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GB/T 3654.8-2023: Ferroniobium - Determination of titanium content - Chromotropic acid photometric method and diantipyrylmethane photometric method
Status: Valid GB/T 3654.8: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 3654.8-2023 | English | 309 |
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Ferroniobium - Determination of titanium content - Chromotropic acid photometric method and diantipyrylmethane photometric method
| Valid |
GB/T 3654.8-2023
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| GB/T 3654.8-2008 | English | 239 |
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Ferroniobium -- Determination of titanium content -- Chromotropic acid photometric method
| Obsolete |
GB/T 3654.8-2008
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| GB/T 3654.8-1983 | English | 199 |
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Methods for chemical analysis of ferroniobium--The chromotropic acid photometric method for the determination of titanium content
| Obsolete |
GB/T 3654.8-1983
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PDF similar to GB/T 3654.8-2023
Basic data | Standard ID | GB/T 3654.8-2023 (GB/T3654.8-2023) | | Description (Translated English) | Ferroniobium - Determination of titanium content - Chromotropic acid photometric method and diantipyrylmethane photometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H11 | | Classification of International Standard | 77.100 | | Word Count Estimation | 15,142 | | Date of Issue | 2023-11-27 | | Date of Implementation | 2024-06-01 | | Older Standard (superseded by this standard) | GB/T 3654.8-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 3654.8-2023: Ferroniobium - Determination of titanium content - Chromotropic acid photometric method and diantipyrylmethane photometric method
---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 77:100
CCSH11
National Standards of People's Republic of China
Replace GB/T 3654:8-2008
Determination of ferroniobium titanium content chromotropic acid
Photometry and diantipyrine methane photometry
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
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 8 of GB/T 3654: GB/T 3654 has released the following parts:
---Chemical analysis method of ferroniobium to determine the amount of niobium and tantalum by paper chromatographic separation gravimetric method;
---Determination of ferroniobium copper content by new cuproline-chloroform extraction photometric method;
---Gravimetric method for determination of ferroniobium silicon content;
---Chemical analysis method of ferroniobium to determine carbon content by combustion gravimetric method;
---Chemical analysis method of ferroniobium Determination of phosphorus content by molybdenum blue photometry;
---Determination of niobium iron sulfur content by combustion iodine content, methine blue photometry and infrared absorption method;
---Determination of niobium iron titanium content by color-changing acid photometry and diantipyrine methane photometry;
---Chemical analysis method of ferroniobium: Determination of tungsten content by thiocyanate photometry:
This document replaces GB/T 3654:8-2008 "Determination of niobium iron and titanium content by chromophoric acid photometric method": With GB/T 3654:8-2008
In comparison, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Changed the "Instruments and Equipment" of the chromotropic acid photometry (see 4:3, Chapter 5 of the:2008 edition);
b) The “number of measurements” of the chromotropic acid photometric method has been increased (see 4:5:1);
c) The sample dissolution method of the chromotropic acid photometry method has been changed (see 4:5:4:1, 7:3:1 of the:2008 version);
d) The amount of chromogenic solution added for the color-changing acid photometric method has been changed (see 4:5:4:5, 7:3:5 of the:2008 edition);
e) Changed the "Calculation and Presentation of Analytical Results" of the chromotropic acid photometric method (see 4:6, Chapter 8 of the:2008 edition);
f) Changed the “precision” of the chromotropic acid photometry (see 4:7, Chapter 9 of the:2008 edition);
g) Added "diantipyrine methane photometry" (see Chapter 5);
h) Added "Flowchart of Sample Analysis Results Acceptance Procedure" (see Appendix A):
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 China Iron and Steel Industry Association:
This document is under the jurisdiction of the National Pig Iron and Ferroalloy Standardization Technical Committee (SAC/TC318):
This document was drafted by: Bengang Plate Co:, Ltd:, Guangxi Liuzhou Iron and Steel Group Co:, Ltd:, Qingdao Bozheng Inspection Technology Co:, Ltd:
Company, Wuhan University of Science and Technology, CITIC Jinzhou Metal Co:, Ltd:, Jitie Ferroalloy Co:, Ltd:, and Metallurgical Industry Information Standards Research Institute:
The main drafters of this document: Li Yuehua, Tian Yuwei, Yu Lihong, Jiao Bin, Gong Jing, Wu Xu, Zhu Weigang, Duan Fuchun, Su Benqiang, Wang Yapeng,
