AS 5025.1-2002

1 - AS 5025.1-2002 ESSENTIAL OILS-GENERAL GUIDANCE ON CHROMATOGRAPHIC PROFILES - PREPARATION OF CHROMATOGRAPHIC PROFILES FOR...
4 - PREFACE
6 - CONTENTS
7 - 1 Scope
7 - 2 Normative references
7 - 3 Terms and definitions
8 - 3.1 representative components
8 - 3.2 characteristic components
8 - 3.3 typical chromatogram
8 - 3.4 chromatographic profile
8 - 4 Principle
8 - 5 Samples of the essential oil to be examined
8 - 6 Apparatus
8 - 6.1 Gas chromatograph,
8 - 6.2 Flame ionization detector.
9 - 6.3 Data-processing system
9 - 7 Performance of the apparatus
9 - 7.1 General
9 - 7.2 Preparation and composition of the standard test mixture
9 - 7.3 Procedure
9 - 7.4 Results
10 - 8 Preparation of test sample
10 - 9 Identification and selection of the representative and characteristic components of the essential oil
10 - 10 Fixing the concentration limits
11 - 11 Expression of results
11 - 12 Test report
12 - Annex A - Example of use of the test mixture to verify a gas chromatographic installation
13 - Annex B - Practical example of the elaboration of the chromatographic profile of the essential oil of sage...
13 - B.1 Application of clause 5
13 - B.2 Application of clause 7
13 - B.3 Application of clause 9
15 - B.4 Application of clause 10

Specifies general guidelines on the determination of the chromatographic profile of an essential oil by gas chromatography on a capillary column. This Standard is identical with and has been reproduced from ISO11024-1:1998.

This part of ISO 11024 describes general guidelines on 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 determined 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.

First published as AS 5025.1-2002.