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1、BRITISH STANDARD BS EN 13652:2001 Soil improvers and growing media Extraction of water soluble nutrients and elements The European Standard EN 13652:2001 has the status of a British Standard ICS 65.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun
2、sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13652:2001 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and S
3、trategy Committee on 09 November 2001 BSI 09 November 2001 ISBN 0 580 38267 2 National foreword This British Standard is the official English language version of EN 13652:2001. The UK participation in its preparation was entrusted to Technical Committee AW/20, Top soil and other growing media, which
4、 has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under
5、the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct appl
6、ication. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related
7、 international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Ame
8、ndments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13652 September 2001 ICS 65.080 English version Soil improvers and growing media - Ex
9、traction of water soluble nutrients and elements Amendements du sol et supports de culture - Extraction des lments nutritifs solubles dans leau Bodenverbesserungsmittel und Kultursubstrate - Extraktion wasserlslicher Nhrstoffe und Elemente This European Standard was approved by CEN on 11 August 2001
10、. 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
11、 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 translation under the responsibility of a CEN member into its own language and notified to the Management Centre has
12、 the same status as the official versions. 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 COMMITT
13、EE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13652:2001 E Licensed Copy: sheffieldun
14、 sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13652:2001 (E) 2 Contents page Foreword .3 1Scope4 2Normative references4 3Terms and definitions.4 4Principle .4 5Reagents 4 6Apparatus.5 7Test sample5 8Procedure.5 9Determination of extracted nutrients and elements6
15、 10Expression of results6 11Precision 6 12Test report6 Annex A (informative) Results of an interlaboratory trial to determine water soluble nutrients and elements7 Annex B (informative) Methods of analysis used in the interlaboratory trial.14 Bibliography15 Licensed Copy: sheffieldun sheffieldun, na
16、, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13652:2001 (E) 3 Foreword This European Standard has been prepared by Technical Committee CEN/TC 223 “Soil improvers and growing media“, the secretariat of which is held by BSI. This European Standard shall be given the status of a
17、national standard, either by publication of an identical text or by endorsement, at the latest by March 2002, and conflicting national standards shall be withdrawn at the latest by March 2002. The annexes A and B are informative. According to the CEN/CENELEC Internal Regulations, the national standa
18、rds organizations of the following countries 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. Licensed Cop
19、y: sheffieldun sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13652:2001 (E) 4 SAFETY PRECAUTIONS Care should be taken when handling samples that may contain sharps or is of a dusty nature. 1 Scope This European Standard specifies a method for the routine extracti
20、on 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. NOTEThe requirements of the standard may differ from the national lega
21、l requirements for the declaration of the products concerned. 2 Normative references This 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 listed here
22、after. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN ISO 3696,
23、 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 dr
24、y matter content, moisture content and laboratory compacted bulk density. 3 Terms and definitions For the purposes of this standard the terms and definitions given in EN 13039 and EN 13040 apply. 4 Principle A sample is extracted with water at 22 ?C ? 3 ?C in an extraction volume ratio of 1 + 5. The
25、 extracted nutrients are determined by various methods as appropriate. 5 Reagents 5.1 General All reagents used shall be of recognised analytical quality and water of grade 2 according to EN ISO 3696. 5.2 Nitric acid, c(HNO3) = 15 mol/l; ? ? 1,42 g/ml; not less than 65 % mass/volume. 5.3 Nitric acid
26、, c(HNO3) = 0,5 mol/l, 35 ml nitric acid (5.2) dilute required volume of nitric acid (5.2) with water. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13652:2001 (E) 5 6 Apparatus 6.1 General NOTEIt has been found convenient to keep separ
27、ate sets of glassware for the determinations given in annex B, in order to reduce the possibility of within-laboratory contamination. All glass apparatus and plastic vessels used in the procedure should be subject to an appropriate preparation procedure in order to keep the risk of contamination to
28、a minimum. It is recommended that all vessels (glass and plastic) are cleansed by carefully immersing in warm nitric acid (5.3) for a minimum of 6 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 sh
29、all not be used. It is recommended to use plastic or any other stopper free of all substances to be analyzed. The apparatus consists of the usual laboratory apparatus, and in particular the following: 6.2 Analytical balance with an accuracy of 10 mg. 6.3 Plastic bottles or containers, sufficiently l
30、arge (500 ml to 1500 ml) with screw cap to accommodate the volume of the sample, extractant and at least 10 % air volume. 6.4 Shaking or mixing machine, capable of holding the plastic bottles or containers (6.3) and maintaining the sample in suspension without damaging the structure of the sample. T
