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GB/T 4325.20-2013: Methods for chemical analysis of molybdenum -- Part 20: Determination of manganese content -- Flame atomic absorption spectrometry
Status: Valid GB/T 4325.20: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4325.20-2013 | English | 169 |
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Methods for chemical analysis of molybdenum -- Part 20: Determination of manganese content -- Flame atomic absorption spectrometry
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GB/T 4325.20-2013
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| GB/T 4325.20-1984 | English | 199 |
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Methods for chemical analysis of molybdenum--The N-benzoyl-N-phenylhydroxylamine photometric method for the determination of vanadium content
| Obsolete |
GB/T 4325.20-1984
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Basic data | Standard ID | GB/T 4325.20-2013 (GB/T4325.20-2013) | | Description (Translated English) | Methods for chemical analysis of molybdenum -- Part 20: Determination of manganese content -- Flame atomic absorption spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H63 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 7,736 | | Older Standard (superseded by this standard) | GB/T 4325.22-1984 | | Regulation (derived from) | National Standards Bulletin 2013 No. 6 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the amount of manganese molybdenum determination. This section applies to molybdenum powder, molybdenum, pure molybdenum trioxide, ammonium molybdate manganese content. Measuring range: 0. 0002% to 0. 100 % | GB/T 4325.20-2013: Methods for chemical analysis of molybdenum -- Part 20: Determination of manganese content -- Flame atomic absorption spectrometry
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Methods for chemical analysis of molybdenum Part 20. Determination of manganese content Flame atomic absorption spectrometry.
ICS 77.120.99
H63
National Standards of People's Republic of China
Replacing GB/T 4325.22-1984
Chemical analysis of molybdenum
Part 20. Determination of the amount of manganese
Flame Atomic Absorption Spectrometry
Part 20. Determinationofmanganesecontent-
Issued on. 2013-05-09
2014-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 4325 "chemical analysis of molybdenum" is divided into 26 parts.
--- Part 1. Determination of lead content - Graphite furnace atomic absorption spectrometry;
--- Part 2. Determination of cadmium content by flame atomic absorption spectrometry;
--- Part 3. Determination of bismuth content - atomic fluorescence spectrometry;
--- Part 4. Determination of tin content by atomic fluorescence spectrometry;
--- Part 5. Determination of antimony content - Atomic Fluorescence Spectrometry;
--- Part 6. Determination of arsenic content by atomic fluorescence spectrometry;
--- Part 7. Determination of the amount of iron phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 8. Determination of cobalt content of cobalt reagents spectrophotometry and flame atomic absorption spectrometry;
--- Part 9. Determination of the amount of nickel dimethylglyoxime spectrophotometric method and the flame atomic absorption spectrometry;
--- Part 10. Determination of copper content - Flame atomic absorption spectrometry;
--- Part 11. Determination of aluminum content of chromium azure S spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 12. silicon content - Inductively coupled plasma atomic emission spectrometry;
--- Part 13. Determination of calcium content by flame atomic absorption spectrometry;
--- Part 14. Determination of magnesium content - Flame atomic absorption spectrometry;
--- Part 15. Determination of sodium content by flame atomic absorption spectrometry;
--- Part 16. Determination of potassium content by flame atomic absorption spectrometry;
--- Part 17. Determination of titanium content of two methane antipyrine spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 18. Determination of the amount of vanadium tantalum reagent spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 19. Determination of chromium content of diphenyl carbon acid dihydrazide spectrophotometry;
--- Part 20. Determination of manganese content by flame atomic absorption spectrometry;
--- Part 21. Determination of the amount of carbon and sulfur content of the high-frequency combustion infrared absorption method;
--- Part 22. Determination of phosphorus content - Molybdenum blue spectrophotometric method;
--- Part 23. Determination of the oxygen and nitrogen inert gas fusion infrared absorption method - thermal conductivity method;
--- Part 24. Determination of tungsten content - Inductively coupled plasma atomic emission spectrometry;
--- Part 25. Determination of the amount of hydrogen in the inert gas fusion infrared absorption method/thermal conductivity method;
--- Part 26. aluminum, magnesium, calcium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, cadmium, tin, antimony, tungsten, lead and bismuth content - Inductively coupled
Co-Plasma Mass Spectrometry.
This section GB/T Part of 204,325.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB/T 4325.22-1984 "for Determination of the amount of chemical analysis of molybdenum oxime." This portion
GB/T 4325.22-1984 compared to the main technical changes are as follows.
--- The "oxime spectrophotometric determination" to "flame atomic absorption spectrometry";
--- Measurement range was adjusted to 0.0002% to 0.100%;
--- Increased repeatability terms.
--- Increasing the test report.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is drafted. Jinduicheng Molybdenum Industry Co., Ltd., Beijing Nonferrous Metal Research Institute, Western Metal Materials Co., Ltd.
The main drafters of this section. Section Hu Geng, Yang Li, Zhangjiang Feng, Wang Guoliang, He Xin, Li Man Chi, Zhao Fei.
This part of the standard replaces the previous editions are.
--- GB/T 4325.22-1984.
Chemical analysis of molybdenum
Part 20. Determination of the amount of manganese
Flame Atomic Absorption Spectrometry
1 Scope
GB/T 4325 provisions of this part of the determination of molybdenum and manganese contents.
This section applies to molybdenum powder, molybdenum, pure molybdenum trioxide, ammonium molybdate determination of manganese content. Measurement range. 0.0002% to 0.100%.
2 Method summary
Sample to hydrogen peroxide, nitric acid or nitric acid, hydrochloric acid decomposition. Respectively, in dilute nitric acid or hydrochloric acid medium, atomic absorption spectrometer wavelength
279.5nm at the air - acetylene flame measured absorbance.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 Hydrogen peroxide (ρ = 1.10g/mL).
3.2 nitric acid (ρ = 1.42g/mL), pure class distinctions.
3.3 sulfuric acid (119), pure class distinctions.
3.4 molybdenum substrate. the nature of the sample matrix should be the same, and was non-tested elements, or content is minimal.
3.5 manganese standard stock solution. Weigh 0.1000g of manganese metal (wMn≥99.9%) in 250mL beaker, add 100mL sulfuric acid
(3.3), low heat to dissolve completely. Remove to cool to room temperature and transferred to 1L volumetric flask, dilute with water to volume, and mix. This solution 1mL
Containing 100μg manganese.
3.6 Manganese standard solution. Pipette 10.00mL manganese standard stock solution (3.5) in 100mL volumetric flask, dilute with water to volume, and mix.
This solution 1mL containing 10μg manganese.
4 Instrument
Atomic absorption spectrometer, with a manganese hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- Characteristic concentration. the test solution consistent with the determination of the base solution, the characteristic concentration of manganese should not exceed 0.02μg/mL.
--- Precision. measure up to 10 times the standard solution, the absorbance of the standard deviation should not exceed 1.5% of the average absorbance; the lowest
Concentration of standard solution (not "zero" concentration of the standard) measuring the absorbance of 10 times, the standard deviation should not exceed the maximum concentration standard
0.5% average standard solution absorbance.
--- Linear curve. The curve is divided into five sections according to concentration, absorbance difference between the absorbance difference between the highest and the lowest segment of the segment
Ratio of not less than 0.7.
5 Sample
Molybdenum should smash through the 0.75mm standard sieve.
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