GB/T 4325.3-2013 English PDF

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GB/T 4325.3-2013: Methods for chemical analysis of molybdenum -- Part 3: Determination of bismuth content -- Atomic fluorescence spectrometry
Status: Valid

GB/T 4325.3: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4325.3-2013	189	Add to Cart	3 days	Methods for chemical analysis of molybdenum -- Part 3: Determination of bismuth content -- Atomic fluorescence spectrometry	Valid
GB/T 4325.3-1984	199	Add to Cart	2 days	Methods for chemical analysis of molybdenum--The polyethylene glycol octyl phenyl ether-phenyl fluorine photometric method for the determination of tin content	Obsolete

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Basic data

Standard ID: GB/T 4325.3-2013 (GB/T4325.3-2013)
Description (Translated English): Methods for chemical analysis of molybdenum -- Part 3: Determination of bismuth content -- Atomic fluorescence spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H63
Classification of International Standard: 77.120.99
Word Count Estimation: 8,887
Older Standard (superseded by this standard): GB/T 4325.2-1984
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 bismuth molybdenum determination. This section applies to molybdenum powder, molybdenum, molybdenum trioxide, ammonium bismuth content. Measuring range: 0. 0001% to 0. 0050%.

GB/T 4325.3-2013: Methods for chemical analysis of molybdenum -- Part 3: Determination of bismuth content -- Atomic fluorescence 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 3... Determination of bismuth content Atomic fluorescence spectrometry ICS 77.120.99 H63 National Standards of People's Republic of China Replacing GB/T 4325.2-1984 Chemical analysis of molybdenum Part 3. Determination of bismuth content Atomic Fluorescence Spectrometry Part 3. Determinationofbismuthcontent- 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 34325 Part of. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 4325.2-1984 "chemical analysis of molybdenum potassium iodide - brucine photometric method for determination of bismuth content." This section Compared with GB/T 4325.2-1984, the main technical changes are as follows. --- Potassium iodide - brucine photometric method to atomic fluorescence spectrometry; --- Measurement range was adjusted to 0.0001% to 0.0050%; --- Increased repeatability terms; --- Increasing the test report clause. 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, Beijing Nonferrous Metal Research Institute. The main drafters of this section. Xie Mingming, Wang Feng, Wang Guoliang, Zhangjiang Feng, Dian Chen Geng, Zhang Diankai, Wang Haoying. This part of the standard replaces the previous editions are. --- GB/T 4325.2-1984. Chemical analysis of molybdenum Part 3. Determination of bismuth content Atomic Fluorescence Spectrometry

1 Scope

GB/T 4325 This section specifies the method for determination of molybdenum bismuth content. This section applies to molybdenum powder, molybdenum, molybdenum trioxide, ammonium molybdate determination of bismuth content. Measurement range. 0.0001% to 0.0050%.

2 Method summary

Sample of nitric acid, hydrochloric acid decomposition. In hydrochloric acid medium to form a hydride with sodium borohydride and the role of bismuth, the import hydride atomizer, In hollow cathode lamp as the light source, the fluorescence intensity of bismuth at the atomic fluorescence spectrometer, within a certain range, and fluorescence intensity measured element Proportional to the content. Join molybdenum substrate can eliminate interference.

3 Reagents

Unless otherwise indicated, the reagents used in this section are excellent pure, the water is two or more than two water water. 3.1 of sodium borohydride. 3.2 sodium hydroxide. 3.3 nitric acid (ρ = 1.42g/mL). 3.4 hydrochloric acid (ρ = 1.19g/mL). 3.5 hydrochloride (19). 3.6 nitric acid (11). 3.7 ammonia (199). 3.8 Ammonia (2mol/L). 3.9 bismuth standard stock solution. Weigh 0.1000g bismuth (wBi≥99.99%) in 250mL beaker, add 100mL nitric acid (3.6), dissolved by heating, oxides of nitrogen purge after boiling, cooled and transferred to 1000mL volumetric flask, dilute to groove. This solution 1mL Bismuth-containing 100μg. 3.10 Bismuth standard solution. Pipette 1.00mL standard bismuth stock solution (3.9) in 100mL volumetric flask, was added 10mL of hydrochloric acid (3.4), Dilute with water to volume, and mix. This solution 1mL containing 1μg bismuth. 3.11 a solution of sodium borohydride (15g/L). Weigh 1.5g of sodium borohydride was added 0.5g of sodium hydroxide previously dissolved in 100mL water, after After the dissolution of the whole shake up, the time is now equipped with. 3.12 molybdenum substrate solution. Weigh 7.4977g pure molybdenum in 100mL beaker, 100mL added ammonia (3.8), low-temperature heating Dissolved and then diluted with aqueous ammonia (3.7) to 100mL, shake well and set aside. This solution 1mL containing 50mg molybdenum. 3.13 argon, the volume fraction of not less than 99.99%.

4 Instrument

Atomic fluorescence spectrometer, with bismuth special hollow cathode lamp. ......

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