BS EN 15559-2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd《肥料 依照Arnd法测定硝态氮和氨态氮含量的测定》.pdf
《BS EN 15559-2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd《肥料 依照Arnd法测定硝态氮和氨态氮含量的测定》.pdf》由会员分享,可在线阅读,更多相关《BS EN 15559-2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd《肥料 依照Arnd法测定硝态氮和氨态氮含量的测定》.pdf(18页珍藏版)》请在麦多课文档分享上搜索。
1、BS EN 15559:2009ICS 65.080NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFertilizers Determination ofnitric and ammoniacalnitrogen according toArndThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 30 June 2009
2、 BSI 2009ISBN 978 0 580 62387 5Amendments/corrigenda issued since publicationDate CommentsBS EN 15559:2009National forewordThis British Standard is the UK implementation of EN 15559:2009. Itsupersedes DD CEN/TS 15559:2007 which is withdrawn.The UK participation in its preparation was entrusted to Te
3、chnicalCommittee CII/37, Fertilisers and related chemicals.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compli
4、ance with a British Standard cannot confer immunityfrom legal obligations.BS EN 15559:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15559January 2009ICS 65.080 Supersedes CEN/TS 15559:2007 English VersionFertilizers - Determination of nitric and ammoniacal nitrogenaccording to ArndEngrais -
5、Dosage de lazote nitrique et ammoniacal selonArndDngemittel - Bestimmung von Nitrat- undAmmoniumstickstoff nach ArndThis European Standard was approved by CEN on 6 December 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this E
6、uropeanStandard 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 CEN Management Centre or to any CEN member.This European Standard exists in three official versions (Engli
7、sh, 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cy
8、prus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMI
9、T EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15559:2009: EBS EN 15559:2009EN 15559:2009 (E) 2 Contents Page Forewo
10、rd 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle 4 5 Reagents .4 6 Apparatus .6 7 Sampling and sample preparation 11 8 Procedure 11 9 Calculation and expression of the result . 14 10 Test report . 14 Bibliography . 15 BS EN 15559:2009EN 15559:2009 (E) 3 Foreword This do
11、cument (EN 15559:2009) 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 publication of an identical text or by endorsement, at the latest
12、 by July 2009, and conflicting national standards shall be withdrawn at the latest by July 2009. 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 pate
13、nt rights. This document supersedes CEN/TS 15559:2007. 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, the national standards organizations of the following countries a
14、re bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Swe
15、den, Switzerland and the United Kingdom. BS EN 15559:2009EN 15559:2009 (E) 4 1 Scope This European Standard specifies a method for the determination of nitric and ammoniacal nitrogen with reduction according to Arnd (modified for each of the variants a, b and c). The method is applicable to all nitr
16、ogenous fertilizers, including compound fertilizers, in which nitrogen is found exclusively in nitrate form, or in ammoniacal and nitrate form. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cit
17、ed applies. For undated references, the latest edition of the referenced document (including any 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
18、 Part 1: General terms EN 12944-2:1999, Fertilizers and liming materials and soil improvers Vocabulary Part 2: Terms relating to fertilizers EN ISO 3696:1995, Water for analytical laboratory use Specification and test methods (ISO 3696:1987) 3 Terms and definitions For the purposes of this document,
19、 the terms and definitions given in EN 12944-1:1999 and EN 12944-2:1999 apply. 4 Principle Reduction of nitrates and nitrites to ammonia in a neutral aqueous solution by means of a metallic alloy composed of 60 % Cu and 40 % Mg (Arnds alloy) in the presence of magnesium chloride. Distillation of the
20、 ammonia and determination of the yield in a known volume of standard sulfuric acid solution. Titration of the excess acid by means of a standard solution of sodium or potassium hydroxide. 5 Reagents 5.1 General Use only reagents of recognized analytical grade and distilled or demineralized water, f
21、ree from carbon dioxide and all nitrogenous compounds (grade 3 according to EN ISO 3696:1995). 5.2 Diluted hydrochloric acid Mix one volume of concentrated hydrochloric acid solution, (HCl) = 1,18 g/ml, with one volume of water. BS EN 15559:2009EN 15559:2009 (E) 5 5.3 Sulfuric acid (for variant a),
22、c = 0,05 mol/l. 5.4 Sodium or potassium hydroxide solution (for variant a), carbonate free, c = 0,1 mol/l. 5.5 Sulfuric acid (for variant b, see NOTES in 8.2), c = 0,1 mol/l. 5.6 Sodium or potassium hydroxide solution (for variant b, see NOTES in 8.2), carbonate free, c = 0,2 mol/l. 5.7 Sulfuric aci
23、d (for variant c, see NOTES in 8.2), c = 0,25 mol/l. 5.8 Sodium or potassium hydroxide solution (for variant c, see NOTES in 8.2), carbonate free, c = 0,5 mol/l. 5.9 Sodium hydroxide solution, approximately c = 2 mol/l. 5.10 Arnds alloy, powdered so as to pass through a sieve with apertures less tha
24、n 1 mm square. 5.11 Magnesium chloride solution, = 20 %. Dissolve 200 g of magnesium chloride (MgCl2.6H2O) in approximately 600 ml to 700 ml of water in a 1 l flat-bottomed flask. To prevent frothing, add 15 g of magnesium sulfate (MgSO4.7H2O). After dissolution add 2 g of magnesium oxide and a few
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
本资源只提供5页预览,全部文档请下载后查看!喜欢就下载吧,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BSEN155592009FERTILIZERSDETERMINATIONOFNITRICANDAMMONIACALNITROGENACCORDINGTOARND 肥料 依照 ARND 测定 硝态氮 氨态氮

链接地址:http://www.mydoc123.com/p-573277.html