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Leather - Chemical tests - Determination of pesticide residues content
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Basic data
| Standard ID | GB/T 43819-2024 (GB/T43819-2024) |
| Description (Translated English) | Leather - Chemical tests - Determination of pesticide residues content |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | Y46 |
| Classification of International Standard | 59.140.30 |
| Word Count Estimation | 22,298 |
| Date of Issue | 2024-03-15 |
| Date of Implementation | 2024-10-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 43819-2024: Leather - Chemical tests - Determination of pesticide residues content
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 59.140.30
CCSY46
National Standards of People's Republic of China
Leather chemical test - Determination of pesticide residues
(ISO 22517.2019,MOD)
Released on 2024-03-15
2024-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface I
Introduction II
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle 1
5 Reagents and Materials 1
6 Instruments and equipment 2
7 Sampling and sample preparation 2
7.1 Sampling 2
7.2 Preparation of samples 2
8 Test Step 2
8.1 Extraction 2
8.2 Purification 2
8.3 Determination 3
8.4 Blank test 3
8.5 GC-MS analysis 3
8.6 Qualitative and quantitative determination 3
9 Result calculation 4
10 Feasibility of the method 4
10.1 Detection Limit 4
10.2 Precision 4
10.3 Recovery rate 4
11 Test Report 4
Appendix A (Informative) Comparison of structure numbers between this document and ISO 22517.2019 5
Appendix B (Informative) Technical differences between this document and ISO 22517.2019 and their causes 6
Appendix C (Informative) Information on 24 pesticide compounds 8
Appendix D (Informative) GC-MS Conditions and Parameters 9
Appendix E (Informative) Retention time, quantitative ions, qualitative ions and ion abundance ratios of 24 pesticides
Appendix F (Informative) Start time and retention time of each group of monitored ions 11
Appendix G (Informative) GC-MS Selected Ion Chromatograms of 24 Pesticide Standards 12
Appendix H (Informative) Precision of the Method 13
Appendix I (Informative) Recovery of the method (n=6) 16
References 19
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document is modified to adopt ISO 22517.2019 “Determination of pesticide residues in leather chemical tests”.
Compared with ISO 22517.2019, this document has many structural adjustments. Comparison table of structural number changes between the two documents
See Appendix A.
This document has many technical differences compared to ISO 22517.2019.
A single line (|) is used to indicate these technical differences. A list of these technical differences and their reasons is given in Appendix B.
The following editorial changes were made to this document.
--- Changed the expression of the mixed solution volume ratio (see 5.5, 5.6);
--- Changed the names of solutions corresponding to different concentrations (see 5.8, 5.9);
--- Changed the concentration unit of the standard working solution (see 5.10 and 8.3.1);
--- Changed the names of some article titles (see Chapter 8);
--- Changed the expression method of relative ion abundance range (see 8.6);
--- Added notes on GC-MS analysis (see 8.6);
--- Added formula numbering (see Chapter 9);
--- Changed the ranking of various pesticides (see Appendix C);
--- Added the header names in the appendix (see Appendix C, Appendix E, Appendix F and Appendix H);
--- Changed the data source of “precision of the method” and added the numbers of various pesticides (see Appendix H);
--- Changed the data presentation of “method recovery” (see Appendix I).
This document was proposed by China Light Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Leather Industry (SAC/TC252).
This document was drafted by. Rongcheng Customs of the People's Republic of China, Jimei University, Zhejiang Shenghui Chemical Co., Ltd., China Textile Standards (Shenzhen) Testing
Co., Ltd., Fuzhou Customs Technology Center, China Leather and Footwear Industry Research Institute (Jinjiang) Co., Ltd., Tianchuang Fashion Co., Ltd.,
Dongguan Hebiao Technology Co., Ltd., Fujian Academy of Agricultural Sciences Agricultural Quality Standards and Testing Technology Research Institute, Quanzhou Customs Comprehensive Technical Services
Center, AOF (Shanghai) Testing Technology Co., Ltd., Guangzhou William Stephen Trading Co., Ltd., China Leather and Shoe Research Institute Co., Ltd.,
China Light Industry Inspection and Certification Co., Ltd.
The main drafters of this document are. Chen Xuecan, Hu Zongxiang, Dai Jinlan, Wang Wenqi, Liu Peng, Wei Hang, Zou Qiang, Jiang Sujie, Ni Jianming, Qu Xinghe,
Wang Huali, Pang Xiaolan, Chen Xing, Ren Keshuai.
