GB/T 13747.25-2017 English PDF

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GB/T 13747.25-2017: Methods for chemical analysis of zirconium and zirconium alloys -- Part 25: Determination of niobium content - 2- (5-bromo-2-pyridylazo) -5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 13747.25-2017	199	Add to Cart	3 days	Methods for chemical analysis of zirconium and zirconium alloys -- Part 25: Determination of niobium content - 2- (5-bromo-2-pyridylazo) -5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission spectrometry	Valid

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Basic data

Standard ID: GB/T 13747.25-2017 (GB/T13747.25-2017)
Description (Translated English): Methods for chemical analysis of zirconium and zirconium alloys -- Part 25: Determination of niobium content - 2- (5-bromo-2-pyridylazo) -5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H63
Classification of International Standard: 77.120.99
Word Count Estimation: 10,160
Date of Issue: 2017-09-29
Date of Implementation: 2018-04-01
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

GB/T 13747.25-2017: Methods for chemical analysis of zirconium and zirconium alloys -- Part 25: Determination of niobium content - 2- (5-bromo-2-pyridylazo) -5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission 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 zirconium and zirconium alloys - Part 25. Determination of niobium content - 2- (5-bromo-2-pyridylazo) -5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission spectrometry ICS 77.120.99 H63 National Standards of People's Republic of China Methods for chemical analysis of zirconium and zirconium alloys Part 25. Determination of niobium content 5-Br-PADAP spectrophotometry and inductive coupling Plasma atomic emission spectrometry Methods for chemical analysis of zirconiumiumandzirconiumaloys- Part 25.Determinationofniobiumcontent- 2- (5-bromo-2-pyridylazo) -5-diethylaminophenolspectrophotometryand 2017-09-29 Release.2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 13747 "zirconium and zirconium alloy chemical analysis method" is divided into 27 parts. --- Part 1. Determination of tin content potassium iodate titration and phenylfluorone - polyethylene glycol octyl phenyl ether spectrophotometry; --- Part 2. Determination of iron content 1,10-phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 3. Determination of nickel content dimethylglyoxime spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 4. Determination of chromium content Diphenylcarbazide spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 5. Determination of aluminum content chrome azure S-tetradecyl pyridine chloride spectrophotometry; --- Part 6. Determination of copper content 2,9-dimethyl-1,10-phenanthroline spectrophotometry; --- Part 7. Determination of manganese content potassium periodate spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 8. Determination of cobalt content Nitroso R salt spectrophotometry; --- Part 9. Determination of magnesium content by flame atomic absorption spectrometry; --- Part 10. Determination of tungsten content thiocyanate spectrophotometry; --- Part 11. Determination of molybdenum content thiocyanate spectrophotometry; --- Part 12. Determination of silicon content Molybdenum blue spectrophotometry; --- Part 13. Determination of lead content polarographic method; --- Part 14. Determination of uranium volume Polarographic method; --- Part 15. Determination of boron content curcumin spectrophotometry; --- Part 16. Determination of chlorine content of silver chloride turbidity and ion selective electrode method; --- Part 17. Determination of cadmium content Polarographic method; --- Part 18. Determination of vanadium content; Benzoylphenylhydroxylamine spectrophotometry; --- Part 19. Determination of titanium content diantipyryl methane spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 20. Determination of hafnium content Inductively coupled plasma atomic emission spectrometry; --- Part 21. Determination of hydrogen content inert gas melting infrared absorption method/thermal conductivity method; Part 22 - Determination of oxygen and nitrogen content - Inert gas fusion infrared absorption method/Thermal conductivity method; --- Part 23. Determination of nitrogen content Distillation separation - Nessler reagent spectrophotometry; --- Part 24. Determination of carbon content High-frequency combustion infrared absorption method; --- Part 25. Determination of niobium content 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 26. Determination of alloying and impurity elements; Inductively coupled plasma atomic emission spectrometry; --- Part 27. Determination of trace impurity elements Inductively coupled plasma mass spectrometry. This section GB/T 13747 Part 25. This section drafted in accordance with GB/T 1.1-2009 given rules. This part is proposed by China Nonferrous Metal Industry Association. This part of the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized. This part of the drafting unit. Western Metal Materials Co., Ltd., Northwest Nonferrous Metal Research Institute, GB (Beijing) Inspection and Certification Co., Ltd. Secretary, Bao Titanium Group Co., Ltd., Guangdong Province, industrial analysis and testing center, the new Western zirconium core materials Technology Co., Ltd. The main drafters of this section. Li Xun, Yang Junhong, Li Juan, Yang Ping, Pauline, Li Tian, Hou Chuan, Lei Xiaoyan, Bai Huanhuan, Zhang Ti Jiao, Wang Jin, Huibin Ning. Methods for chemical analysis of zirconium and zirconium alloys Part 25. Determination of niobium content 5-Br-PADAP spectrophotometry and inductive coupling Plasma atomic emission spectrometry

1 Scope

This section GB/T 13747 specifies the determination of zirconium and zirconium alloy niobium content. This section applies to sponge zirconium, zirconium and zirconium alloy niobium content determination. Method A determination of the range of 0.20% to 3.00%; Setting range .0.050% ~ 3.00%. Method two is the method of arbitration analysis. 2 Method A 5-Br-PADAP spectrophotometry 2.1 Method summary The sample was dissolved with sulfuric acid and ammonium sulfate. In the presence of tartaric acid and EDTA, niobium and 5-Br-PADAP were colored in an acidic medium Complex, absorbance was measured at a spectrophotometer wavelength of 610 nm. 2.2 Reagents Unless otherwise noted, only reagents identified as superior pure and laboratory grade II water were used in the analysis. 2.2.1 Ammonium sulfate. 2.2.2 Sulfuric acid (ρ = 1.84 g/mL). 2.2.3 tartaric acid solution (240g/L). 2.2.4 tartaric acid solution (60g/L). 2.2.5 ammonia (1 1). 2.2.6 Sulfuric acid (1 19). 2.2.7 Disodium ethylenediaminetetraacetate (EDTA) solution (20g/L). 2.2.8 5-Br-PADAP [2- (5-Br-2-pyridylazo) -5-diethylaminophenol] ethanol solution (0.3 g/L). 2.2.9 Zirconium base solution Weigh 0.10g of metal zirconium (wZr ≥ 99.95%) in a 100mL beaker, add 1.0g ammonium sulfate (2.2.1) 2.0mL sulfuric acid (2.2.2), heated to dissolve, cooled, transferred to.200mL volumetric flask, cooled to room temperature, diluted with water to the mark, and mix. This solution 1 mL contains 0.5 mg zirconium. 2.2.10 Niobium standard stock solution Weigh 0.7153g niobium pentoxide (wNb205 ≥ 99.95%) in a platinum crucible, add 10g pyrosulfuric acid Potassium was heated and melted on a torch to dissolve completely, cooled, leached with a hot tartaric acid solution (100 g/L), placed in a 500 mL beaker, With constant stirring, the solution was clarified by heating, cooled, transferred to a 500 mL volumetric flask and diluted with tartaric acid solution (100 g/L) to the mark uniform. 1 mL of this solution contains 1.0 mg of niobium. 2.2.11 niobium standard solution Pipette 10.00mL niobium standard stock solution (2.2.10) in 1000mL volumetric flask to tartaric acid solution (2.2.4) diluted to the mark, mix well. 1 mL of this solution contains 10 μg of niobium. 2.2.12 p-nitrophenol solution (1g/L). ......

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