Textiles - Determination of aniline
WARNING——Persons using this document shall be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.
1 Scope
This document describes the determination method of free aniline (Method A) and total aniline (Method B) in textiles.
This document is applicable to all kinds of textiles.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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.
GB/T 6682 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.
3.1
free aniline
aniline in the form of chemical residues
3.2
cleavable aniline
aniline produced after reductive cleavage
3.3
total aniline
total of cleavable aniline and free aniline
4 Principle
The specimen is subjected to ultrasonic extraction of free aniline with dichloromethane (Method A), or the total aniline is extracted by liquid-liquid extraction separation method after reduction and decomposition with sodium dithionite (Method B), and then determined by gas chromatography-mass spectrometry (GCMS) or high performance liquid chromatography diode array detector (HPLC DAD), and quantified by gas chromatography-mass spectrometry internal standard method or high performance liquid chromatography external standard method.
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Test procedure
8 Calculation and expression of results
9 Limit of quantification and precision
10 Test report
Annex A (Informative) Extraction method
Annex B (Informative) Example of GC-MS analysis conditions
Annex C (Informative) Example of HPLC-DAD analysis conditions
Bibliography
Textiles - Determination of aniline
WARNING——Persons using this document shall be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.
1 Scope
This document describes the determination method of free aniline (Method A) and total aniline (Method B) in textiles.
This document is applicable to all kinds of textiles.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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.
GB/T 6682 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.
3.1
free aniline
aniline in the form of chemical residues
3.2
cleavable aniline
aniline produced after reductive cleavage
3.3
total aniline
total of cleavable aniline and free aniline
4 Principle
The specimen is subjected to ultrasonic extraction of free aniline with dichloromethane (Method A), or the total aniline is extracted by liquid-liquid extraction separation method after reduction and decomposition with sodium dithionite (Method B), and then determined by gas chromatography-mass spectrometry (GCMS) or high performance liquid chromatography diode array detector (HPLC DAD), and quantified by gas chromatography-mass spectrometry internal standard method or high performance liquid chromatography external standard method.
Contents of GB/T 43832-2024
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Test procedure
8 Calculation and expression of results
9 Limit of quantification and precision
10 Test report
Annex A (Informative) Extraction method
Annex B (Informative) Example of GC-MS analysis conditions
Annex C (Informative) Example of HPLC-DAD analysis conditions
Bibliography
