BS EN 13039-2011 Soil improvers and growing media Determination of organic matter content and ash《土壤改良剂和培养基 有机物质含量和灰分测定》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13039:2011Soil improvers and growingmedia Determination oforganic matter content and ashBS EN 13039:2011 BRITISH STANDARDNational forewordThis British Standard is the UK im

2、plementation of EN 13039:2011. Itsupersedes BS EN 13039:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AW/20, Top soil and other growing media.A list of organizations represented on this committee can beobtained on request to its secretary.This pu

3、blication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 68881 2ICS 65.080Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the aut

4、hority of theStandards Policy and Strategy Committee on 30 November 2011.Amendments issued since publicationDate Text affectedBS EN 13039:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13039 November 2011 ICS 65.080 Supersedes EN 13039:1999English Version Soil improvers and growing media -

5、 Determination of organic matter content and ash Amendements du sol et supports de culture - Dtermination de la matire organique et des cendres Bodenverbesserungsmittel und Kultursubstrate - Bestimmung des Gehaltes an organischer Substanz und Asche This European Standard was approved by CEN on 17 Se

6、ptember 2011. 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

7、 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 t

8、he 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb

9、ourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All right

10、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13039:2011: EBS EN 13039:2011EN 13039:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Apparatus .46 Procedure .56.1 Test sample 56.2 Pr

11、eparation of the basin 56.3 Determination .57 Calculation and expression of results .58 Precision .69 Test report 6Annex A (informative) Results of an interlaboratory trial to determine the organic matter 7BS EN 13039:2011EN 13039:2011 (E) 3 Foreword This document (EN 13039:2011) has been prepared b

12、y Technical Committee CEN/TC 223 “Soil improvers and growing media”, the secretariat of which is held by ASI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2012, and conflicting national sta

13、ndards shall be withdrawn at the latest by May 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13039

14、:1999. The main change to the previous edition is in the scope. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Esto

15、nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 13039:2011EN 13039:2011 (E) 4 1 Scope This European Standard spe

16、cifies a routine method for determining the organic matter and the ash content of soil improvers and growing media. This method is not applicable to liming materials and preformed materials such as mineral wool slabs and foam slabs. The requirements of the standard may differ from the national legal

17、 requirements for the declaration of the products concerned. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (

18、including any amendments) applies. EN 12579:1999, Soil improvers and growing media Sampling EN 13040:2007, Soil improvers and growing media Sample preparation for chemical and physical tests, determination of dry matter content, moisture content and laboratory compacted bulk density ISO 5725 (all pa

19、rts), Accuracy (truenesss and precision) of measurement methods and results 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12579:1999 and the following apply. 3.1 organic matter carbon fraction of a sample which is free from water and inorganic subst

20、ances The organic matter for the purposes of this standard is taken as equal to loss on dry incineration at (450 25) C. 3.2 ash residual mineral matter remaining after the destruction of organic matter/material by controlled burning 4 Principle The test portion is dried at (103 2) C, then ashed at (

21、450 25) C. The ash is determined as the residue on ignition. The organic matter is taken to be the loss of mass on ignition. Both are expressed as a percentage by mass of the dried sample. 5 Apparatus 5.1 Drying oven, capable of maintaining a temperature of (103 2) C. 5.2 Electric muffle furnace, ca

22、pable of maintaining temperatures of (450 25) C and (550 25) C. BS EN 13039:2011EN 13039:2011 (E) 5 5.3 Basin, made from fused silica or quartz, of shallow form with a flat bottom, capable of holding a sample of 5 g. Typical dimensions are 70 mm width and 20 mm height. 5.4 Desiccator containing an a

23、ctive drying agent. 5.5 Analytical balance with a scale interval 0,001 g. 6 Procedure 6.1 Test sample Prepare the test sample in accordance with Clause 9 of EN 13040:2007. 6.2 Preparation of the basin Heat the basin (see 5.3) for 16 h in the muffle furnace (see 5.2) at (550 25) C. Cool in the desicc

