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GB/T 44374-2024: Determination of performance of pressurized fluid extractor
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Determination of performance of pressurized fluid extractor
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GB/T 44374-2024
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Basic data | Standard ID | GB/T 44374-2024 (GB/T44374-2024) | | Description (Translated English) | Determination of performance of pressurized fluid extractor | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N50 | | Classification of International Standard | 71.040 | | Word Count Estimation | 16,147 | | Date of Issue | 2024-08-23 | | Date of Implementation | 2024-08-23 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 44374-2024: Determination of performance of pressurized fluid extractor---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.
Determination of performance of pressurized fluid extractor
Method for determining the performance of pressurized fluid extractors
ICS 71.040
CCS N 50
National Standard of the People's Republic of China
Released on 2024-08-23
2024-08-23 implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface ... Ⅲ
1 Scope ... 1
2 Normative references ... 1
3 Terms and Definitions ... 1
4 Reagents and Materials ... 2
5 Instruments and equipment ... 2
6 Determination of performance indicators ... 2
6.1 Measurement conditions 2
6.2 Temperature performance ... 3
6.3 Pressure performance ... 3
6.4 Deviation between extraction solvent delivery channels 4
6.5 Consistency of extraction results 5
6.6 Cross contamination 6
Appendix A (Informative) Schematic diagram of pressurized fluid extraction apparatus ... 7
Appendix B (Normative) Determination of oil content in vegetable oils - pressurized fluid extraction method (taking soybean as an example) ... 8
B.1 Test steps 8
B.2 Result calculation 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 for standardization documents"
Drafting is required.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Science and Technology of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee for Standardization of Instrumental Analysis and Testing (SAC/TC 481).
This document was drafted by. China Customs Science and Technology Research Center, China Institute of Metrology, Vicoto (Beijing) Technology Co., Ltd.
Beijing Haiguang Instrument Co., Ltd., Beijing Labtech Instrument Co., Ltd., Ruike Group (Xiamen) Co., Ltd., Beijing
Lindian Weiye Electronic Technology Co., Ltd., Beijing Academy of Agricultural and Forestry Sciences, Beijing Zhongren Testing Technology Service Co., Ltd., Guangxi Zhuang Autonomous Region Radiation
Radiation Environment Supervision and Management Station, Beijing Institute of Standardization, and Beijing Miyun District Center for Disease Control and Prevention.
The main drafters of this document are. Qiu Ye, Liu Xin, Shi Junwen, Song Dewei, Kong Weiheng, Wang Yikai, Yun Huan, Gao Feng, Jia Wenshen,
He Ying, Zhu Tianyu, Song Jialu, Han Shen, Liu Zebin, He Jingming, Li Wenfeng, Jia Yueqin, Yin Xiaobo, Zhang Weiwei, Zhou Jie.
Method for determining the performance of pressurized fluid extractors
1 Scope
This document defines the terms and definitions for the performance measurement of pressurized fluid extractors and describes the measurement methods, including reagents and materials, instrumentation and
Steps for measuring equipment and performance indicators.
This document applies to the temperature performance, pressure performance, extraction solvent delivery channel deviation, extraction result consistency and
Determination of cross contamination.
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.
in this document.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 14488.1 Determination of oil content in vegetable oils
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Pressurized fluid extractor
A type of pretreatment equipment that uses heated and pressurized extraction solvents to quickly extract organic components from solid and semi-solid samples (see schematic diagram)
Figure A.1).
Note 1.A pressurized fluid extractor is also called a rapid solvent extractor or an accelerated solvent extractor.
Note 2.During the extraction process of the pressurized fluid extractor, the extraction temperature and extraction pressure are the core parameters that affect the extraction results.
The set pressure of the extraction cell and its connecting fluid pipes. The extraction temperature refers to the set temperature of the internal heating furnace of the pressurized fluid extractor when extracting samples.
3.2
Heating time
After the extraction cell is loaded into the heating furnace, it begins to be filled with the extraction solvent. The time from the completion of the addition of the extraction solvent to the start of the static extraction is measured.
3.3
Temperature balance between extraction cell and heating oven
When the pressurized fluid extractor extracts the sample, the temperature inside the extraction cell containing the sample and the extraction solvent reaches equilibrium with the temperature of the heating furnace.
process.
3.4
Static extraction time
When the pressurized fluid extractor extracts samples, the extraction starts from the end of the heating time, that is, the extraction temperature and pressure reach the set value, until the first extraction
The time elapsed until the loop ends.
3.5
Cycles of extraction
When a pressurized fluid extractor extracts a sample, the process starts with delivering the extraction solvent (pressurization) and ends with static extraction.
NOTE. The number of extraction cycles performed is also called the cycle number.
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