DIN EN 15919-2011 Fertilizers - Extraction of phosphorus soluble in 2 % formic acid German version EN 15919 2011《肥料 溶于2%甲酸的磷的萃取 德文版本EN 15919-2011》.pdf

《DIN EN 15919-2011 Fertilizers - Extraction of phosphorus soluble in 2 % formic acid German version EN 15919 2011《肥料 溶于2%甲酸的磷的萃取 德文版本EN 15919-2011》.pdf》由会员分享，可在线阅读，更多相关《DIN EN 15919-2011 Fertilizers - Extraction of phosphorus soluble in 2 % formic acid German version EN 15919 2011《肥料 溶于2%甲酸的磷的萃取 德文版本EN 15919-2011》.pdf（8页珍藏版）》请在麦多课文档分享上搜索。

1、August 2011 Translation by DIN-Sprachendienst.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、65.080!$t2j“1811571www.din.deDDIN EN 15919Fertilizers Extraction of phosphorus soluble in 2 % formic acidEnglish translation of DIN EN 15919:2011-08Dngemittel Extraktion des in 2%iger Ameisensure lslichen PhosphorsEnglische bersetzung von DIN EN 15919:2011-08Engrais Extraction du phosphore soluble d

3、ans lacide formique 2 %Traduction anglaise de DIN EN 15919:2011-08SupersedesDIN SPEC 1092(DIN CEN/TS 15919):2010-02www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.808.11 DIN EN 15919:2011-08 A comma is used as the decimal marker. N

4、ational foreword This standard has been prepared by Technical Committee CEN/TC 260 “Fertilizers and liming materials” (Secretariat: DIN, Germany) under the mandate M/335. The responsible German body involved in its preparation was the Normenausschuss Lebensmittel und landwirtschaftliche Produkte (Fo

5、od and Agricultural Products Standards Committee), Working Committee NA 057-03-02 AA Dngemittel. The method specified in this standard is based upon Regulation (EC) No 2003/2003 relating to fertilizers, Annex IV, method 3.1.2 (see Bibliography). DIN EN 15919 supersedes DIN SPEC 1092 (DIN CEN/TS 1591

6、9):2010-02, which has been adopted as a European Standard based on the results of the unique acceptance procedure. Amendments This standard differs from DIN SPEC 1092 (DIN CEN/TS 15919):2010-02 as follows: a) in Subclause 8.2, a normative reference to CEN/TS 15959 has been included relating to the d

7、etermination of phosphorus; b) normative references have been updated; c) the Bibliography has been updated; d) the standard has been editorially revised. Previous editions DIN SPEC 1092 (DIN CEN/TS 15919): 2010-02 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15919 June 2011 ICS 65.080 Sup

8、ersedes CEN/TS 15919:2009English Version Fertilizers - Extraction of phosphorus soluble in 2 % formic acid Engrais - Extraction du phosphore soluble dans lacide formique 2 % Dngemittel - Extraktion des in 2%iger Ameisensure lslichen Phosphors This European Standard was approved by CEN on 29 April 20

9、11. 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

10、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-CEN

11、ELEC 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, Luxembourg, Malt

12、a, 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 rights of explo

13、itation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15919:2011: EEN 15919:2011 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Sampling .4 5 Principle 4 6 Reagents .4 7 Apparatus .4 8 Procedure .5 Bibliography 6

14、 DIN EN 15919:2011-08 EN 15919:2011 (E) 3 Foreword This document (EN 15919:2011) has been prepared by Technical Committee CEN/TC 260 “Fertilizers and liming materials”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publica

15、tion of an identical text or by endorsement, at the latest by December 2011, and conflicting national standards shall be withdrawn at the latest by December 2011. 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

16、shall not be held responsible for identifying any or all such patent rights. This document supersedes CEN/TS 15919:2009. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations,

17、 the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net

18、herlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 15919:2011-08 EN 15919:2011 (E) 4 1 Scope This document specifies the procedure for the determination of phosphorus soluble in 2 % formic acid (20 g per litre). The method is ap

19、plicable to soft natural phosphates exclusively. 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 (including an

20、y amendments) applies. EN 1482-2, Fertilizers and liming materials Sampling and sample preparation Part 2: Sample preparation EN 12944-1:1999, Fertilizers and liming materials and soil improvers Vocabulary Part 1: General terms EN 12944-2:1999, Fertilizers and liming materials and soil improvers Voc

21、abulary Part 2: Terms relating to fertilizers CEN/TS 15959, Fertilizers Determination of extracted phosphorus 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12944-1:1999 and EN 12944-2:1999 apply. 4 Sampling Sampling is not part of the method specifi

22、ed in this document. A recommended sampling method is given in EN 1482-1. Sample preparation shall be carried out in accordance with EN 1482-2. Grinding is recommended for homogeneity reasons. 5 Principle To differentiate between hard natural phosphates and soft natural phosphates, phosphorus solubl

23、e in formic acid is extracted from the test portion with a 2 % formic acid solution under specified conditions. 6 Reagents 6.1 Water, distilled or demineralised. 6.2 Formic acid, 2 % ( = 20 g/l). Make 82 ml of formic acid (concentration 98 % to 100 %; d20= 1,22 g/ml) up to 5 l with distilled water.

24、7 Apparatus 7.1 Common laboratory equipment and glassware. DIN EN 15919:2011-08 EN 15919:2011 (E) 5 7.2 500 ml graduated flask, with a wide neck (e.g. Stohmann). 7.3 Rotary shaker, 35 turns to 40 turns per min. 7.4 Dry pleated filter, free from phosphates. 8 Procedure 8.1 Test portion Weigh, to the

25、nearest 0,001 g, 5 g of the laboratory sample and place it in a dry 500 ml graduated flask (7.2). 8.2 Extraction While continuously rotating the flask by hand, add formic acid (6.2) to the test portion at (20 1) C until it is approximately 1 cm below the graduation mark and make up to the volume wit

26、h formic acid (6.2). Close the flask with a rubber stopper and shake for 30 min at (20 2) C on a rotary shaker (7.3). Filter the solution through a dry pleated filter (7.4) into a dry glass receptacle. Discard the first portion of the filtrate. Continue the filtering until a sufficient quantity of f

27、iltrate is obtained to carry out the phosphorus determination according to CEN/TS 15959. DIN EN 15919:2011-08 EN 15919:2011 (E) 6 Bibliography 1 EN 1482-1, Fertilizers and liming materials Sampling and sample preparation Part 1: Sampling 2 Regulation (EC) No 2003/2003 of the European Parliament and of the Council of 13 October 2003 relating to fertilisers, Official Journal L 304, 21/11/2003, P. 0001-0194, Annex IV, method 3.1.2 DIN EN 15919:2011-08