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Remediation and control of heavy metals in paddy field - Part 2: Immobilization
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Basic data
| Standard ID | GB/T 43419.2-2023 (GB/T43419.2-2023) |
| Description (Translated English) | Remediation and control of heavy metals in paddy field - Part 2: Immobilization |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | Z05 |
| Classification of International Standard | 13.080 |
| Word Count Estimation | 11,137 |
| Date of Issue | 2023-11-27 |
| Date of Implementation | 2024-03-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 43419.2-2023: Remediation and control of heavy metals in paddy field - Part 2: Immobilization
---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 13:080
CCSZ05
National Standards of People's Republic of China
Heavy metal control in rice fields
Part 2: Passivation Conditioning
Part 2:Immobilization
Published on 2023-11-27
2024-03-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Passivation Conditioner 1
5 Cadmium passivation conditioning 2
6 Mercury passivation conditioning 2
7 Arsenic passivation conditioning 3
8 Lead passivation conditioning 3
9 Chromium passivation conditioning 4
10 Compound pollution passivation conditioning 4
11 Secondary environmental risk prevention 5
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document is Part 2 of GB/T 43419 "Heavy Metal Control in Rice Fields": GB/T 43419 has published the following parts:
---Part 1: General provisions;
---Part 2: Passivation conditioning;
---Part 3: Physiological barrier:
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China:
This document is under the jurisdiction of the National Soil Quality Standardization Technical Committee (SAC/TC404):
This document was drafted by: Institute of Ecology, Environment and Soil, Guangdong Academy of Sciences, Nanjing Soil Research Institute, Chinese Academy of Sciences, Chinese Academy of Sciences
Ecological Environment Research Center, Agricultural Ecology and Resource Protection Station of the Ministry of Agriculture and Rural Affairs, Zhejiang University, Chinese Academy of Agricultural Sciences Agricultural Resources and Agriculture
Institute of Zoning, Tsinghua University, Jiangsu Institute of Quality and Standardization:
The main drafters of this document: Li Fangbai, Fang Liping, Duan Qiangcheng, Zhao Bin, Zhu Yongguan, Zheng Shunan, Hou Yueli, Hou Deyi, Duan Guilan,
Xu Jianming, Ma Yibing, Liu Chuanping, Liu Tongxu, Chen Junmei, Li Xiaohua, Wu Yundang, Huang Rong, Guan Xulin, Liu Kai, Dou Fei:
Introduction
GB/T 43419 "Heavy Metal Control in Rice Fields" is a technical standard to guide the control of heavy metals in rice fields: It aims to guide the management of heavy metals in rice fields:
Work process, through selecting appropriate treatment technologies, to achieve safe production in contaminated rice fields: GB/T 43419 is planned to consist of three parts:
---Part 1: General principles: The purpose is to provide general technical guidance for the entire process of heavy metal control in rice fields:
---Part 2: Passivation conditioning: The purpose is to select appropriate soil control methods for single and compound pollution of cadmium, mercury, arsenic, lead and chromium in rice fields:
Provide technical guidance on appropriate passivating conditioners:
---Part 3: Physiological barrier: The purpose is to provide technical guidance for selecting appropriate physiological barrier agents for heavy metal control in rice fields:
This document is Part 2 of GB/T 43419, which provides technical guidance for selecting appropriate passivation conditioners for heavy metal control in rice fields, thereby
Improve the soil environment, reduce the availability or total amount of heavy metals in the soil, promote the production of agricultural products to meet standards, achieve sustainable use of soil, and provide rice fields with
Provide standardized support for the development of heavy metal control and environmental protection industries:
Heavy metal control in rice fields
Part 2: Passivation Conditioning
1 Scope
This document specifies the selection, implementation, and impact of passivation conditioners for single and compound polluted rice fields with cadmium, mercury, arsenic, lead, and chromium:
impact factors, secondary environmental risk prevention, etc:
This document is applicable to the treatment of single or composite contaminated soils contaminated by cadmium, mercury, arsenic, lead, and chromium in rice fields:
This document does not apply to the treatment of dry farming and radioactive heavy metal contaminated rice field soil:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB 15618-2018 Soil Environmental Quality Agricultural Land Soil Pollution Risk Management and Control Standards (Trial)
GB/T 43419:1 Heavy metal control in rice fields Part 1: General principles
3 Terms and definitions
The terms and definitions defined in GB/T 43419:1 and the following apply to this document:
3:1
Use single or combined chemical methods such as acid-base neutralization, redox, co-precipitation, and complexation to reduce the effective content of heavy metals in soil
Technology:
3:2
Utilize a certain number of microorganisms with specific functions, or apply functional materials to improve the activity of microorganisms with specific functions, so that heavy metals in the soil are removed:
Electrostatic adsorption on the surface of microbial cells combines with its metabolites to cause precipitation or redox, or is absorbed and enriched by microbial cells:
Technology to reduce its mobility and bioavailability, thereby reducing its accumulation in edible parts of crops:
3:3
Substances that can improve the physical, chemical or biological properties of soil and reduce the effective content or toxicity of heavy metals in soil:
4 passivation conditioner
4:1 Inorganic chemical passivation conditioners, including:
a) Calcium-based passivation conditioners, including lime, limestone, gypsum, dolomite and other agricultural calcareous substances;
b) Silicon-based passivation conditioners, including metasilicate, diatomaceous earth, etc:;
c) Iron-based passivation conditioners, including zero-valent iron, iron oxide minerals, iron salts, etc:;
...
