ISO-11024-1-1998.pdf
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1、A Reference number ISO 11024-1:1998(E) INTERNATIONAL STANDARD ISO 11024-1 First edition 1998-12-01 Essential oils General guidance on chromatographic profiles Part 1: Preparation of chromatographic profiles for presentation in standards Huiles essentielles Directives gnrales concernant les profils c
2、hromatographiques Partie 1: laboration des profils chromatographiques pour la prsentation dans les normes Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:18:18 MDTNo reproduct
3、ion or networking permitted without license from IHS -,-,- ISO 11024-1:1998(E) ISO 1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without perm
4、ission in writing from the publisher. International Organization for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetisoiso.ch Printed in Switzerland ii ContentsPage 1Scope .1 2Normative references 1 3Terms and definitions 1 4Principle 2 5Samples of the essential oil to be exami
5、ned .2 6Apparatus .2 7Performance of the apparatus 3 8Preparation of test sample 4 9Identification and selection of the representative and characteristic components of the essential oil .4 10 Fixing the concentration limits .4 11 Expression of results .5 12 Test report 5 Annex A (informative) Exampl
6、e of use of the test mixture to verify a gas chromatographic installation .6 Annex B (informative) Practical example of the elaboration of the chromatographic profile of the essential oil of sage (Salvia officinalis L.) 7 Copyright International Organization for Standardization Provided by IHS under
7、 license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:18:18 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOISO 11024-1:1998(E) iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of nat
8、ional standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Interna
9、tional organizations, governmental and non- governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the
10、rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO
11、 11024-1 was prepared by Technical Committee ISO/TC 54, Essential oils. International Standard ISO 11024 consists of the following parts, under the general title Essential oils General guidance on chromatographic profiles: Part 1: Preparation of chromatographic profiles for presentation in standards
12、 Part 2: Utilization of chromatographic profiles of samples of essential oils Annexes A and B of this part of ISO 11024 are for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Res
13、ale, 04/20/2007 06:18:18 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:18:18 MDTNo reproduction or
14、networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISOISO 11024-1:1998(E) 1 Essential oils General guidance on chromatographic profiles Part 1: Preparation of chromatographic profiles for presentation in standards 1 Scope This part of ISO 11024 describes general guidelines on
15、 the determination of the chromatographic profile of an essential oil by gas chromatography on a capillary column. The chromatographic profile is one of the specifications which enables assessment of the quality of an essential oil in the same way as the physico-chemical characteristics. It is deter
16、mined at the time of finalizing the standard on the essential oil. It is not a determination of the true concentration of the components, it is only an evaluation of its relative proportions. NOTE Refer also to ISO 11024-21) for use of chromatographic profiles of samples of essential oils. 2 Normati
17、ve references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 11024. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on
18、this part of ISO 11024 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid
19、 International Standards. ISO 356, Essential oils Preparation of test samples. ISO 7609, Essential oils Analysis by gas chromatography on capillary columns General method. 3 Terms and definitions For the purposes of this part of ISO 11024 the following terms and definitions apply. 1) ISO 11024-2, Es
20、sential oils General guidance on chromatographic profiles Part 2: Utilization of chromatographic profiles of samples of essential oils. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20
21、/2007 06:18:18 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 11024-1:1998(E) ISO 2 3.1 representative components components present in all of the samples of the essential oil involved, whether major or minor ones EXAMPLE Geranyl formate, isomenthone, citronnellal, ger
22、aniol, etc. in the essential oil of geranium. 3.2 characteristic components one or more representative components, the concentration of which is characteristic for a given essential oil NOTE The concentration may be nil. EXAMPLES Guaia-6,9-diene is present in traces in the Africa geranium and presen
23、t in higher concentrations in the Bourbon geranium. 10-Epi-gamma-eudesmol is absent in the Bourbon geranium and present in the Africa geranium. Camphor is present in quantities of less than 0,5 % in lavender. 3.3 typical chromatogram graphical representation obtained by injection into the chromatogr
24、aph of a sample of an essential oil considered to be representative of production, together with the operating conditions under which it was obtained NOTE The chromatogram is for information only. 3.4 chromatographic profile list of components selected among the representative and characteristic com
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