DIN EN 1014-2-2010 en 8817 Wood preservatives - Creosote and creosoted timber - Methods of sampling and analysis - Part 2 Procedure for obtaining a sample of creosote from creosote.pdf

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1、November 2010 Translation by DIN-Sprachendienst.English price group 7No 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).IC

2、S 71.100.50!$l1t“1731481www.din.deDDIN EN 1014-2Wood preservatives Creosote and creosoted timber Methods of sampling and analysis Part 2: Procedure for obtaining asample of creosote from creosoted timber for subsequent analysisEnglish translation of DIN EN 1014-2:2010-11Holzschutzmittel Kreosot (Tee

3、rimprgnierl) und damit imprgniertes Holz Probenahme und Analyse Teil 2: Verfahren zur Probenahme von Kreosot ausimprgniertem Holz fr die nachfolgende AnalyseEnglische bersetzung von DIN EN 1014-2:2010-11Produits de prservation du bois Crosote et bois crosot Mthodes dchantillonnage et danalyse Partie

4、 2: Procdure pour obtenir un chantillonde crosote du bois crosot soumettre une analyse ultrieureTraduction anglaise de DIN EN 1014-2:2010-11SupersedesDIN EN 1014-2:1996-01www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1010.10 DIN

5、EN 1014-2:2010-11 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 38 “Durability of wood and wood-based products” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Hol

6、zwirtschaft und Mbel (Timber and Furniture Standards Committee), Working Committee NA 042-03-06 AA Spiegelausschuss zu CEN/TC 38 und ISO/TC 165/SC 1 Dauerhaftigkeit von Holz und Holzprodukten. Amendments This standard differs from DIN EN 1014-2:1996-01 as follows: a) the standard has been editoriall

7、y revised. Previous editions DIN EN 1014-2: 1996-01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1014-2 June 2010 ICS 71.100.50 Supersedes EN 1014-2:1995English Version Wood preservatives - Creosote and creosoted timber - Methods of sampling and analysis - Part 2: Procedure for obtaining a s

8、ample of creosote from creosoted timber for subsequent analysis Produits de prservation du bois - Crosote et bois crosot - Mthodes dchantillonnage et danalyse - Partie 2: Procdure pour obtenir un chantillon de crosote du bois crosot soumettre une analyse ultrieure Holzschutzmittel - Kreosot (Teerimp

9、rgnierl) und damit imprgniertes Holz - Probenahme und Analyse - Teil 2: Verfahren zur Probenahme von Kreosot aus imprgniertem Holz fr die nachfolgende Analyse This European Standard was approved by CEN on 12 May 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st

10、ipulate 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 application to the CEN Management Centre or to any CEN member. This European Standa

11、rd 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 Management Centre has the same status as the official versions. CEN members are the national stan

12、dards bodies of Austria, Belgium, Bulgaria, Croatia, 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, Sweden, Switzerland and

13、United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1014-2:2

14、010: EEN 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 44.3 Amount of sample45 Reagent .56 Apparatus .57 Procedure for the extraction of creosote from the sample of the creosoted timber 78 Samplin

15、g report .7Bibliography 8DIN EN 1014-2:2010-11 EN 1014-2:2010 (E) 3 Foreword This document (EN 1014-2:2010) has been prepared by Technical Committee CEN/TC 38 “Durability of wood and wood-based products”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of

16、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 withdrawn at the latest by December 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject

17、 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 standard forms part of a series of standards relating to the sampling and analysis of creosote and creosoted timber. The other standards of

18、 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, Wood preservatives Creosote and creosoted timber Methods of sampling and analysis Part 3: Determination of the benzo(a)pyrene content of cr

19、eosote EN 1014-4, Wood preservatives Creosote and creosoted timber Methods of sampling and analysis Part 4: Determination of the water-extractable phenols content of creosote According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound

20、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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Swe

21、den, Switzerland and the United Kingdom. DIN EN 1014-2:2010-11 EN 1014-2:2010 (E) 4 1 Scope This European Standard specifies a procedure for obtaining a sample of creosote from creosoted timber for subsequent analysis. 2 Normative references The following referenced documents are indispensable for t

22、he application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 351-2, Durability of wood and wood-based products Preservative-treated solid wood Part 2: Guidance on sa

23、mpling 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 clearly identifiable collection of units of preservative-treated wood manufactured to conform to the same defined penetration and reten

24、tion 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 creosote may be extracted for further analysis. Samples for analysis shall therefore be taken from a batch of creosoted timber. If i

25、t 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 carried out as soon as possible after the sampling. 4.2 Sampling procedure From the creosoted timber under examination, remove suffici

26、ent 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 in EN 351-2. NOTE Sampling by using borings should be preferred. If this procedure is used, the borings should be cut to include th

27、e 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 necessary for subsequent chemical analysis. The sample shall be converted to particles of a size suitable for Soxhlet extraction. If s

28、torage 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. DIN EN 1014-2:2010-11 EN 1014-2:2010 (E) 5 NOTE Treated timber should normally contain 10 % by mass of creosote. Therefore to obtain 2 g of creosote, about 20 g is ne

29、eded. 5 Reagent Toluene (C6H5CH3), analytical grade with an evaporation residue of less than 0,001 % (m/m). 6 Apparatus Ordinary laboratory equipment, including distillation 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

30、. 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 of 10 ml. 6.6 Reflux condenser. 6.7 Wire gauze made of stainless steel, which is needed to keep the wood pieces in the extractio

31、n thimble. 6.8 Glass phial with screw top. DIN EN 1014-2:2010-11 EN 1014-2:2010 (E) 6 Key 1 Round bottom flask 2 Soxhlet-apparatus and extraction thimble 3 Adaptor that fits between the Soxhlet and the water trap 4 Dean and Stark receiver (water trap) 5 Reflux condenser Figure 1 Extraction apparatus

32、 DIN EN 1014-2:2010-11 EN 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-bottom flask (6.1). Place the sample in the extraction thimble (6.4) and cover with the wire gauze (6.7). If the extrac

33、tion 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 extraction apparatus (see Figure 1) with the round-bottom flask seated in the heating mantle (6.2). Heat the round-bottom

34、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 receiver (6.5). NOTE 1 Discarding the water from the Dean and Stark receiver introduces the possibility of loss of water

35、 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 extractor is not colourless, continue the extraction until the toluene becomes colourless up to a maximum of 6 h. Allow the t

36、oluene 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 this is extracted (with the same toluene) as described above. Finally remove the extractor from the flask and connect

37、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 solvent free. NOTE 2 It should be taken into consideration that the evaporation of toluene could lead to a loss of some l

38、ow 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 all essential information concerning the product sampled and the manner in which the sample was prepared. The report s

39、hall 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; c) date of sampling; d) the approximate size of the batch of creosoted timber; e) the sampling procedure followed b

40、ased 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 affected the procedure. DIN EN 1014-2:2010-11 EN 1014-2:2010 (E) 8 Bibliography 1 EN 1001-2:2005, Durability of wood and wood based products Terminology Part 2: Vocabulary DIN EN 1014-2:2010-11