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Manganese ores - Determination of sodium and potassium content - Flame atomic absorption spectrometric method
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| GB/T 14949.7-1994 | English | 239 |
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Manganese ores. Determination of sodium and potassium contents
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Basic data
| Standard ID | GB/T 14949.7-2024 (GB/T14949.7-2024) |
| Description (Translated English) | Manganese ores - Determination of sodium and potassium content - Flame atomic absorption spectrometric method |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | D32 |
| Classification of International Standard | 73.060.20 |
| Word Count Estimation | 18,196 |
| Date of Issue | 2024-04-25 |
| Date of Implementation | 2024-11-01 |
| Older Standard (superseded by this standard) | GB/T 14949.7-1994 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 14949.7-2024: Manganese ores - Determination of sodium and potassium content - Flame atomic absorption spectrometric 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 73:060:20
CCSD32
National Standards of People's Republic of China
Replaces GB/T 14949:7-1994
Determination of sodium and potassium content in manganese ore
Flame Atomic Absorption Spectrometry
Released on 2024-04-25
2024-11-01 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:
This document is Part 7 of GB/T 14949: GB/T 14949 has published the following parts:
--- Chemical analysis methods for manganese ores - Determination of chromium content;
--- Determination of nickel content in manganese ore - Flame atomic absorption spectrometry;
--- Methods for chemical analysis of manganese ores - Determination of barium oxide content;
--- Chemical analysis methods for manganese ores - Determination of vanadium content;
--- Determination of titanium content in manganese ore - Diantipyryl methane spectrophotometric method;
--- Determination of copper, lead and zinc content in manganese ore - Flame atomic absorption spectrometry;
--- Determination of sodium and potassium content of manganese ore-Flame atomic absorption spectrometry;
--- Gravimetric method for determination of wet water content of manganese ore;
--- Chemical analysis methods for manganese ores - Determination of sulfur content;
--- Chemical analysis methods for manganese ores - Determination of cobalt content;
--- Determination of carbon content in manganese ore by gravimetric method and infrared absorption method;
--- Gravimetric method for determination of combined water content of manganese ores:
This document replaces GB/T 14949:7-1994 "Chemical analysis methods for manganese ores - Determination of sodium and potassium content" and is compatible with GB/T 14949:7-
Compared with:1994, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) The density of hydrofluoric acid has been changed (see 5:5, 3:5 of the:1994 edition);
b) Added analytical balance (see 6:2);
c) The requirements for atomic absorption spectrometers have been changed (see 6:3, 4:2 of the:1994 edition);
d) Added the requirement for the number of measurements (see 8:2);
e) The blank test requirements have been changed (see 8:3, 6:2 of the:1994 edition);
f) The preparation of the test solution has been changed (see 8:4:3, 6:3:3 of the:1994 edition);
g) The method of drawing the calibration curve has been changed (see 8:5, 6:4 of the:1994 edition);
h) Added the determination and expression of analysis results (see 9:2);
i) The precision has been changed (see Chapter 10, Chapter 8 of the:1994 edition);
j) Added the content of the test report (see Chapter 11);
k) Added the test result acceptance flow chart (see Appendix C):
This document is modified to adopt ISO 7969:1985 "Manganese ores and concentrates - Determination of sodium and potassium contents - Flame atomic absorption spectrometric method":
Compared with ISO 7969:1985, this document has many structural adjustments:
See Appendix A:
This document has more technical differences than ISO 7969:1985:
These technical differences and their causes are listed in Appendix B:
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 Iron and Steel Association:
This document is under the jurisdiction of the National Technical Committee for Standardization of Pig Iron and Ferroalloys (SAC/TC318):
This document was drafted by: Zhanjiang Customs Technical Center, China Certification and Inspection Group Guangdong Co:, Ltd: Zhanjiang Branch, Qingdao Bozheng Inspection
Technology Co:, Ltd:, Shanghai Customs Industrial Products and Raw Materials Testing Technology Center, Qingdao Customs Technology Center, Ningbo City Vocational and Technical College, Hubei
Erdos Xijin Mining and Metallurgy Co:, Ltd:, Jitie Ferroalloy Co:, Ltd:, and Metallurgical Industry Information Standards Research Institute:
The main drafters of this document are: Tian Qiong, Yang Shujie, Xu Jie, Xu Cui, Ye Jinyan, Xu Jinlong, Hong Wuxing, Cao Yue, Liu Shu, Guan Song, Ma Ning,
Liu, Bing, Fan, Yu, Lu, Chunsheng, and Liu, Yanting:
This document was first published in:1994 and this is the first revision:
Introduction
Since there are many detection elements involved in the manganese ore detection process, the applicable scope and application methods of the elements are different:
