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GB/T 15076.12-2008: Methods for chemical analysis of tantalum and niobium -- Determination of phosphorus content in tantalum
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| GB/T 15076.12-2008 | English | 139 |
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Methods for chemical analysis of tantalum and niobium -- Determination of phosphorus content in tantalum
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GB/T 15076.12-2008
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| GB/T 15076.12-1994 | English | 199 |
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Methods for chemical analysis of tantalum and niobium-Determination of carbon content
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GB/T 15076.12-1994
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Basic data | Standard ID | GB/T 15076.12-2008 (GB/T15076.12-2008) | | Description (Translated English) | Methods for chemical analysis of tantalum and niobium -- Determination of phosphorus content in tantalum | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 6,692 | | Date of Issue | 2008-03-31 | | Date of Implementation | 2008-09-01 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.5 (Total No.118) | | 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 phosphorus content of tantalum. This section applies to the determination of tantalum phosphorus content. Measurement range: 0. 0010% to 0. 020%. | GB/T 15076.12-2008: Methods for chemical analysis of tantalum and niobium -- Determination of phosphorus content in tantalum
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Methods for chemical analysis of tantalum and niobium. Determination of phosphorus content in tantalum
ICS 77.120.99
H14
National Standards of People's Republic of China
Methods for chemical analysis of tantalum and niobium
Determination of the amount of phosphorus in tantalum
Posted 2008-03-31
2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 15076 "Methods for chemical analysis of tantalum and niobium" is divided into 16 parts.
--- GB/T 15076.1 Methods for chemical analysis of tantalum and niobium, tantalum and niobium - Determination of the amount of
--- Determination of GB/T 15076.2 Methods for chemical analysis of tantalum and niobium and tantalum niobium content
--- Determination of GB/T 15076.3 chemical analysis of tantalum and niobium copper content
--- Determination of GB/T 15076.4 chemical analysis of tantalum and niobium iron content
--- GB T 15076.5 Methods for chemical analysis of molybdenum, tantalum, niobium and tungsten contents - /
Determination --- GB/T 15076.6 chemical analysis of tantalum and niobium and tantalum silicon content
--- GB/T 15076.7 chemical analysis of tantalum and niobium and niobium determination of phosphorus content
Determination --- GB/T 15076.8 Methods for chemical analysis of tantalum and niobium carbon and sulfur content
--- Determination of GB/T 15076.9 chemical analysis of tantalum and niobium and tantalum iron, chromium, nickel, manganese, titanium, aluminum, copper, tin, lead and zirconium quantity
--- Determination of GB/T 15076.10 chemical analysis of tantalum and niobium and niobium iron, nickel, chromium, titanium, zirconium, aluminum and manganese contents
--- GB/T 15076.11 chemical analysis of tantalum and niobium and niobium arsenic, antimony, lead, tin and bismuth contents
--- Determination of GB/T 15076.12 chemical analysis of tantalum and niobium and tantalum of phosphorus content
Determination --- GB/T 15076.13 chemical analysis of tantalum and niobium tantalum nitrogen content
--- Determination of GB/T 15076.14 chemical analysis of tantalum and niobium for oxygen
Determination --- GB/T 15076.15 chemical analysis of tantalum and niobium amount of hydrogen
--- Determination of GB/T 15076.16 Methods for chemical analysis of tantalum and niobium amount of sodium and potassium contents of
This is Part 12.
This part is proposed by the China Nonferrous Metals Industry Association.
The non-ferrous metal part by the National Standardization Technical Committee.
Ningxia Orient Tantalum Industry Co., Ltd. in this section by the China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting.
This part by the Northwest Rare Metal Material Research Institute and Conghua Tantalum-Niobium smelter participate in the drafting.
The main drafters of this section. Zhang Weijie, Yang Liming, Zhang Liangyu, Zhang Ji Yuan, Leung Wing-tai.
This part certifier. Yang Yuqiong, double yellow.
This section first release.
Methods for chemical analysis of tantalum and niobium
Determination of the amount of phosphorus in tantalum
1 Scope
This section provides the determination of phosphorus in tantalum.
This section applies to the determination of phosphorus content of the tantalum. Measurement range. 0.0010% to 0.020%.
2 principle of the method
Samples were dissolved with nitric acid and hydrofluoric acid, potassium permanganate oxidation of the positive pentavalent phosphorus in 1mol/L HNO3 medium was added ammonium molybdate solution
Liquid form phosphomolybdic yellow, isolated by extraction with ethyl acetate and the body, with stannous chloride to restore phosphorus molybdenum blue at 620nm wavelength spectrophotometer
Measured absorbance.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or equivalent purity.
3.1 nitrate (ρ1.42g/mL), pure class distinctions.
3.2 nitric acid solution (14 + 1).
3.3 Hydrofluoric acid (ρ1.14g/mL), MOS level.
3.4 hydrochloric acid (ρ1.18g/mL), pure class distinctions.
3.5 ethyl acetate.
3.6 potassium permanganate solution (40g/L), pure class distinctions.
3.7 sodium nitrite solution (50g/L).
3.8 ammonium molybdate solution (100g/L), high purity.
3.9 stannous chloride solution (20g/L). Weigh 2.38g of stannous chloride (SnCl2 · 2H2O), heating 34mL hydrochloric acid (3.4) dissolved in
Diluted with water to 100mL, shake.
3.10 P standard stock solution. Weigh 0.4394g pre-bake at 105 ℃ 1h placed in the dryer and cooled to room temperature, potassium dihydrogen phosphate
(Reference Reagent) into 200mL beaker, add 50mL dissolved in water and transferred to 500mL volumetric flask, dilute with water to volume, and mix. this
1mL solution containing 200μg phosphorus.
3.11 Phosphorus standard solution. Pipette 10.00mL phosphate standard stock solution (3.10) in 200mL volumetric flask, dilute to volume with water and mix.
This solution 1mL containing 10μg phosphorus.
4 Instrument
Spectrophotometer.
Step 5 Analysis
5.1 Sample
Weigh 0.10g sample, accurate to 0.0001g.
5.2 Determination of the number of
Independently measured twice and averaged.
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