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GB/T 37321-2019: Chemical analysis methods of different sulfur forms in gypsum and gypsum products
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 37321-2019 | English | 359 |
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Chemical analysis methods of different sulfur forms in gypsum and gypsum products
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GB/T 37321-2019
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Basic data | Standard ID | GB/T 37321-2019 (GB/T37321-2019) | | Description (Translated English) | Chemical analysis methods of different sulfur forms in gypsum and gypsum products | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q27 | | Classification of International Standard | 91.100.10 | | Word Count Estimation | 18,156 | | Date of Issue | 2019-03-25 | | Date of Implementation | 2020-02-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 37321-2019: Chemical analysis methods of different sulfur forms in gypsum and gypsum products
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Chemical analysis methods of different sulfur forms in gypsum and gypsum products
ICS 91.100.10
Q27
National Standards of People's Republic of China
Form sulfur in gypsum and gypsum products
Chemical analysis method
Published on.2019-03-25
2020-02-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword I
Introduction II
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 basic requirements of the test 1
5 Preparation of sample 2
6 Continuous determination of sulfites and sulfides (ion chromatography) 2
7 Separation of sulfides (ion chromatography) 7
8 Determination of elemental sulfur (ion chromatography) 9
9 Determination of elemental sulfur (liquid chromatography) 11
10 Determination of sulfate 13
11 Test report 13
Appendix A (Normative Appendix) Analysis Results Acceptance Procedures 14
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed and managed by the China Building Materials Federation.
This standard was drafted. China Building Materials Inspection and Certification Group Co., Ltd., Fujian Zhengba New Materials Co., Ltd., China Building Materials
Inspection and Certification Group Beijing Tianyu Co., Ltd., Building Materials Industry Technical Information Research Institute, Shenzhen Guangtian Group Co., Ltd., Jiangsu Yi
Fu Technology Co., Ltd., Saint-Gobain Gypsum Building Materials (Shanghai) Co., Ltd., Changzhou Huatong Xinli Flooring Co., Ltd.
The main drafters of this standard. Guo Zhongbao, Xu Danhua, Wu Jinglong, Xue Jihui, Qin Xianming, Yang Zaiyin, Li Nan, Chen Chunliu, Liu Jianfeng, Xu Fei,
Li Shaoqiang, Liu Wenxiong, Li Man, Zhao Wenyan, Guan Hongyan, Liu Shihua, Han Wei, Ding Jianjun, Wang Mingyu, Yuan Qingdan, Bai Yongzhi.
Introduction
The issuing organization of this document draws attention to the fact that when the statement is in compliance with this document, it may involve the determination of the elemental sulfur content of the building material.
Method (Patent No. ZL201210384906.9) and Patent "Continuous Determination of Sulfite and Sulfide Content in Building Materials and Geological Materials"
Method (Patent No. ZL201310009136.4) use of related content.
The issuing organization of this document has no position on the authenticity, validity and scope of the patent.
The holder of the patent has assured the issuing authority of this document that he is willing to work with any applicant on reasonable and non-discriminatory terms and conditions.
Negotiate on patent licensing. The patent holder's statement has been filed with the issuing authority of this document. Related information can be passed the following
Contact information obtained.
Patent holder. China Building Materials Inspection and Certification Group Co., Ltd.
Address. China Building Materials General Institute, No. 1 Guanzhuang Dongli, Chaoyang District, Beijing
Please note that in addition to the above patents, certain aspects of this document may still involve patents. The issuing organization of this document does not undertake to identify these special
Liability.
Form sulfur in gypsum and gypsum products
Chemical analysis method
1 Scope
This standard specifies the chemical analysis of different forms of sulfur such as sulfite, sulfide, elemental sulfur and sulfate in gypsum and gypsum products.
method.
This standard applies to natural gypsum, flue gas desulfurization gypsum, phosphogypsum, fluorogypsum and other gypsum raw materials and gypsum products in the sulfite, vulcanization
Determination of substances, elemental sulfur and sulfate.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 5484 gypsum chemical analysis method
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Formal sulfur differentsulfurforms
Sulfur in the form of sulfites, sulfides, elemental sulfur and sulfates in gypsum and gypsum products.
4 basic requirements of the test
4.1 Reagents
Unless otherwise stated, the reagents used in the test shall not be lower than the analytical grade, and the water used shall meet the secondary water requirements specified in GB/T 6682.
The density of commercially available concentrated liquid reagents listed in this standard refers to a density (ρ) at 20 ° C in grams per cubic centimeter (g/cm 3 ).
The acid used is not a concentration of any of the commercially available concentrated acids.
4.2 Number of tests and requirements
The number of tests for each measurement is specified as two times, and the average of the results of the two tests is used to indicate the measurement results. Validity of results
Follow the procedure in Appendix A.
4.3 Blank test
Unless otherwise specified, the same amount of reagent is used, no sample is added, and the test is performed according to the same measurement procedure.
Make corrections.
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