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GB/T 41592-2022: Mineral insulating oils - Methods for the determination of 2-furfural and related compounds
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| GB/T 41592-2022 | English | 269 |
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Mineral insulating oils - Methods for the determination of 2-furfural and related compounds
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GB/T 41592-2022
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Basic data | Standard ID | GB/T 41592-2022 (GB/T41592-2022) | | Description (Translated English) | Mineral insulating oils - Methods for the determination of 2-furfural and related compounds | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K15 | | Word Count Estimation | 13,118 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 41592-2022: Mineral insulating oils - Methods for the determination of 2-furfural and related compounds
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Mineral insulating oils - Methods for the determination of 2-furfural and related compounds
ICS 29.040.99
CCSK15
National Standards of People's Republic of China
Mineral insulating oil 2-furfural and related
Method for the determination of components
(IEC 61198.1993, MOD)
Published on 2022-07-11
2023-02-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Method Outline 1
5 Meaning and use 1
6 Instrument 1
6.1 Liquid Chromatograph 1
6.2 Test apparatus or equipment 2
7 Reagent 2
8 Sampling 3
9 Calibration 3
9.1 General 3
9.2 Standard material oil solution 3
9.3 Standard substance chromatography eluent solution 3
9.4 Standard curve establishment 3
10 Test Step 5
10.1 Extraction of analytes 5
10.2 Analysis of extracts 5
11 Calculation 6
12 Report 6
13 Lower detection limit 7
14 Precision7
14.1 General 7
14.2 Repeatability 7
14.3 Reproducibility 7
Appendix A (informative) This document and IEC 61198.1993 structure number comparison list 8
Appendix B (normative) Extraction and Recovery Inspection Procedures 9
B.1 Introduction 9
B.2 Extraction check9
B.3 Recycling Inspection 9
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"
drafted.
This document is modified and adopted IEC 61198.1993 "Mineral insulating oil 2-furfural and related components Determination method".
Compared with IEC 61198.1993, this document has more structural adjustments. This document and IEC 61198.1993 structure numbering changes
See Appendix A for a list of comparisons.
The technical differences between this document and IEC 61198.1993 and their reasons are as follows.
a) The "scope" of this document is rewritten in accordance with the requirements of GB/T 1.1-2020, and the second paragraph of IEC 61198.1993 "scope"
Adjusted to Chapter 4 "Summary of Methods" of this document;
b) IEC 567.1992 has been deleted from the normative reference document. Since Chapter 4 "Sample Labeling" has been deleted in this document, it is no longer necessary to cite it.
In addition to IEC 475.1974; because this document is changed to refer to GB/T 4756 and GB/T 7597;
c) According to the actual needs of our country, GB/T 4756, GB/T 6682, GB/T 7597 are added;
d) Added Chapter 3 "Terms and Definitions", Chapter 5 "Meaning and Use"; deleted Chapter 4 "Sample Standard" of IEC 61198.1993
Note";
e) The order of the chapters "calibration" and "test steps" has been appropriately adjusted according to our country's arrangement habits.
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by China Electrical Equipment Industry Association.
This document is under the jurisdiction of the National Technical Committee for Standardization of Insulating Materials (SAC/TC51).
This document is drafted by. China National Petroleum Corporation Lanzhou Lubricant Research and Development Center, Guilin Saimeng Testing Technology Co., Ltd.
Company, State Grid Zhejiang Electric Power Co., Ltd. Electric Power Research Institute, China National Petroleum Corporation Kunlun Lubrication Testing and Evaluation
Heart, Guilin Electrical Apparatus Research Institute Co., Ltd., China Electric Power Research Institute Co., Ltd., Guangdong Power Grid Co., Ltd. Electric Power Research Institute
Research Institute, Zhejiang Weitong Catalytic New Materials Co., Ltd., Shaanxi Guohongfu Testing Technology Co., Ltd., Guangdong Baijin New Energy Co., Ltd., Xi'an
Jingzhongsheng Technology Co., Ltd., Guangdong Mingkai Technology Co., Ltd., Yiwu Changming Mould Co., Ltd.
The main drafters of this document. Wang Huijuan, Wang Peng, Liu Ying, Zhang Qi, Zhao Jie, Sun Yu, Xie Qi, Chen Xiaoxin, Jin Lingfeng, Zhang Bo, Luo Chuanyong,
Wang Jianyi, Qian Yihua, Fu Qiang, Liu Bin, Ju Jingxi, Li Kui, Lin Hongsong, Liu Yuanzhen, Xiang Huaming, Wan Qinglan, Zhu Changming.
Mineral insulating oil 2-furfural and related
Method for the determination of components
1 Scope
This document describes a method for the determination of 2-furfural and related components in insulating oils by high performance liquid chromatography.
This document applies to the detection of furfural and related components in used mineral insulating oils, as well as new mineral insulating oils.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 4756 Manual sampling method of petroleum liquids (GB/T 4756-2015, ISO 3170.2004, MOD)
GB/T 6682 Analysis Laboratory Water Specifications and Test Methods (GB/T 6682-2008, ISO 3696.1987, MOD)
GB/T 7597 Sampling method of power oil (transformer oil, turbine oil)
3 Terms and Definitions
There are no terms and definitions that need to be defined in this document.
4 Method overview
The furan derivatives in insulating oil were extracted by liquid-liquid extraction method (Method A) or silica gel column solid-phase extraction separation method (Method B).
The extract was then injected into a high performance liquid chromatograph (HPLC) for analysis.
5 Significance and use
5.1 The degradation of cellulosic materials in solid insulation of oil-filled electrical equipment will generate corresponding decomposition products, such as sugars and furan derivatives.
5.2 Furan derivatives, most of which are adsorbed on insulating paper in electrical equipment, are only slightly soluble in oil. Its presence can be used as a test for equipment in use
See additional information on basis and dissolved gas analysis.
6 Instruments
6.1 Liquid Chromatograph
6.1.1 Pumping system. capable of delivering (or using) at least two solvents.
6.1.2 Sampling equipment. suitable for injecting 10 μL ~ 20 μL, and a suitable precision syringe (capacity 50 μL ~ 250 μL).
6.1.3 Reversed-phase carbon-octadecyl or carbon-octadecyl.
6.1.4 A pre-column (optional) packed with the same material as the analytical column.
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