To ensure the convenience and accuracy of manganese ore testing standards, we have established a supporting system for manganese ore testing based on the analysis methods of different elements in manganese ore:
National standard system: GB/T 14949 Manganese ore series analysis method is the basic standard for manganese ore detection in my country, and is intended to consist of the following parts:
--- Part 1: Chemical analysis method for manganese ores - Determination of chromium content: The purpose is to measure the chromium content in manganese ores using diphenylcarbon
Acyl dihydrazide photometry and silver persulfate titration:
--- Part 2: Determination of nickel content in manganese ore - Flame atomic absorption spectrometry: The purpose is to measure the nickel content in manganese ore:
Flame atomic absorption spectrometry was used:
--- Part 3: Chemical analysis methods for manganese ores - Determination of barium oxide content: The purpose is to measure the barium oxide content in manganese ores:
Use barium sulfate weight method:
--- Part 4: Chemical analysis method for manganese ores - Determination of vanadium content: The purpose is to measure the vanadium content in manganese ores using phosphorus tungsten vanadium
Acid photometry:
--- Part 5: Determination of titanium content in manganese ore - Diantipyrine methane spectrophotometric method:
Titanium content was determined by diantipyrinyl methane spectrophotometry:
--- Part 6: Determination of copper, lead and zinc content in manganese ore - Flame atomic absorption spectrometry:
Copper, lead and zinc contents were determined by flame atomic absorption spectrometry:
--- Part 7: Determination of sodium and potassium content of manganese ore by flame atomic absorption spectrometry: The purpose is to measure the sodium content of manganese ore:
and potassium content by flame atomic absorption spectrometry:
--- Part 8: Determination of wet water content of manganese ore by gravimetric method: The purpose is to measure the sodium wet water content in manganese ore by gravimetric method:
Measurement method:
--- Part 9: Chemical analysis methods for manganese ores - Determination of sulfur content: The purpose is to measure the sulfur content in manganese ores using barium sulfate
Gravimetric method and combustion iodine titration:
--- Part 10: Chemical analysis method for manganese ores - Determination of cobalt content: The purpose is to measure the cobalt content in manganese ores using nitrite
Base R salt photometry:
--- Part 11: Determination of carbon content in manganese ore - Gravimetric method and infrared absorption method:
The gravimetric method and infrared absorption method were used:
--- Part 12: Determination of the combined water content of manganese ores by gravimetric method:
Use weight method:
Determination of sodium and potassium content in manganese ore
Flame Atomic Absorption Spectrometry
Warning---People who use this document should have practical experience in formal laboratory work: This document does not address all possible safety issues:
The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in relevant national laws and regulations:
1 Scope
This document specifies the method for the determination of sodium and potassium in manganese ores by flame atomic absorption spectrometry:
This document is applicable to the determination of sodium and potassium content in manganese ore: The determination range of sodium (mass fraction): 0:02%~0:90%; the determination range of potassium
Fixed range (mass fraction): 0:05%~3:00%:
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 to
This document:
GB/T 2011 Sampling and sample preparation methods for bulk manganese ore
GB/T 6379:1 Accuracy (trueness and precision) of measurement methods and results Part 1: General principles and definitions
GB/T 6379:2 Accuracy (trueness and precision) of measurement methods and results 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 7728 General rules for chemical analysis of metallurgical products by flame atomic absorption spectrometry
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 14949:8 Determination of wet water content of manganese ore - Gravimetric method
3 Terms and definitions
There are no terms or definitions that require definition in this document:
4 Principle
The sample is dissolved with nitric acid, hydrofluoric acid and sulfuric acid (the insoluble sample is dissolved with hydrochloric acid, nitric acid, hydrofluoric acid and perchloric acid), and the test solution is fixed to volume and then sprayed into
In the air-acetylene flame, sodium and potassium hollow cathode lamps were used as light sources, respectively, and the atomic absorption spectrometer was used at wavelengths of 589:0nm and 766:5nm:
Measure the absorbance of sodium and potassium: In order to eliminate the influence of matrix elements, when drawing the calibration curve, add manganese and iron in an amount similar to that of the sample:
5 Reagents
Unless otherwise specified, only approved high-purity reagents and grade 2 or higher distilled water or other distilled water that complies with GB/T 6682 or above were used in the analysis:
Water of comparable purity:
5:1 Hydrochloric acid, ρ=1:19 g/mL:
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