ISO 21045:2018
Tobacco and tobacco products — Determination of ammonia — Method using ion chromatographic analysis
This document specifies a method for the determination of ammonia in tobacco and tobacco products using ion chromatographic analysis.
It is applicable to tobacco, processed tobaccos, smokeless tobacco products and cigarette filler. The ammonia calibration range specified in the method is from 0,100 μg/ml to 10,0 μg/ml. This range correlates to 10 µg/g to 1 000 µg/g ammonia in tobacco. Samples with higher levels of ammonia can be diluted prior to analysis to bring the samples within the calibration range.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents
7 Preparation
7.1 Preparation of labware
7.2 Preparation of solutions
7.3 Preparation of standards
8 Sampling procedure
8.1 Sample handling
8.2 Preparation of the sample
8.3 Sample analysis
8.3.1 Example ion chromatography parameters
8.3.2 Calibration of the ion chromatograph
8.3.3 Determination of the ammonia content of samples
9 Repeatability and reproducibility
10 Test report
Annex A (informative) Example chromatograms
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents
7 Preparation
7.1 Preparation of labware
7.2 Preparation of solutions
7.3 Preparation of standards
8 Sampling procedure
8.1 Sample handling
8.2 Preparation of the sample
8.3 Sample analysis
8.3.1 Example ion chromatography parameters
8.3.2 Calibration of the ion chromatograph
8.3.3 Determination of the ammonia content of samples
9 Repeatability and reproducibility
10 Test report
Annex A (informative) Example chromatograms
Bibliography