BS EN 1014-2-2010 Wood preservatives - Creosote and creosoted timber - Methods of sampling and analysis - Procedure for obtaining a sample of creosote from creosoted timber for sub.pdf

1、BS EN1014-2:2010ICS 71.100.50NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDWood preservatives Creosote and creosotedtimber Methods ofsampling and analysisPart 2: Procedure for obtaining asample of creosote from creosotedtimber for subsequent analysisThis Briti

2、sh Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 July 2010 BSI 2010ISBN 978 0 580 64045 2Amendments/corrigenda issued since publicationDate CommentsBS EN 1014-2:2010National forewordThis British Standard is the UK implementation of EN 1014-2:2010. Itsupe

3、rsedes BS EN 1014-2:1996 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/515, Wood preservation.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the neces

4、sary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 1014-2:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1014-2 June 2010 ICS 71.100.50 Supersedes EN 1014-2:1995English Versio

5、n Wood preservatives - Creosote and creosoted timber - Methods of sampling and analysis - Part 2: Procedure for obtaining a sample of creosote from creosoted timber for subsequent analysis Produits de prservation du bois - Crosote et bois crosot - Mthodes dchantillonnage et danalyse - Partie 2: Proc

6、dure pour obtenir un chantillon de crosote du bois crosot soumettre une analyse ultrieure Holzschutzmittel - Kreosot (Teerimprgnierl) und damit imprgniertes Holz - Probenahme und Analyse - Teil 2: Verfahren zur Probenahme von Kreosot aus imprgniertem Holz fr die nachfolgende Analyse This European St

7、andard was approved by CEN on 12 May 2010. 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 s

8、uch national standards may be obtained on application to the CEN 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 langu

9、age and notified to the CEN 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, Lith

10、uania, Luxembourg, 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 2010

11、CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1014-2:2010: EBS EN 1014-2:2010EN 1014-2:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Sampling .44.1 General 44.2 Sampling procedure

12、 44.3 Amount of sample45 Reagent .56 Apparatus .57 Procedure for the extraction of creosote from the sample of the creosoted timber 78 Sampling report .7Bibliography 8BS EN 1014-2:2010EN 1014-2:2010 (E) 3 Foreword This document (EN 1014-2:2010) has been prepared by Technical Committee CEN/TC 38 “Dur

13、ability of wood and wood-based products”, the secretariat of which is held by AFNOR. 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 December 2010, and conflicting national standards shall be with

14、drawn at the latest by December 2010. 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 1014-2:1995. This st

15、andard forms part of a series of standards relating to the sampling and analysis of creosote and creosoted timber. The other standards of the series are: EN 1014-1, Wood preservatives Creosote and creosoted timber Methods of sampling and analysis Part 1: Procedure for sampling creosote EN 1014-3, Wo

16、od preservatives Creosote and creosoted timber Methods of sampling and analysis Part 3: Determination of the benzo(a)pyrene content of creosote EN 1014-4, Wood preservatives Creosote and creosoted timber Methods of sampling and analysis Part 4: Determination of the water-extractable phenols content

17、of creosote 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, Estonia, Finland, France, Germany, Greece, Hungary, Icel

18、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1014-2:2010EN 1014-2:2010 (E) 4 1 Scope This European Standard specifies a procedure for obtaining a sample of creos

19、ote from creosoted timber for subsequent analysis. 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

20、any amendments) applies. EN 351-2, Durability of wood and wood-based products Preservative-treated solid wood Part 2: Guidance on sampling for the analysis of preservative-treated wood 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 batch cle

21、arly identifiable collection of units of preservative-treated wood manufactured to conform to the same defined penetration and retention requirements EN 1001-2:2005, 4.04 4 Sampling 4.1 General The objective of the sampling is to obtain a representative sample of the creosoted timber from which the

22、creosote may be extracted for further analysis. Samples for analysis shall therefore be taken from a batch of creosoted timber. If it is not possible to identify the batch, then all samples for analysis shall be taken from one piece of creosoted timber. NOTE It is recommended that the analysis is ca

23、rried out as soon as possible after the sampling. 4.2 Sampling procedure From the creosoted timber under examination, remove sufficient timber from the impregnated zones to yield the amount of creosote necessary for subsequent analysis. This shall be done by using any one of the procedures described