31、he use of a horizontal table shaker is recommended. 6.5 Filter paper, cellulose-based ashless types, with a medium pore size of approximately 8 ?m and diameter of 150 mm. NOTECentrifugation is an acceptable alternative. 7 Test sample Prepare the laboratory sample in accordance with EN 13040:1999, cl
32、ause 8, and determine the laboratory compacted bulk density in accordance with EN 13040:1999, annex A. 8 Procedure 8.1 Extraction 8.1.1 Test samples passing through a 20 mm sieve Take a weight equivalent to 60 ml of the sample (EN 13040:1999, clause 8.5) volume to the nearest 1 g and transfer to the
33、 container (6.3). Add 300 ml of water, secure the cap and shake for 1 h on the shaking machine (6.4) at 22 ?C ? 3 ?C. 8.1.2 Test samples passing through a 40 mm sieve Take a weight equivalent to 250 ml of the sample (EN 13040: 1999, clause 8.3) volume to the nearest 1 g and transfer to the container
34、 (6.3). Add 1250 ml of water, secure the cap and shake for 1 h on the shaking machine (6.4) at 22 ?C ? 3 ?C. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13652:2001 (E) 6 8.1.3 Filtration Filter through filter paper (6.5) discarding at
35、 least the first 10 ml. In some cases paper filtration is too slow or even impossible. In such cases alternative procedures for obtaining a clear supernatant are acceptable and the technique used shall be reported. The filtered extract is stable for three days in a hermetically closed polyethylene b
36、ottle if stored in a refrigerator 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 eliminate gradient separation that occurs on freezing and subsequent tha
37、wing. 8.2 Blank The reagent blank test shall be carried out in parallel with the determination, by the same procedure as outlined in 8.1.1 or 8.1.2 and 8.1.3, using the same quantities of all the reagents as in the determination but omitting the test portion. NOTEThe measurement of a blank is introd
38、uced 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 results Subtract the values determined for reagent blank from those obtained for the samples. All results shall be calcul
39、ated using the determined compacted laboratory bulk density and expressed in mg/l substrate as received basis. 11 Precision The repeatability and reproducibility of the water soluble nutrient or element content in separately prepared samples should be in accordance with Tables A.1 to A.6. A summary
40、of the results of an interlaboratory trial to determine the precision of the method, in accordance with ISO 5725 2, is given in annex A. NOTEThe values derived from this interlaboratory trial may not be applicable to concentrations and matrices other than those tested. 12 Test report The test report
41、 shall contain the following information: a) a reference to this European Standard; b) all information necessary for complete identification of the sample; c) all the analytical methods used; d) the results of the determination, expressed as mg/l fresh sample; e) details of any operations not specif
42、ied in the European Standard or regarded as optional, as well as any factor, which may have affected the results; f) the compacted laboratory bulk density result. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13652:2001 (E) 7 Annex A (i
43、nformative) Results of an interlaboratory trial to determine water soluble nutrients and elements An interlaboratory trial was organised in 1997 under the auspices of the European Committee for Standardization, to test the procedures specified in this European Standard. In this trial the number of l
44、aboratories given in the Tables A.1 to A.6 determined the water soluble nutrient content in six sample types. All results are reported on a fresh basis. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13652:2001 (E) 8 A summary of the res
45、ults of the interlaboratory trial for the determination of water soluble nutrients and elements in six sample types is given in Tables A.1 to A.6. Table A.1 - Composted bark ElementNo. of labs after No. of outliers mean value Repeatability RepeatabilityRepeatability limit ReproducibilityReproducibil
46、ityReproducibility limit eliminating outliers (labs)mg/lsrStd Dev %r = 2,8 srsRStd Dev %R = 2,8 sR NH4-N220764,723,218,5065,00260,9495,55730,63 NO3-N18225,11,5016,684,1945,54507,93127,50 P183236,26,537,7418,2867,7380,28189,65 K2301910,044,166,47123,65300,4844,05841,36 Ca20259,04,2420,1111,8719,7593,
47、7555,31 Mg21123,81,0312,172,893,8645,4610,82 SO4-S130109,47,0117,9419,6253,73137,57150,43 Na191275,19,329,4926,1122,3522,7562,59 B1311,40,1020,400,280,2653,100,72 Cu1901,30,0715,860,200,49108,661,37 Fe20010,40,6116,351,693,87104,6210,84 Mn2001,30,1021,290,270,4496,171,22 Mo810,20,0223,580,050,0233,8
48、30,07 Zn2002,60,1819,140,490,5458,061,50 Cl160898,335,7711,15100,15131,7641,07368,93 F711,00,36102,931,010,91258,072,54 ElementNo. of labs after No. of outliers mean value Repeatability RepeatabilityRepeatability limit ReproducibilityReproducibilityReproducibility limit eliminating outliers (labs)g/
49、lsrStd Dev %r = 2,8 srsRStd Dev %R = 2,8 sR CLBDa141392,88,35,923,322,115,861,9 a CLBD - Compacted laboratory bulk density Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 01:39:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13652:2001 (E) 9 Table A.2 - Biowaste ElementNo. of labs after No. of outliers mean value Repeatability RepeatabilityRepeatability limit ReproducibilityReproducibilityReproducibility limit eliminating outliers (labs)mg/lsrStd Dev %r = 2,8 srsRStd Dev %R = 2,8 sR NH4-N201115,42,455,946,8560,70147,25169,97 NO3-N20076,710,2137,2628,58108,5
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