbesserungsmittel und vorgeformte Materialien wie Platten
aus Mineralwolle und Schaumplatten.
ANMERKUNG Die Anforderungen der Norm können von den nationalen gesetzlichen Vorgaben bezüglich der Deklaration der erwähnten
Produkte abweichen.
Amendements du sol et supports de culture - Extraction des éléments nutritifs solubles dans l'eau
La présente Norme européenne décrit une méthode d'extraction pour une analyse de routine des éléments nutritifs et autres éléments extractibles solubles dans l'eau (énumérés dans l'annexe B) présents dans les amendements du sol ou des supports de culture.
Cette méthode ne s'applique pas aux amendements calciques ni aux matériaux préformés tels que la laine de roche et les mousses.
NOTE Les exigences de la norme peuvent différer des obligations légales en vigueur pour la déclaration des produits concernés.
Izboljševalci tal in rastni substrati - Ekstrakcija hranil in elementov, topnih v vodi
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Izboljševalci tal in rastni substrati - Ekstrakcija hranil in elementov, topnih v vodiBodenverbesserungsmittel und Kultursubstrate - Extraktion wasserlöslicher Nährstoffe und ElementeAmendements du sol et supports de culture - Extraction des éléments nutritifs solubles dans l'eauSoil improvers and growing media - Extraction of water soluble nutrients and elements65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 13652:2001SIST EN 13652:2002en01-november-2002SIST EN 13652:2002SLOVENSKI
STANDARD
SIST EN 13652:2002
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13652September 2001ICS 65.080English versionSoil improvers and growing media - Extraction of water solublenutrients and elementsAmendements du sol et supports de culture - Extractiondes éléments nutritifs solubles dans l'eauBodenverbesserungsmittel und Kultursubstrate - Extraktionwasserlöslicher Nährstoffe und ElementeThis European Standard was approved by CEN on 11 August 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13652:2001 ESIST EN 13652:2002
EN 13652:2001 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.44Principle.45Reagents.46Apparatus.57Test sample.58Procedure.59Determination of extracted nutrients and elements.610Expression of results.611Precision.612Test report.6Annex A (informative)
Results of an interlaboratory trial to determine water soluble nutrientsand elements.7Annex B (informative)
Methods of analysis used in the interlaboratory trial.14Bibliography.15SIST EN 13652:2002
EN 13652:2001 (E)3ForewordThis European Standard has been prepared by Technical Committee CEN/TC 223 "Soil improvers andgrowing media", the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by March 2002, and conflicting national standards shall be withdrawn atthe latest by March 2002.The annexes A and B are informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13652:2002
EN 13652:2001 (E)4SAFETY PRECAUTIONS —
Care should be taken when handling samples that may contain sharpsor is of a dusty nature.1 ScopeThis European Standard specifies a method for the routine extraction of water-soluble extractablenutrients and elements (as listed in annex B) in soil improvers or growing media.The method is not applicable to liming materials and preformed materials such as mineral wool slabs andfoam slabs.NOTEThe requirements of the standard may differ from the national legal requirements for the declaration of theproducts concerned.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text, and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this European Standard only when incorporated in it by amendment or revision. For undatedreferences the latest edition of the publication referred to applies (including amendments).EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987).EN 13039, Soil improvers and growing media – Determination of organic matter content and ash.EN 13040:1999, Soil improvers and growing media - Sample preparation for chemical and physical tests,determination of dry matter content, moisture content and laboratory compacted bulk density.3 Terms and definitionsFor the purposes of this standard the terms and definitions given in EN 13039 and EN 13040 apply.4 PrincipleA sample is extracted with water at 22 C
3 C in an extraction volume ratio of 1 + 5. The extractednutrients are determined by various methods as appropriate.5 Reagents5.1 GeneralAll reagents used shall be of recognised analytical quality and water of grade 2 according to EN ISO 3696.5.2Nitric acid, c(HNO3) = 15 mol/l;
