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GB/T 22924-2024: Determination of biuret content for compound fertilizers
Status: Valid GB/T 22924: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22924-2024 | English | 219 |
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Determination of biuret content for compound fertilizers
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GB/T 22924-2024
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| GB/T 22924-2008 | English | 130 |
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Determination of biuret content for compound fertilizers (complex fertilizers)
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GB/T 22924-2008
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PDF similar to GB/T 22924-2024
Standard similar to GB/T 22924-2024 GB 18382 GB/T 22923 GB/T 19203 GB/T 45891 Basic data | Standard ID | GB/T 22924-2024 (GB/T22924-2024) | | Description (Translated English) | Determination of biuret content for compound fertilizers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G20 | | Classification of International Standard | 65.080 | | Word Count Estimation | 11,190 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-04-01 | | Older Standard (superseded by this standard) | GB/T 22924-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 22924-2024: Determination of biuret content for compound fertilizers---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 biuret content for compound fertilizers
Determination of Biuret Content in Compound Fertilizers
ICS 65.080
CCS G20
National Standard of the People's Republic of China
Replaces GB/T 22924-2008
Released on 2024-09-29
2025-04-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
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.
This document replaces GB/T 22924-2008 "Determination of biuret content in compound fertilizers (compound fertilizers)" and is consistent with GB/T 22924-2008
In comparison, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
High performance liquid chromatography was determined as the referee method (see Chapter 4); -
Changed the relevant technical content of high performance liquid chromatography (see 5.2, 3.2 of the.2008 edition). -
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 China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Fertilizers and Soil Conditioners (SAC/TC 105).
This document was drafted by. Shanghai Chemical Industry Research Institute Testing Co., Ltd., Xinyangfeng Agricultural Science and Technology Co., Ltd., Guizhou Product Quality Inspection Co., Ltd.
Testing Institute, Shanghai Chemical Industry Research Institute Co., Ltd., Sinochem Fertilizer Co., Ltd., Shandong Product Quality Inspection Institute.
The main drafters of this document are. Huang Heqing, Yang Lei, Zhou Daying, Wang Xinhui, Ma Xinping, Zhang Juan, Huang Fulin, Wang Lu, Yin Jiong, Zhu Hairong,
Cheng Huapeng, Zhang Hui, and Gao Luyang.
The previous versions of this document and the documents it replaces are as follows.
GB/T 22924-2008.-
Determination of Biuret Content in Compound Fertilizers
WARNING - Personnel using this document should have practical experience in formal laboratory work. This document does not purport to address all possible safety issues.
The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.
1 Scope
This document describes a method for the determination of biuret content in compound fertilizers by HPLC or spectrophotometry.
This document is applicable to the determination of biuret content in compound fertilizers containing urea.
It can be implemented as a reference.
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 6274 Terminology of fertilizers and soil conditioners
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 8571 Compound fertilizer laboratory sample preparation
GB/T 15063 Compound fertilizer
3 Terms and definitions
The terms and definitions defined in GB/T 6274 and GB/T 15063 apply to this document.
4 Method Summary
After ultrasonic extraction of biuret in the sample, the content of biuret was determined by HPLC or spectrophotometry.
Chromatography is the referee method.
5 Test methods
5.1 Sample preparation
Laboratory samples (commonly known as test specimens) for analysis are prepared according to GB/T 8571.
5.2 Method 1 High Performance Liquid Chromatography
5.2.1 Principle
The biuret in the sample was extracted with acetonitrile and water solution (mobile phase) and separated by reversed phase liquid chromatography with amino/aminopropyl column.
The content of biuret was quantified and calculated using an ultraviolet detector or a diode array detector.
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