24、 in EN 351-2. NOTE Sampling by using borings should be preferred. If this procedure is used, the borings should be cut to include the impregnated zone only. 4.3 Amount of sample The total amount of impregnated wood sample removed from each batch shall be sufficient to yield the amount of creosote ne

25、cessary for subsequent chemical analysis. The sample shall be converted to particles of a size suitable for Soxhlet extraction. If storage is necessary the sample shall be transferred to a glass phial with screw top (6.8) stored at a temperature not more than 10 C. BS EN 1014-2:2010EN 1014-2:2010 (E

26、) 5 NOTE Treated timber should normally contain 10 % by mass of creosote. Therefore to obtain 2 g of creosote, about 20 g is needed. 5 Reagent Toluene (C6H5CH3), analytical grade with an evaporation residue of less than 0,001 % (m/m). 6 Apparatus Ordinary laboratory equipment, including distillation

27、 apparatus and the following (see Figure 1): 6.1 Round-bottom flask, capacity 250 ml. 6.2 Heating mantle 250 ml, (200 to 300) W. 6.3 Soxhlet-extractor, capacity 100 ml. 6.4 Extraction thimble (33 mm inner diameter, 36 mm outer diameter and 94 mm height). 6.5 Dean and Stark receiver with a capacity o

28、f 10 ml. 6.6 Reflux condenser. 6.7 Wire gauze made of stainless steel, which is needed to keep the wood pieces in the extraction thimble. 6.8 Glass phial with screw top. BS EN 1014-2:2010EN 1014-2:2010 (E) 6 Key 1 Round bottom flask 2 Soxhlet-apparatus and extraction thimble 3 Adaptor that fits betw

29、een the Soxhlet and the water trap 4 Dean and Stark receiver (water trap) 5 Reflux condenser Figure 1 Extraction apparatus BS EN 1014-2:2010EN 1014-2:2010 (E) 7 7 Procedure for the extraction of creosote from the sample of the creosoted timber Place about 200 ml of toluene (5) in the 250 ml round-bo

30、ttom flask (6.1). Place the sample in the extraction thimble (6.4) and cover with the wire gauze (6.7). If the extraction thimble is too small to contain all of the sample, more than one extraction shall be performed. Transfer the extraction thimble to the Soxhlet extractor (6.3), assemble the extra

31、ction apparatus (see Figure 1) with the round-bottom flask seated in the heating mantle (6.2). Heat the round-bottom flask so that the toluene refluxes at a rate of at least one drop per second from the tip of the condenser (6.6). If necessary, drain and discard the water from the Dean and Stark rec

32、eiver (6.5). NOTE 1 Discarding the water from the Dean and Stark receiver introduces the possibility of loss of water soluble components. The losses are not significant in the subsequent determinations. Continue the refluxing for a minimum of 3 h. If at this stage the toluene in the Soxhlet extracto

33、r is not colourless, continue the extraction until the toluene becomes colourless up to a maximum of 6 h. Allow the toluene to cool, then remove the extraction thimble and reject its contents. If necessary a further portion of the sample (e.g. the remainder) is placed in the extraction thimble and t

34、his is extracted (with the same toluene) as described above. Finally remove the extractor from the flask and connect the flask to a distillation apparatus. Distil off approximately 175 ml of toluene. Transfer quantitatively the residue to an evaporating basin and evaporate on a water bath until solv

35、ent free. NOTE 2 It should be taken into consideration that the evaporation of toluene could lead to a loss of some low boiling components of the creosote. Retain the residue, which is the extracted creosote, for subsequent analysis. 8 Sampling report A sampling report shall be written, containing a

36、ll essential information concerning the product sampled and the manner in which the sample was prepared. The report shall at least include the following: a) a reference to this European Standard; b) unambiguous sample identification marks, such as name and number of the label on the sample container

37、; c) date of sampling; d) the approximate size of the batch of creosoted timber; e) the sampling procedure followed based on EN 351-2; any particular points observed in the course of the sampling procedure; f) any operations not specified in the method or regarded as optional which might have affect

38、ed the procedure. BS EN 1014-2:2010EN 1014-2:2010 (E) 8 Bibliography 1 EN 1001-2:2005, Durability of wood and wood based products Terminology Part 2: Vocabulary BS EN 1014-2:2010This page has been intentionally left blank BS EN1014-2:2010BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UK

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