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GB/T 29614-2021: Vulcanized rubber - Determination the content of polycyclic aromatic hydrocarbons
Status: Valid GB/T 29614: Evolution and historical versions
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| GB/T 29614-2021 | English | 519 |
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Vulcanized rubber - Determination the content of polycyclic aromatic hydrocarbons
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GB/T 29614-2021
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| GB/T 29614-2013 | English | 999 |
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Determination the content of polycyclic aromatic hydrocarbons in vulcanized rubber compounds
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Basic data | Standard ID | GB/T 29614-2021 (GB/T29614-2021) | | Description (Translated English) | Vulcanized rubber - Determination the content of polycyclic aromatic hydrocarbons | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G40 | | Word Count Estimation | 26,247 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 29614-2021: Vulcanized rubber - Determination the content of polycyclic aromatic hydrocarbons
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Vulcanized rubber - Determination the content of polycyclic aromatic hydrocarbons
ICS 83.060
CCSG40
National Standards of People's Republic of China
Replace GB/T 29614-2013
Determination of Polycyclic Aromatic Hydrocarbons in Vulcanized Rubber
(ISO 21461.2012,Rubber-Determinationofthearomaticityofoilinvulcanized
Released on 2021-10-11
2022-05-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
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 of Standardization Documents"
Drafting.
This document replaces GB/T 29614-2013 "Determination of Polycyclic Aromatic Hydrocarbons in Vulcanized Rubber", compared with GB/T 29614-2013,
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
---Changed the reagents for sample preparation in Method A (see 4.2.2.1, 4.2.3.1 of the.2013 edition);
---Added optional procedures for the use of acetaldehyde (see 4.4.3.2.9);
---Changed the number of PAHs tested in Method B (see Chapter 5, Chapter 5 of the.2013 edition);
---Changed the extraction reagents in Method B (see 5.2.1, 5.2.1 in the.2013 edition);
---Change the sample weight of method B (see 5.5.1, 5.5.1 of the.2013 edition);
--- Changed the precision data in Appendix D (see Table D.1, Table 1 in the.2013 edition).
This document uses the redrafting method to modify and adopt ISO 21461.2012 "Determination of Aromatic Oil in Rubber Vulcanizates".
Compared with ISO 21461.2012, this document has many structural adjustments. Appendix A lists the differences between this document and ISO 21461.2012.
A list of chapter number comparisons.
The technical differences between this document and ISO 21461.2012 and the reasons are as follows.
---Regarding normative reference documents, this document has made adjustments with technical differences to adapt to China's technical conditions and adjustments
It is collectively reflected in Chapter 2 "Normative Citation Documents", and the specific adjustments are as follows.
● Replace ISO 1407 (see 4.3.2) with GB/T 3516 modified to adopt international standards;
---Changed 4.4.3 "NMR analysis", added 2 test steps that are missing in the international standard;
---Chapter 5 "Method B. Gas Chromatography-Mass Spectrometry" was added, because the determination of polycyclic aromatic hydrocarbons content by gas chromatography-mass spectrometry has been
widely used;
---Change the precision data in Appendix D to the comparison data of domestic laboratories, and add the precision data and configuration of 2 samples at the same time.
To make the data more comprehensive;
---According to the requirements of Method B, an informative appendix E "Retention time, molecular formula,
Relative molecular mass, qualitative ion and quantitative selective ion";
---According to the requirements of Method B, an informative Appendix F "Typical Gas Chromatography-Mass Spectrometry of 18 Polycyclic Aromatic Hydrocarbons and 3 Internal Standards has been added
Chromatogram".
The following editorial changes have been made to this document.
--- In order to coordinate with the existing standards, the standard name was changed to "Determination of Polycyclic Aromatic Hydrocarbon Content in Vulcanized Rubber".
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is organized by the General Test Methods Subcommittee of the National Rubber and Rubber Products Standardization Technical Committee (SAC/TC35/SC2)
Focus.
Drafting organizations of this document. Shanghai Institute of Quality Supervision and Inspection Technology, Shandong Linglong Tire Co., Ltd., Sailun Group Co., Ltd.
Co., Ltd., Triangle Tire Co., Ltd., Anhui Jiatong Passenger Radial Tire Co., Ltd., Double Coin Group Shanghai Tire Research Institute Co., Ltd.
Company, Yiweiyi Rubber Research Institute Co., Ltd., Beijing Physical and Chemical Analysis and Testing Center, Hebei Ideal Composite Material Co., Ltd., Shandong Jinyu Wheel
Tire Co., Ltd., Guizhou Tire Co., Ltd., Shandong Huasheng Rubber Technology Co., Ltd., Fengshen Tire Co., Ltd., Hubei Provincial Standards
Chemical and Quality Research Institute, South-Central University for Nationalities, Beijing Rubber and Tire Testing Technology Service Co., Ltd., Beijing Rubber Industry Research and Design Institute
Limited company.
The main drafters of this document. Liu Jun, Han Chen, Chen Xuemei, Jia Airi, Zeng Haihuan, Ma Xiuju, Zhou Zhongwei, Li Li, Wu Haibin, Dong Wenwu,
Liu Qiang, Zhang Qingzhi, Liu Xuejiao, Shao Peng, Chen Qirong, Li Xuesong, Zhang Yundong, Li Weiguo, Hu Moubing, Wang Lie, Xu Kai, Zhang Yuliang, Liu Qingqing,
Zheng Ningjuan, Luo Zili, Mei Hui, Li Lin, Cang Feifei, Zhang Yuedian, Ding Xiaoying.
This document was first published in.2013, and this is the first revision.
Determination of Polycyclic Aromatic Hydrocarbons in Vulcanized Rubber
Warning---The personnel using this document should have practical experience in formal laboratory work. This document does not indicate all possible safety issues
It is the responsibility of users to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by relevant national laws and regulations.
Note. The procedures specified in the use document may involve the use or production of some substances, and some waste may be generated. This may lead to
Local environmental hazards should be handled and disposed of safely by referring to the corresponding documents after use.
1 Scope
This document describes two methods for determining the PAH content in vulcanized rubber. Method A is hydrogen nuclear magnetic resonance spectroscopy, method B is gas
Gas chromatography-mass spectrometry.
This document applies to the determination of polycyclic aromatic hydrocarbons content in vulcanized rubber, as well as to the determination of polycyclic aromatic hydrocarbons content in tires.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 3516 Determination of rubber solvent extract (GB/T 3516-2006, ISO 1407.1992, MOD)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Polycyclic aromatic hydrocarbon; PAH
A hydrocarbon containing two or more benzene rings in the molecule.
Note. According to the connection mode of the benzene ring, polycyclic aromatic hydrocarbons can be divided into three types. polyphenylene substituted aliphatic hydrocarbons, biphenyl and condensed polycyclic aromatic hydrocarbons.
4 Method A. Proton Nuclear Magnetic Resonance Spectroscopy (1HNMR)
4.1 Principle
In the nonlinear PAH molecular structure composed of three or more rings, there is a typical three-sided concave area at the molecular edge, and the hydrogen atoms in this area
Known as "Bay Area Hydrogen" (see Figure 1), the 1HNMR spectrometer can sensitively identify and quantify the hydrogen atoms in this area, which is called polycyclic aromatics.
The characteristic hydrogen atom of hydrocarbons.
This method describes the steps of using 1HNMR to determine the "Bay Area Hydrogen" content (mass fraction) in the sample solution to characterize vulcanized rubber
Aromatic properties of China Oil. The higher the "Bay Area Hydrogen" content, the higher the aromaticity.
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