DD-257-1-2003.pdf
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1、DRAFT FOR DEVELOPMENT DD 257-1:2003 Methods of analysis of wood preservatives and treated timber Part 1: Quantitative analysis of wood preservative solutions and treated timber containing boron compounds Determination of total boron ICS 71.040.40; 71.100.50; 79.040 ? Licensed Copy: London South Bank
2、 University, London South Bank University, Tue Dec 12 05:35:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 257-1:2003 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 31 July 2003 BSI 31 July 2003 The following BSI reference relates to
3、the work on this Draft for Development: Committee reference B/515/2 ISBN 9 580 42014 0 Committees responsible for this Draft for Development The preparation of this Draft for Development was entrusted by Technical Committee B/515, Wood preservatives, to Subcommittee B/515/2, Specifications and chemi
4、cal testing of wood preservatives, upon which the following bodies were represented: Association of Consulting Scientists British Wood Preserving and Damp-proofing Association Chemical Industries Association Creosote Council Department of Trade and Industry represented by the Building Research Estab
5、lishment Timber Trade Federation Co-opted members Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:35:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 257-1:2003 BSI 31 July 2003 i Contents Page Committ
6、ees responsibleInside front cover Forewordii Introduction1 1Scope1 2Normative references1 3Terms and definitions2 4Method 1 Titrimetric method2 5Method 2 Colorimetric method5 6Test report10 Annex A (informative) Method of preparation of azomethine H11 Bibliography13 Licensed Copy: London South Bank
7、University, London South Bank University, Tue Dec 12 05:35:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 257-1:2003 ii BSI 31 July 2003 Foreword This part of DD 257 has been prepared by Subcommittee B/515/2, under the direction of Technical Committee B/515. DD 257 gives a variety of methods of an
8、alysis of wood preservatives and treated timber: DD 257-1 describes a titrimetric method and a colorimetric method for the determination of boron compounds as boric acid in preservative solutions (both aqueous solutions and solutions in hydrocarbon solvents) and in treated timber; DD 257-2 describes
9、 a polarographic method and a thin-layer chromatographic method for the determination of tributyltin, dibutyltin and monobutyltin compounds present in wood preservative solutions and in treated timber; DD 257-3 describes a high performance liquid chromatographic method and a gas chromatographic meth
10、od for the separation and determination of the cis and trans isomers of permethrin in organic solvent-based solutions of wood preservatives; DD 257-4 describes a high performance liquid chromatographic method and a gas chromatographic method for the separation and determination of the cis and trans
11、isomers of cypermethrin in organic solvent-based wood preservative solutions; DD 257-5 describes gas chromatographic methods for the qualitative identification of carboxylic acids in wood preservative solutions containing zinc and copper carboxylates. WARNING. This part of DD 257 calls for the use o
12、f substances and/or procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. Attention is drawn to the Health and Safety at Work etc. Act
13、1974 1 and the Control of Substances Hazardous to Health Regulations 1994 (as amended) 2, and to the need for ensuring that the method of test specified in this standard is carried out with suitable precautions. See safety precautions mentioned in BS 5666-1:1987, Clause 3. It has been assumed in the
14、 preparation of this part of DD 257 that the execution of its provisions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its cor
15、rect application. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature because there is at present insufficient experience in the use of the test method. It should be applied on this provis
16、ional basis, so that information and experience of its practical application can be obtained. In particular, information on precision (repeatability and reproducibility) is sought. A review of this Draft for Development will be carried out not later than 2 years after its publication. Notification o
17、f the start of the review period, with a request for the submission of comments from users of this Draft for Development, will be made in an announcement in the appropriate issue of Update Standards. According to the replies received, the responsible BSI Committee will judge whether the Draft for De
18、velopment can be converted into a British Standard or what other action should be taken. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:35:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 257-1:2003 BSI 31 July 2003 iii Observations which it is felt should r
19、eceive attention before the official call for comments will be welcomed. These should be sent to the Secretary of BSI Technical Committee B/515 at British Standards House, 389 Chiswick High Road, London, W4 4AL. Summary of pages This document comprises a front cover, an inside front cover, pages i t
20、o iv, pages 1 to 13 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:35:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: Lon
21、don South Bank University, London South Bank University, Tue Dec 12 05:35:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 257-1:2003 BSI 31 July 2003 1 Introduction This part of DD 257 describes two methods for the determination of boron compounds as boric acid in preservative solutions and in trea
22、ted timber: a) titrimetric method; and b) colorimetric method. The titrimetric method is suitable for those concentrations of boron compounds, principally sodium borates, in aqueous solution used in the treatment of timber where the boron compounds are the principal preservative component. It is als
23、o suitable for the analysis of timber that has been treated with such solutions. Other wood preservative components are unlikely to be associated with these treatments but it is not known whether such components would interfere with the method if they were present. For the colorimetric procedure, tw
24、o methods of sample preparation are given. The acid extraction procedure is suitable for preservative solutions and treated timber containing copper and chromium compounds in addition to boron compounds. This extraction procedure enables an analyst to determine the copper and chromium contents of th
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