ISO 23674:2022
Cosmetics — Analytical methods — Direct determination of traces of mercury in cosmetics by thermal decomposition and atomic absorption spectrometry (mercury analyser)
This document specifies an analytical procedure for direct determination of traces of mercury in finished cosmetic products by thermal decomposition – atomic absorption spectrometry (mercury analyser).
This document aims to provide a procedure of quantification of mercury traces in cosmetic products that consumers can be exposed to in their usage. This method describes the determination of mercury traces in cosmetics by direct solid analysis with no need of prior digestion. Total mercury (both inorganic and organic species) can be quantified either in solid or liquid samples.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus and equipment
7 Calibration
7.1 General
7.2 Liquid calibration standards
7.3 Solid calibration standards
8 Procedure
8.1 General
8.2 Preparation of samples
8.2.1 General recommendations
8.2.2 General of samples
9 Instrument parameters
10 Quality control of the analysis
10.1 General
10.2 Quality control procedure
10.2.1 Analysis blanks
10.2.2 Quality control samples
10.2.3 Replicates
11 Calculation
12 Method performance
13 Test report
Annex A (informative) Performance of the method determined by the accuracy profile methodology
Annex B (informative) ISO 23674 and ISO 23821 common ring test results
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus and equipment
7 Calibration
7.1 General
7.2 Liquid calibration standards
7.3 Solid calibration standards
8 Procedure
8.1 General
8.2 Preparation of samples
8.2.1 General recommendations
8.2.2 General of samples
9 Instrument parameters
10 Quality control of the analysis
10.1 General
10.2 Quality control procedure
10.2.1 Analysis blanks
10.2.2 Quality control samples
10.2.3 Replicates
11 Calculation
12 Method performance
13 Test report
Annex A (informative) Performance of the method determined by the accuracy profile methodology
Annex B (informative) ISO 23674 and ISO 23821 common ring test results
Bibliography