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GB/T 4325.2-2013: Methods for chemical analysis of molybdenum -- Part 2: Determination of cadmium content -- Flame atomic absorption spectrometry
Status: Valid GB/T 4325.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4325.2-2013 | English | 169 |
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Methods for chemical analysis of molybdenum -- Part 2: Determination of cadmium content -- Flame atomic absorption spectrometry
| Valid |
GB/T 4325.2-2013
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| GB/T 4325.2-1984 | English | 199 |
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Methods for chemical analysis of molybdenum--The potassium iodide-brucine photometric method for the determination of bismuth content
| Obsolete |
GB/T 4325.2-1984
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PDF similar to GB/T 4325.2-2013
Basic data | Standard ID | GB/T 4325.2-2013 (GB/T4325.2-2013) | | Description (Translated English) | Methods for chemical analysis of molybdenum -- Part 2: Determination of cadmium 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| H63 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 7,738 | | Older Standard (superseded by this standard) | GB/T 4325.1-1984 Partial | | Regulation (derived from) | National Standards Bulletin 2013 No. 6 | | Issuing agency(ies) | General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 method for determination of cadmium molybdenum. This section applies to molybdenum powder, molybdenum, molybdenum trioxide, ammonium cadmium content. Measuring range, 0. 000 2% ~ 0. l00%. | GB/T 4325.2-2013: Methods for chemical analysis of molybdenum -- Part 2: Determination of cadmium content -- Flame atomic absorption spectrometry
---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.
Methods for chemical analysis of molybdenum Part 2.. Determination of cadmium content Flame atomic absorption spectrometry.
ICS 77.120.99
H63
National Standards of People's Republic of China
Replacing GB/T 4325.1-1984
Chemical analysis of molybdenum
Part 2. Determination of cadmium content
Flame Atomic Absorption Spectrometry
Part 2. Determinationofcadmiumcontent-
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 24325 Part of.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB/T 4325.1-1984 "chemical analysis of molybdenum square wave polarography determination of lead and cadmium content," Measurement of the amount of cadmium
set. This section compared with the GB/T 4325.1-1984, the main technical changes are as follows.
--- By flame atomic absorption spectrometry replaced the square wave polarography Determination of cadmium content;
--- 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 Mining Research Institute, Guangzhou Nonferrous Metal Research Institute.
The main drafters of this section. Zhao Yu, Chen Qiufang, Zhangjiang Feng, Wang Guoliang, He Xin, Yu Li, Wang Jin.
This part of the standard replaces the previous editions are.
--- GB/T 4325.1-1984.
Chemical analysis of molybdenum
Part 2. Determination of cadmium content
Flame Atomic Absorption Spectrometry
1 Scope
GB/T 4325 This section specifies the method for determination of molybdenum cadmium.
This section applies to molybdenum powder, molybdenum, molybdenum trioxide, ammonium molybdate Determination of cadmium content. Measurement range. 0.0002% to 0.100%.
2 Method summary
Sample was dissolved hydrogen peroxide. In nitric acid medium, the absorbance spectra measured at a wavelength of cadmium by flame atomic absorption at 228.8nm,
Computing element content. Join molybdenum substrate offset the impact of molybdenum.
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 molybdenum trioxide, pure spectrum.
3.4 molybdate, pure spectrum.
3.5 cadmium standard stock solution. Weigh 0.1000g metal cadmium (wCd≥99.9%), placed in 250mL beaker, add 20mL of nitric acid
(11) dissolved and transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 100μg cadmium.
3.6 Cadmium standard solution. Pipette 10.00mL cadmium standard stock solution (3.5) in 100mL flask, add 1mL of nitric acid (3.2), with
Dilute with water to volume, and mix. This solution 1mL containing 10μg cadmium.
4 Instrument
Atomic absorption spectrometer instrument, with a cadmium hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- Characteristic concentration. the test solution and measurement matrix consistent solution, characteristic concentration of cadmium should not exceed 0.020mg/L;
--- 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
The average absorbance of standard solution of 0.5%;
--- Linear curve. the curve at a concentration divided into three segments, segment absorbance higher than the low segment of the absorbance difference, not less than
0.7.
5 Sample
Molybdenum should smash through the 0.75mm standard sieve.
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