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GB/T 44969-2024: Metal ions removal in water soluble extracts of agricultural products - Ion exchange method
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| GB/T 44969-2024 | English | 199 |
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Metal ions removal in water soluble extracts of agricultural products - Ion exchange method
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GB/T 44969-2024
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Basic data | Standard ID | GB/T 44969-2024 (GB/T44969-2024) | | Description (Translated English) | Metal ions removal in water soluble extracts of agricultural products - Ion exchange method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B00;B09 | | Classification of International Standard | 65.020.01 | | Word Count Estimation | 10,139 | | Date of Issue | 2024-11-28 | | Date of Implementation | 2025-06-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 44969-2024: Metal ions removal in water soluble extracts of agricultural products - Ion exchange method
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Metal ions removal in water soluble extracts of agricultural products - Ion exchange method
Metal ions in water-soluble extracts of agricultural products
Elimination method. ion exchange
Metal ions removal in water soluble extracts of agricultural products-
Ion exchange method
ICS 65.020.01
CCS B 00/09
National Standard of the People's Republic of China
Released on 2024-11-28
2025-06-01 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 Principle ... 1
5 Reagents and Materials ... 1
5.1 Solution preparation 1
5.2 Materials ... 2
6 Instruments and Equipment ... 2
7 Operation steps ... 2
7.1 Dissolution and Filtration 2
7.2 Ion exchange resin pretreatment ... 2
7.3 Ion elimination ... 3
7.4 Ion Exchange Resin Regeneration 3
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 is proposed and coordinated by the China National Institute of Standardization.
This document was drafted by. China National Institute of Standardization, Institute of Process Engineering, Chinese Academy of Sciences, Shenzhen Analysis and Testing Association,
Lanzhou Institute of Chemical Physics, Shenzhen Yirui Biotechnology Co., Ltd., Zhejiang Tiancao Biotechnology Co., Ltd., Guangdong
Yifang Pharmaceutical Co., Ltd., Zhejiang University, Beijing Forestry University, Nanjing University of Science and Technology, Nanjing University, Erlian Customs Technology Center, Beijing
Institute of Analysis and Testing, Institute of Science and Technology, Jiangsu Institute of Quality and Standardization, Nanjing Zhongke Pharmaceutical Co., Ltd., Hanzhong Natural Valley Biotechnology Co., Ltd.
Wu Technology Co., Ltd.
The main drafters of this document are. Xi Xingjun, Lan Tao, Zhan Songkun, Wang Jing, Ouyang Jing, Zhang Guifeng, Pei Dong, Cheng Yong, Sun Dongmei,
Yan Weidong, Yu Congcong, Meng Lingling, Ding Hui, Li Guowei, Feng Peng, Zhou Yajie, Lei Jiandu, Wang Fenghe, Liu Fuqiang, Wang Wei, Wang Bingzhi,
Wang Ping.
Metal ions in water-soluble extracts of agricultural products
Elimination method. ion exchange
1 Scope
This document describes an ion exchange method for the elimination of metal ions from water-soluble plant extracts of agricultural products.
This document applies to lead (Pb2), cadmium (Cd2), mercury (Hg2), arsenic in water-soluble plant extracts of agricultural products such as polysaccharides and polyphenols.
It is suitable for the elimination of major metal ions (AsO33) and free cations of harmful elements, but not for the elimination of free cations with carboxyl (-COOH) and chloride ions (Cl-).
The anionic extract samples were used for reference in large-scale processing.
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 5009.11 National Food Safety Standard Determination of Total Arsenic and Inorganic Arsenic in Food
GB 5009.12 National Food Safety Standard Determination of Lead in Food
GB 5009.15 National Food Safety Standard Determination of Cadmium in Food
GB 5009.17 National Food Safety Standard Determination of Total Mercury and Organic Mercury in Food
GB 5009.268 National Food Safety Standard Determination of Multiple Elements in Food
GB/T 5475 Sampling method for ion exchange resins
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 13659 001×7 Strong acid styrene cation exchange resin
GB/T 16579 D001 Macroporous Strong Acid Styrene Cation Exchange Resin
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Principle
The water-soluble plant extract samples of agricultural products were dissolved in water, mixed and filtered, and the filtrate was passed through a strong acid cation exchange resin column.
The H in the resin reacts with the four harmful elements of lead (Pb2), cadmium (Cd2), mercury (Hg2), and arsenic (AsO33) in the filtrate.
Exchange, and finally rinse with water to complete the elimination process of metal ions.
5 Reagents and Materials
Unless otherwise specified, only analytical grade reagents were used and the water was grade 2 water as specified in GB/T 6682.
5.1 Solution preparation
5.1.1 Hydrochloric acid solution (1 mol/L). Take an appropriate amount of water in a 1 000 mL volumetric flask, accurately measure 86 mL of hydrochloric acid in the volumetric flask, and
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