GB/T 41416-2022 PDF English
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| GB/T 41416-2022 | English | 170 |
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Textiles - Determination of alpha-Bromo cinnamaldehyde and 1, 3-propanesultone
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GB/T 41416-2022: Textiles - Determination of alpha-Bromo cinnamaldehyde and 1, 3-propanesultone---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT41416-2022
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.01
CCS W 04
Textile -- Determination of alpha-bromocinnamaldehyde and
1,3-propanesultone
ISSUED ON: APRIL 15, 2022
IMPLEMENTED ON: NOVEMBER 1, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and Definitions ... 4
4 Principles ... 4
5 Reagents and materials ... 4
6 Instruments and equipment ... 5
7 Analysis steps ... 5
8 Result calculation ... 7
9 Limit of quantitation and precision ... 7
10 Test report... 8
Appendix A (Informative) GC-MS analysis conditions for 1,3-propanesultone and
alpha-bromocinnamaldehyde ... 9
Appendix B (Informative) Total ion chromatogram of GC-MS analysis of 1,3-
propanesultone and alpha-bromocinnamaldehyde ... 10
Textile -- Determination of alpha-bromocinnamaldehyde and
1,3-propanesultone
Warning -- The personnel using this document shall have practical experience in
formal laboratory work. This document does not indicate all possible safety issues.
The user is responsible for taking appropriate safety and health measures and
ensuring compliance with the conditions stipulated by relevant national laws and
regulations.
1 Scope
This document describes a method for the determination of the content of alpha-
bromocinnamaldehyde and 1,3-propanesultone in textiles by using the gas
chromatography-mass spectrometry (GC-MS).
This document applies to all types of textile products.
2 Normative references
There are no normative references in this document.
3 Terms and Definitions
There are no terms and definitions that need to be defined in this document.
4 Principles
After ultrasonic extraction and filtration of the samples with ethyl acetate, determine it
by the gas chromatography-mass spectrometer, qualitatively analyze it by the selected
ion mode, and then quantitatively analyze it by the external standard method.
5 Reagents and materials
Unless otherwise specified, the reagents used shall be of analytical grade.
5.1 Ethyl acetate.
5.2 Alpha-bromocinnamaldehyde (CAS No.: 5443-49-2): purity ≥99%.
5.3 1,3-propanesultone (CAS No.: 1120-71-4): purity ≥95%.
5.4 Standard stock solution: Accurately weigh an appropriate amount of alpha-
bromocinnamaldehyde (5.2) and 1,3-propanesultone (5.3) reference materials
respectively, and dilute them with ethyl acetate (5.1) respectively to prepare the
standard stock solutions with a concentration of about 500 mg/L.
Note: The standard stock solution shall be stored in the dark at 0 °C~4 °C, and the validity period is 6
months.
5.5 Mixed standard working solution: Accurately pipette a certain volume of standard
stock solution (5.4) as needed, and dilute it stepwise with ethyl acetate (5.1) into a series
of mixed standard working solutions with appropriate concentrations.
Note: The mixed standard working solution shall be stored in the dark at 0 °C~4 °C, and it is valid for 1
month.
6 Instruments and equipment
6.1 Gas chromatography-mass spectrometer: It shall be equipped with an electron
impact ion source (EI).
6.2 Balance: The division value shall be 0.1 mg and 0.01 g.
6.3 Temperature-controlled ultrasonic instrument: The temperature control range shall
be 20 °C~60 °C, and the working frequency shall be (40±5) kHz.
6.4 Glass extraction tube with stopper: 100 mL.
6.5 Concentration bottle: It shall be 100 mL with a ground-glass stopper.
6.6 Rotary evaporator.
6.7 Nitrogen blower.
6.8 Organic filter membrane: 0.45µm.
7 Analysis steps
7.1 Preparation and treatment of specimens
Take a representative sample, cut it into pieces with a size of less than 5 mm × 5 mm,
and mix well. Accurately weigh 1.0 g of the above sample, and the weight shall be
accurate to 0.01 g; place it in a 100 mL stoppered glass extraction tube (6.4), add 20
mL of ethyl acetate (5.1), and perform ultrasonic extraction for 20 min at (40±5) °C.
8 Result calculation
8.1 Calculate the content of alpha-bromocinnamaldehyde or 1,3-propanesultone in the
sample according to formula (1):
Where:
X --- The content of alpha-bromocinnamaldehyde or 1,3-propanesultone in the
sample, in milligrams per kilogram (mg/kg);
A --- The peak area of alpha-bromocinnamaldehyde or 1,3-propanesultone in the
sample solution;
c --- The mass concentration of alpha-bromocinnamaldehyde or 1,3-propanesultone
in the standard working solution, in milligrams per liter (mg/L);
As --- The peak area of alpha-bromocinnamaldehyde or 1,3-propanesultone in the
standard working solution;
V --- The volume of the sample solution that is accurate to the scale, in milliliters
(mL);
m --- The mass of the sample, in grams (g).
8.2 The measurement results of this method are expressed as the calculation results of
alpha-bromocinnamaldehyde and 1,3-propanesultone respectively, and the calculation
results are rounded to one decimal place.
9 Limit of quantitation and precision
9.1 Limit of quantitation
In this method, the limit of quantification of alpha-bromocinnamaldehyde is 0.2 mg/kg,
and the limit of quantification of 1,3-propanesultone is 0.5 mg/kg.
9.2 Precision
In the same laboratory, the same operator uses the same equipment, according to the
same test method, and tests the same test object independently within a short period.
The absolute difference between the two test results obtained shall be not greater than
10% of the arithmetic mean of the two measured values; take the confidence coefficient
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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