ISO 11024-2:1998 PDF

Name: ISO 11024-2:1998 — Essential oils — General guidance on chromatographic profiles — Part 2: Utilization of chromatographic profiles of samples of essential oils
SKU: ISO 11024-2:1998
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Essential oils — General guidance on chromatographic profiles — Part 2: Utilization of chromatographic profiles of samples of essential oils

Название (английский):

ISO 11024-2:1998

Essential oils — General guidance on chromatographic profiles — Part 2: Utilization of chromatographic profiles of samples of essential oils

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 10 декабря 1998 г.
Издание:: ISO IS 11024 edition 1 version 1
ICS:: 71.100.60

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Описание (английский):

This part of ISO 11024 describes general guidelines on the determination of the compliance of a chromatographic profile of a sample of essential oil under examination with the reference chromatographic profile given in the standard for that oil. NOTE Refer also to ISO 11024-11).

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 11024-2:1998 provides general guidance on the utilization of chromatographic profiles for samples of essential oils. It describes how to determine whether a sample’s gas chromatography (GC) profile conforms to the reference chromatographic profile for a given essential oil. The standard covers instrumentation, sample preparation, identification and quantification of representative and characteristic constituents, and reporting of results.

Key topics and technical requirements

Scope and purpose: Defines procedures to compare a sample chromatogram with the reference chromatographic profile included in the oil-specific standard.

Apparatus: Requires a gas chromatograph with a capillary column, split injector and flame ionization detector (FID), plus a data processing system (integrator/computer) in accordance with ISO 7609.

Sample preparation: Refers to ISO 356 for recommended sample-preparation methods to produce test solutions for GC analysis.

System performance check: Specifies a prescribed test mixture (e.g., n-hexanol, α-pinene, 1,8-cineole, linalool, linalyl acetate, eugenol, β-caryophyllene, benzyl salicylate, etc.) and acceptable percentage-area ranges. Performance acceptance requires target ranges and, for low-level peaks (e.g., n‑decanal), a signal-to-noise ratio greater than 100.

Identification methods: Locating representative and characteristic peaks may use chromatogram-type comparison, retention indices, spiking (standard additions), or GC–MS coupling.

Quantification: Uses surface-area normalization (relative percent area) following ISO 7609 to verify concentrations and concentration ratios against limits in the oil-specific profile.

Reporting: Test reports must document methods, operational details not specified in the standard, observed results, and full sample identification.

Applications and practical value

Quality control and conformity testing: Verify that commercial batches match the chromatographic profile for identity and composition.

Authenticity and adulteration screening: Detect missing or out-of-range representative/characteristic constituents that may indicate adulteration or substitution.

Batch consistency and supplier qualification: Confirm consistency across lots and suppliers by comparing GC profiles to reference limits.

Method verification: Use the standard’s test mixture and acceptance criteria to validate GC system performance for essential oil analysis.

Related standards

ISO 11024-1 - Elaboration of chromatographic profiles for presentation in standards

ISO 356 - Sample preparation for essential oil testing

ISO 7609 - General method for capillary-column gas chromatography of essential oils

Keywords: ISO 11024-2, essential oils, chromatographic profiles, gas chromatography (GC), GC-FID, quality control, chromatogram, representative constituents, characteristic constituents.

ISO 11024-2:1998 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and practical value

Who should use it

Related standards

Технические детали

ISO 7609:1985

Essential oils — Analysis by gas chromatography on capillary columns — General method

SIST ISO 3569:1996

Continuous mechanical handling equipment -- Classification of unit loads

ISO 11024-1:1998

Essential oils — General guidance on chromatographic profiles — Part 1: Preparation of chromatographic profil…