24、ator (see 5.4). After cooling, weigh to the nearest 0,001 g. Note the mass of the basin m0. NOTE The basin is heated to (550 25) C to ensure that all volatile material is removed prior to the test. 6.3 Determination Spread evenly over the surface of the basin (see 5.3) approximately 5 g of the test

25、sample (see 6.1) and dry in the oven (see 5.1) at a temperature of (103 2) C for 4 h. Allow the basin and contents to cool to room temperature in the desiccator (see 5.4) and weigh to the nearest 0,001 g. Place the basin and contents in the oven (see 5.1) maintained at (103 2) C for a further 1 h. A

26、llow the basin and contents to cool to room temperature in the desiccator (see 5.4) and weigh to the nearest 0,001 g. Repeat the operations of heating, cooling and weighing until the difference between two successive weightings is less than 0,01 g. Note the mass of the basin and dried sample m1. Pla

27、ce the basin and contents in the cool muffle furnace (see 5.2) and raise the temperature over approximately 1 h to (450 25) C. Maintain this temperature for 6 h. Allow the basin and contents to cool to room temperature in the desiccator (see 5.4) and weigh to the nearest 0,001 g. Place the basin and

28、 contents into the muffle furnace (see 5.2) maintained at (450 25) C for a further 1 h. Allow the basin and contents to cool to room temperature in the desiccator (see 5.4) and weigh to the nearest 0,001 g. Repeat the operations of heating, cooling and weighing until the difference between two succe

29、ssive weightings is less than 0,01 g. Note the mass of the basin and sample after ignition m2. 7 Calculation and expression of results The organic matter content, expressed as a percentage by mass of the dried sample, is given by the following equation: 1000121om=mmmmW (1) The ash content, expressed

30、 as a percentage by mass of the dried sample, is given by the following equation: BS EN 13039:2011EN 13039:2011 (E) 6 1000102ash=mmmmW (2) where Wom is the organic matter content, in % m/m; Washis the ash content, in % m/m;m0is the mass of the basin, in g; m1is the mass of the basin and the sample a

31、fter drying in grams; m2is the mass of the basin and the sample after ignition in grams. 8 Precision The repeatability and reproducibility of the organic matter (ash) of the sample measured in 2 separately prepared samples should be in accordance with Table A.1. A summary of the results of an interl

32、aboratory trial to determine the precision of the method in accordance with ISO 5725 is given in Annex A. The values derived from the interlaboratory trial may not be applicable to concentrations and matrices other than those given. 9 Test report The test report shall include the following: a) a com

33、plete identification of the sample; b) a reference to this European Standard; c) the results expressed in accordance with Clause 7; d) any unusual features noticed during the determination; e) details of any operation not specified in the European Standard or regarded as optional, as well as any fac

34、tor which may have affected the results. BS EN 13039:2011EN 13039:2011 (E) 7 Annex A (informative) Results of an interlaboratory trial to determine the organic matter An interlaboratory trial was organized in 1995 under the auspices of the European Committee for Standardization, to test the procedur

35、es specified in this European Standard. In this trial the number of laboratories given in Table A.1 determined the organic matter in three types of samples. Table A.1 Summary of the results of the interlaboratory trial for the determination of organic matter Sample Unfertilized peat perlite Composte

36、d coarse bark Sewage sludge composted with straw Number of laboratories retained after eliminating outliers 19 18 19 Number of outliers (laboratories) 0 1 0 Mean Value (m/m %) 79,86 76,03 44,34 Repeatability standard deviation, sr(% m/m) 1,00 1,29 1,20 Repeatability relative standard deviation (% m/

37、m) 1,25 1,70 2,71 Repeatability limit, r = 2,8 sr(% m/m) 2,8 3,60 3,37 Reproducibility standard deviation, sR(% m/m) 1,51 2,33 2,26 Reproducibility relative standard deviation (%) 1,89 3,06 5,10 Reproducibility limit, R = 2,8 sR(% m/m) 4,23 6,51 6,33 This page deliberately left blankThis page delibe

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