1,42 g/ml; not less than 65 % mass/volume.5.3 Nitric acid, c(HNO3) = 0,5 mol/l, 35 ml nitric acid (5.2) dilute required volume of nitric acid (5.2) withwater.SIST EN 13652:2002
EN 13652:2001 (E)56 Apparatus6.1GeneralNOTEIt has been found convenient to keep separate sets of glassware for the determinations given in annex B, inorder to reduce the possibility of within-laboratory contamination.All glass apparatus and plastic vessels used in the procedure should be subject to an appropriatepreparation procedure in order to keep the risk of contamination to a minimum. It is recommended that allvessels (glass and plastic) are cleansed by carefully immersing in warm nitric acid (5.3) for a minimum of6 h and then rinsed in water.Borosilicate glassware shall not be used if boron is to be determined.Rubber stoppers, which may contain traces of metals shall not be used. It is recommended to use plasticor any other stopper free of all substances to be analyzed.The apparatus consists of the usual laboratory apparatus, and in particular the following:6.2Analytical balance with an accuracy of 10 mg.6.3Plastic bottles or containers, sufficiently large (500 ml to 1500 ml) with screw cap to accommodatethe volume of the sample, extractant and at least 10 % air volume.6.4Shaking or mixing machine, capable of holding the plastic bottles or containers (6.3) andmaintaining the sample in suspension without damaging the structure of the sample. The use of ahorizontal table shaker is recommended.6.5Filter paper, cellulose-based ashless types, with a medium pore size of approximately 8 m anddiameter of 150 mm.NOTECentrifugation is an acceptable alternative.7 Test samplePrepare the laboratory sample in accordance with EN 13040:1999, clause 8, and determine thelaboratory compacted bulk density in accordance with EN 13040:1999, annex A.8 Procedure8.1Extraction8.1.1 Test samples passing through a 20 mm sieveTake a weight equivalent to 60 ml of the sample (EN 13040:1999, clause 8.5) volume to the nearest 1 gand transfer to the container (6.3). Add 300 ml of water, secure the cap and shake for 1 h on the shakingmachine (6.4) at 22 C
3 C.8.1.2 Test samples passing through a 40 mm sieveTake a weight equivalent to 250 ml of the sample (EN 13040: 1999, clause 8.3) volume to the nearest 1 gand transfer to the container (6.3). Add 1250 ml of water, secure the cap and shake for 1 h on theshaking machine (6.4) at 22 C
3 C.SIST EN 13652:2002
EN 13652:2001 (E)68.1.3 FiltrationFilter through filter paper (6.5) discarding at least the first 10 ml. In some cases paper filtration is too slowor even impossible. In such cases alternative procedures for obtaining a clear supernatant are acceptableand the technique used shall be reported.The filtered extract is stable for three days in a hermetically closed polyethylene bottle if stored in arefrigerator at 0 C to 5 C. The filtrate can be stored for longer periods in a deep freezer at about - 18 C.Before using a solution that has been frozen, the thawed solution shall be thoroughly mixed to eliminategradient separation that occurs on freezing and subsequent thawing.8.2BlankThe reagent blank test shall be carried out in parallel with the determination, by the same procedure asoutlined in 8.1.1 or 8.1.2 and 8.1.3, using the same quantities of all the reagents as in the determinationbut omitting the test portion.NOTEThe measurement of a blank is introduced to determine the contribution of the extracting solution,glassware and filter paper used.9 Determination of extracted nutrients and elements.See annex B.10 Expression of resultsSubtract the values determined for reagent blank from those obtained for the samples. All results shall becalculated using the determined compacted laboratory bulk density and expressed in mg/l substrate asreceived basis.11 PrecisionThe repeatability and reproducibility of the water soluble nutrient or element content in separatelyprepared samples should be in accordance with Tables A.1 to A.6.A summary of the results of an interlaboratory trial to determine the precision of the method, inaccordance with ISO 5725 [2], is given in annex A.NOTEThe values derived from this interlaboratory trial may not be applicable to concentrations and matricesother than those tes
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