Introduction
Pesticide residues in leather mainly come from animal breeding and raw leather preservation processes, and enter the leather through human skin contact or after disposal.
The soil then enters the human body through the food chain.
According to the ISO /T R16178 Technical Report, there may be 20 pesticides in leather that are harmful to human health and the environment, including DDT.
Ten pesticides, including DDT, lindane, and endosulfan, have been listed in the Stockholm Convention on Persistent Organic Pollutants (POPs Convention).
It is a banned organic pesticide. Its residue is easy to accumulate, migrate, and resist degradation. Once it enters the human body, it can cause cancer, teratogenesis, mutagenesis, and endocrine disruption.
The hazards have attracted wide international attention.
At present, the international community has formed a method standard for the determination of pesticide residues in leather, but my country has not yet developed relevant standards.
Quality control in production and trade has brought certain difficulties.
product quality, protect consumers and environmental safety, strengthen market safety supervision and environmental protection, standardize market order, and evaluate the leather industry's long-term prevention and control
It is urgent to improve the effectiveness of prevention and control measures for toxic organic pollutants, accelerate scientific research and technical exchanges and cooperation, and promote green development of the industry.
Set standards to meet industry needs.
The issuing agency of this document draws attention to the fact that claims of compliance with this document may involve the use of patents related to the test procedures in Chapter 8.
The issuing organization of this document takes no position on the authenticity, validity and scope of this patent.
The patent holder has promised to the issuing agency of this document that he is willing to cooperate with any applicant under reasonable and non-discriminatory terms and conditions.
The patent holder's statement has been filed with the issuing authority of this document.
The following contact information is obtained.
Name of patent holder. Quanzhou Customs Comprehensive Technical Service Center; Institute of Agricultural Quality Standards and Testing Technology, Fujian Academy of Agricultural Sciences
Address. No. 110, South Section of Citong East Road, Fengze District, Quanzhou City, Fujian Province; No. 247, Wusi Road, Gulou District, Fuzhou City, Fujian Province
Zip code.362200;350003
Please note that in addition to the above patents, some of the contents of this document may still involve patents. The issuing agency of this document does not assume the responsibility for identifying patents.
responsibility.
Leather chemical test - Determination of pesticide residues
Warning. Some pesticides may be potentially harmful to humans. Any handling and disposal of such substances should be strictly in accordance with applicable health regulations.
The test should be carried out in accordance with health and safety requirements; good laboratory operating practices should be followed and necessary safety measures should be taken during the test.
1 Scope
This document describes a test method for the determination of 24 pesticide residues in leather by gas chromatography-mass spectrometry (GC-MS).
This document applies to the determination of pesticide residues in various types of leather and their products.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 39364 Sampling locations for chemical, physical, mechanical and colour fastness tests on leather (GB/T 39364-2020, ISO 2418.
2017,MOD)
QB/T 2716 Preparation of leather chemical test samples (QB/T 2716-2018, ISO 4044.2008, MOD)
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Principle
The leather sample was ultrasonically extracted with a mixed solution of n-hexane and ethyl acetate (volume ratio 1.1). After purification by a solid phase extraction column, the purified solution was used.
GC-MS was used for detection and confirmation, and external standard method was used for quantification.
5 Reagents and Materials
Unless otherwise specified, all reagents used were of analytical grade.
5.1 n-Hexane, chromatographic grade.
5.2 Ethyl acetate, chromatographic grade.
5.3 Acetonitrile, chromatographic grade.
5.4 Toluene, chromatographic grade.
5.5 n-hexane-ethyl acetate mixed solution. mix n-hexane (5.1) and ethyl acetate (5.2) in a volume ratio of 1.1.
5.6 Acetonitrile-toluene mixed solution. mix acetonitrile (5.3) and toluene (5.4) in a volume ratio of 3.1.
5.7 Standard substances of 24 pesticides (see Appendix C), purity ≥ 97%.
5.8 Pesticide standard stock solution. weigh an appropriate amount of each pesticide standard (accurate to 0.1 mg), dissolve it in a small amount of n-hexane (5.1) and
Prepare a standard stock solution with a mass concentration of 100 μg/mL, or use a commercially available standard stock solution.
5.9 Pesticide mixed standard solution. Accurately transfer a certain volume of each pesticide standard stock solution (5.8) into a volumetric flask and
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