Cao Yingnan, Wang Ping, Lian Xiping, He Huan, Wei Yandong, Man Yi, Wu Ying, Wang Xilong, Sun Zhuo, Li Qiang, Zhou Shuangqing, Lu Xuemei, Wang Haijun, Xin Jin,
Zhang Can, Zheng Haidong, Fan Yu, Wang Min, Zhang Chen, Liu Yanting:
The previous versions of this document and the documents it replaces are as follows:
---First published as GB 3654:8-1983 in 1983, first revised in:2008;
---This is the second revision:
Introduction
Since there are many detection elements involved in the ferroniobium detection process, the applicable scope and application methods of the elements are different: To ensure niobium
For the convenience and accuracy of iron detection standards, we have established a national standard system to support the detection of ferroniobium based on the analysis methods of different elements of ferroniobium:
Tie: The GB/T 3654 series of analytical methods for ferroniobium is the basic standard for ferroniobium testing in my country and consists of the following 8 parts:
---Chemical analysis method of ferroniobium: Determine the amount of niobium and tantalum by paper chromatographic separation gravimetric method: The purpose is to measure the niobium and tantalum content in ferroniobium
Quantity, using paper chromatography gravimetric method:
---Determination of ferroniobium copper content by new cuproline-chloroform extraction photometric method: The purpose is to measure the copper content in ferroniobium, using
New cuproline-chloroform extraction photometric method:
---Gravimetric method for determination of ferroniobium silicon content: The purpose is to measure the silicon content in ferroniobium, using the gravimetric method:
---Chemical analysis method of ferroniobium: Determination of carbon content by combustion gravimetric method: The purpose is to measure the carbon content in ferroniobium, using the combustion gravimetric method:
---Chemical analysis method of ferroniobium: Determination of phosphorus content by molybdenum blue photometry: The purpose is to measure the phosphorus content in ferroniobium, using the molybdenum blue photometric method:
---Determination of niobium iron sulfur content by combustion iodine method, methine blue photometry and infrared absorption method: The purpose is to measure the
The sulfur content was determined by combustion iodine content, methylene blue photometry and infrared absorption method:
---Determination of niobium iron and titanium content by color-changing acid photometry and diantipyrine methane photometry: The purpose is to measure the titanium content in ferroniobium
Quantification, using color-changing acid photometry and diantipyrine methane photometry:
---Chemical analysis method of ferroniobium: Determination of tungsten content by thiocyanate photometry: The purpose is to measure the tungsten content in ferroniobium, using thiocyanate
Halophotometry:
Determination of ferroniobium titanium content chromotropic acid
Photometry and diantipyrine methane photometry
Warning---Personnel using this document should have regular laboratory work experience: This document does not address all possible security issues
question: Users are responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in relevant national regulations:
1 Scope
This document specifies the determination of titanium content in ferroniobium using the photochromic acid photometric method and the diantipyrine methane photometric method:
This document is applicable to the determination of titanium content in ferroniobium: The determination range (mass fraction) is: 0:010%~2:50%:
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/T 4010 Collection and preparation of samples for chemical analysis of iron alloys
GB/T 6379:1 Accuracy of measurement methods and results (correctness and precision) Part 1: General principles and definitions
GB/T 6379:2 Accuracy of measurement methods and results (correctness and precision) Part 2: Determination of repeatability of standard measurement methods
Basic methods of sex and reproducibility
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 7729 General rules for chemical analysis of metallurgical products by spectrophotometry
GB/T 8170 Numerical rounding rules and expression and determination of limit values
GB/T 12806 Laboratory glassware single-marked volumetric flasks
GB/T 12807 Graduated pipettes for laboratory glass instruments
GB/T 12808 Single-marked pipette for laboratory glass instruments
3 Terms and definitions
There are no terms or definitions to be defined in this document:
4 Method 1: Color-changing acid photometry
4:1 Principle
The sample is decomposed with hydrofluoric acid and nitric acid, and sulfuric acid fumes are emitted: In the oxalic acid solution, the color-changing acid and titanium form a red complex, which glows at a wavelength of 475nm:
Measure its absorbance:
4:2 Reagents and materials
Unless otherwise stated, only approved analytical grade reagents and grade 3 or above distilled water or deionized water that meets the requirements of GB/T 6682 are used in the analysis:
Ionized water or water of equivalent purity:
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