ISO 9322:2023
(Main)Material used for producing wrappings for cigarette filters, cigarettes and other tobacco products — Determination of acetate and citrate content — Ion chromatographic method
Material used for producing wrappings for cigarette filters, cigarettes and other tobacco products — Determination of acetate and citrate content — Ion chromatographic method
This document specifies an ion chromatographic method for the determination of the acetate and citrate content of materials used to produce wrappings for cigarette filters, cigarettes, and other tobacco products.
Matériaux enveloppes pour les filtres de cigarettes, pour les cigarettes et pour les autres produits du tabac — Détermination de la teneur en acétate et en citrate — Méthode de chromatographie ionique
Le présent document spécifie une méthode de chromatographie ionique pour déterminer la teneur en acétate et en citrate des matériaux enveloppes pour les filtres de cigarettes, pour les cigarettes et pour les autres produits du tabac.
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INTERNATIONAL ISO
STANDARD 9322
First edition
2023-10
Material used for producing
wrappings for cigarette filters,
cigarettes and other tobacco
products — Determination of
acetate and citrate content — Ion
chromatographic method
Reference number
© ISO 2023
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Published in Switzerland
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Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 2
6 Apparatus . 2
7 Preparation . 2
7.1 Preparation of labware . 2
7.2 Preparation of standards . 3
8 Procedure .3
8.1 Sample preparation . 3
8.2 Determination of acetate and citrate by ion chromatography . 4
8.3 External standard calibration . 4
8.4 Sample extraction . 4
8.5 Analysis of samples . 4
9 Calculation . 5
10 Repeatability and reproducibility .5
11 Test report . 6
Annex A (informative) Example chromatogram of the wrapping material samples .7
Bibliography . 8
iii
Foreword
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
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This document was prepared by Technical Committee ISO/TC 126, Tobacco and tobacco products.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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iv
INTERNATIONAL STANDARD ISO 9322:2023(E)
Material used for producing wrappings for cigarette filters,
cigarettes and other tobacco products — Determination of
acetate and citrate content — Ion chromatographic method
1 Scope
This document specifies an ion chromatographic method for the determination of the acetate and
citrate content of materials used to produce wrappings for cigarette filters, cigarettes, and other
tobacco products.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
ISO 187, Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure for
monitoring the atmosphere and conditioning of samples
ISO 287, Paper and board — Determination of moisture content of a lot — Oven-drying method
ISO 3696, Water for analytical laboratory use — Specification and test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
acetate content
anhydrous acetic acid content determined by ion chromatographic method
Note 1 to entry: Acetate is generally added to wrapping materials, in particular cigarette paper, as sodium acetate
[1]
and potassium acetate to influence the burning rate of the cigarette and, consequently, the puff number .
3.2
citrate content
anhydrous citric acid content determined by ion chromatographic method
Note 1 to entry: Citrate is generally added to wrapping materials, in particular cigarette paper, as trisodium
citrate and tripotassium citrate or mixtures thereof to influence the burning rate of the cigarette and,
[2]
consequently, the puff number .
4 Principle
A sample of the wrapping material is extracted using water of Grade 1 specified in ISO 3696, and
the content of acetate and citrate in the extract is determined by ion chromatographic analysis. The
response of acetate and citrate ions is measured using a conductivity detector and the corresponding
content is quantified against an external standard calibration curve.
5 Reagents
5.1 General
All r
...
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