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GB/T 23276-2024: Method for chemical analysis of palladium compounds - Determination of palladium content - Complexometric titration using butanedione dioxime releasing EDTA and gravimetric method
Status: Valid GB/T 23276: Evolution and historical versions
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Method for chemical analysis of palladium compounds - Determination of palladium content - Complexometric titration using butanedione dioxime releasing EDTA and gravimetric method
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GB/T 23276-2024
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| GB/T 23276-2009 | English | 110 |
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Method for chemical analysis of palladium compounds - Determination of palladium content - Complexometric titration using butanedione dioxide releasing EDTA
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GB/T 23276-2009
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PDF similar to GB/T 23276-2024
Basic data | Standard ID | GB/T 23276-2024 (GB/T23276-2024) | | Description (Translated English) | Method for chemical analysis of palladium compounds - Determination of palladium content - Complexometric titration using butanedione dioxime releasing EDTA and gravimetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H15 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 14,182 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-04-01 | | Older Standard (superseded by this standard) | GB/T 23276-2009 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 23276-2024: Method for chemical analysis of palladium compounds - Determination of palladium content - Complexometric titration using butanedione dioxime releasing EDTA and gravimetric method
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Method for chemical analysis of palladium compounds - Determination of palladium content - Complexometric tityation using butanedione dioxime releasing EDTA and gravimetric method
Analysis Methods for Palladium Compounds
Determination of palladium content
Complexometric titration of EDTA precipitation from dimethylglyoxime
and gravimetric method
Method for chemical analysis of palladium compounds-
Complexometric tityation using butanedione dioxime releasing EDTA and
gravimetric method
ICS 77.120.99
CCS H 15
National Standard of the People's Republic of China
Replace GB/T 23276-2009
Published on September 29, 2024, implemented on April 1, 2025
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 Method 1.EDTA complexometric titration of dimethylglyoxime precipitation ... 1
4.1 Principle 1
4.2 Reagents or Materials 1
4.3 Instruments and Equipment 2
4.4 Samples 2
4.5 Test steps 2
4.6 Experimental data processing 3
4.7 Precision 4
5 Method 2.Dimethylglyoxime weight method ... 4
5.1 Principle ... 4
5.2 Reagents or Materials 4
5.3 Instruments and Equipment ... 5
5.4 Samples ... 5
5.5 Test steps ... 5
5.6 Experimental data processing 6
5.7 Precision 6
6 Test Report ... 7
Appendix A (Informative) Raw data of precision test ... 8
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 23276-2009 "Analysis of palladium compounds - Determination of palladium content - Dimethylglyoxime precipitation of EDTA complexes"
Compared with GB/T 23276-2009, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
The lower limit of the measurement range has been changed (see Chapter 1, Chapter 1 of the.2009 edition); a)
The sample weight has been changed (see 4.5.1, 6.1 of the.2009 edition); b)
Changed the dissolution and treatment conditions of the sample for the EDTA complexometric titration method of dimethylglyoxime precipitation (see 4.5.4,.2009 edition).
6.2);
c)
Increased reproducibility (see 4.7.2); d)
The allowable difference has been deleted (see 8.2 of the.2009 edition); e)
Added the dimethylglyoxime gravimetric method (see Chapter 5). f)
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 China Nonferrous Metals Industry Association.
This document is under the jurisdiction of the National Technical Committee on Standardization of Nonferrous Metals (SAC/TC 243).
This document was drafted by. Guiyan Testing Technology (Yunnan) Co., Ltd., Guiyan Chemical Materials (Yunnan) Co., Ltd., Nonferrous Metals Technology
Technology and Economics Research Institute Co., Ltd., Yunnan Precious Metals Laboratory Co., Ltd., CSSC Huanggang Precious Metals Co., Ltd., Shenzhen Zhongjin Lingnan
Shaoguan Smelter of Nonferrous Metals Co., Ltd., National Standard (Beijing) Inspection and Certification Co., Ltd., Guohe General (Qingdao) Testing and Evaluation Co., Ltd.
Company, Chengdu Guangming Paite Precious Metals Co., Ltd., Jiangxi Junxin Precious Metals Technology Materials Co., Ltd., Zhejiang Weitong Catalytic New Materials Co., Ltd.
Company, Northeast Forestry University, Shaanxi Ruike New Materials Co., Ltd., Guangdong Academy of Sciences Industrial Analysis and Testing Center, Yunnan Precious Metals
New Materials Holding Group Co., Ltd.
The main drafters of this document are. Tao Saixiang, Jin Yaqiu, Chen Guohua, Zhu Wuxun, Liu Guihua, Wang Dan, Xiang Lei, Liu Chaoneng, Zhang Hangbo,
Yang Zhenmiao, Zhang Shenghuan, Xia Jiang, Zuo Hongyi, Hu Xuan, Li Tian, Wang Wei, Liu Hanxiao, Sun Yang, Lin Jing, Yu Fengshan, Yang Fan, Liu Bin,
Wang Guanqun, Niu Na, Chen Ligang, Du Bing, Shi Xiaoni, Zhou Ailing, Zhou Shihao, Qin Yongzhen, Sun Qi, Yang Meiying, Lu Ruizhi, and Wang Chuan.
This document was first published as GB/T 23276-2009 in.2009 and this is the first revision.
Analysis Methods for Palladium Compounds
Determination of palladium content
Complexometric titration of EDTA precipitation from dimethylglyoxime
and gravimetric method
Warning - Personnel using this document should have formal laboratory practical experience. This document does not address all possible safety issues.
The user is responsible for taking appropriate safety and health measures and ensuring that the conditions specified in relevant national laws and regulations are met.
Mask and gloves.
1 Scope
This document describes a method for the determination of palladium in palladium compounds by complexometric titration with EDTA precipitation with dimethylglyoxime and by the gravimetric method.
This document is applicable to the determination of palladium content in palladium compounds, and the measurement range (mass fraction) is 4.00% to 70.00%.
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
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Method 1.Complexometric titration of dimethylglyoxime precipitating EDTA
4.1 Principle
The sample was dissolved with hydrochloric acid and nitric acid, organic matter was decomposed with fuming perchloric acid, excessive EDTA was added to complex palladium, and acetic acid and sodium acetate were added to buffer the solution.
Liquid, xylenol orange as indicator, under the condition of pH ≈ 5.8, use zinc standard titration solution to titrate excess EDTA, add dimethylglyoxime to precipitate
The EDTA complexed with palladium is extracted with chloroform to obtain dimethylglyoxime-palladium precipitate, and the palladium content is determined by titration with zinc standard titration solution.
4.2 Reagents or materials
Reagents or materials are as follows. Unless otherwise specified, only reagents confirmed to be of analytical grade were used in the analyses.
4.2.1 Water (grade 2 water in accordance with GB/T 6682).
4.2.2 Chloroform.
4.2.3 Perchloric acid (ρ = 1.77 g/mL).
4.2.4 Hydrochloric acid (ρ=1.19 g/mL).
4.2.5 Nitric acid (ρ = 1.42 g/mL).
4.2.6 Hydrochloric acid solution (1 1).
4.2.7 Nitric acid solution (1 1).
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