GB/T 4324.24-2012 English PDFUS$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 4324.24-2012: Methods for chemical analysis of tungsten -- Part 24: Determination of phosphorus content -- Molybdenum blue photometry Status: Valid GB/T 4324.24: Historical versions
Basic dataStandard ID: GB/T 4324.24-2012 (GB/T4324.24-2012)Description (Translated English): Methods for chemical analysis of tungsten -- Part 24: Determination of phosphorus content -- Molybdenum blue photometry Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H63 Classification of International Standard: 77.120.99 Word Count Estimation: 9,982 Older Standard (superseded by this standard): GB/T 4324.24-1984 Regulation (derived from): National Standards Bulletin No. 41 of 2012 Issuing agency(ies): General Administration of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 tungsten powder, tungsten, tungsten trioxide, tungsten blue, purple, tungsten, tungsten carbide, tungsten acid, ammonium paratungstate, metatungstate Determination of phosphorus content. This section applies to tungsten powder, GB/T 4324.24-2012: Methods for chemical analysis of tungsten -- Part 24: Determination of phosphorus content -- Molybdenum blue photometry---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 tungsten Part 24. Determination of phosphorus content Molybdemum blue photometry ICS 77.120.99 H63 National Standards of People's Republic of China Replacing GB/T 4324.24-1984 Chemical analysis of tungsten Part 24. determination of phosphorus content Molybdenum blue spectrophotometric method Part 24. Determinationofphosphoruscontent- Issued on. 2012-12-31 2013-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordGB/T 4324 "chemical analysis of tungsten" is divided into 28 parts. --- Part 1. Determination of lead content - flame atomic absorption spectrometry; --- Part 2. Determination of bismuth content hydride generation atomic absorption spectrometry; --- Part 3. Determination of tin content hydride generation atomic absorption spectrometry; --- Part 4. Determination of antimony content hydride generation atomic absorption spectrometry; --- Part 5. Determination of arsenic content by hydride generation atomic absorption spectrometry; --- Part 6. Determination of iron content of phenanthroline spectrophotometry; --- Part 7. Determination of cobalt content by inductively coupled plasma atomic emission spectrometry; --- Part 8. Determination of the amount of nickel by inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry Diacetyldioxime Gravimetric method; --- Part 9. Determination of cadmium content by inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry; --- Part 10. Determination of copper content - Flame atomic absorption spectrometry; --- Part 11. Determination of aluminum content by inductively coupled plasma atomic emission spectrometry; --- Part 12. Determination of the amount of silicon tetrachloride - molybdenum blue spectrophotometric method; --- Part 13. Inductively coupled plasma calcium atomic emission spectrometry; --- Part 14. Chlorinated Volatile residue amount after Gravimetric method; --- Part 15. Determination of magnesium content - Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry; --- Part 16. Determination of loss on ignition - Gravimetric method; --- Part 17. Determination of sodium content by flame atomic absorption spectrometry; --- Part 18. Determination of potassium content by flame atomic absorption spectrometry; --- Part 19. Determination of titanium content of two methane antipyrine spectrophotometry; --- Part 20. vanadium content - Inductively coupled plasma atomic emission spectrometry; --- Part 21. Determination of chromium content by inductively coupled plasma atomic emission spectrometry; --- Part 22. manganese content - Inductively coupled plasma atomic emission spectrometry; --- Part 23. Determination of sulfur content of combustion conductance method and frequency combustion infrared absorption method; --- Part 24. Determination of phosphorus content - Molybdenum blue spectrophotometric method; --- Part 25. Determination of oxygen pulse heating inert gas fusion - infrared absorption method; --- Part 26. Determination of nitrogen pulse heating inert gas fusion - thermal conductivity method and Nessler reagent spectrophotometric method; --- Part 27. Determination of carbon content in the high-frequency combustion infrared absorption method; --- Part 28. Determination of molybdenum content - Thiocyanate spectrophotometric method. This section GB/T 4324 of Part 24. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 4324.24-1984 "chemical analysis of tungsten beryllium-bearing precipitating agent - molybdenum blue spectrophotometric determination of phosphorus content." this Section compared with the GB/T 4324.24-1984, main technical changes are as follows. --- Increased tungsten carbide, tungsten blue, purple tungsten, ammonium paratungstate and other sample types; The concentration and amount of sulfuric acid --- beryllium from "20g/L", "10mL" to "15g/L", "8mL"; --- Precipitation boiling time by the "5min" to "1min"; --- Determination canceled butanol - chloroform extraction step, and as a masking agent to tartaric acid, ascorbic acid as a reducing agent, Direct determination of phosphorus molybdenum blue color. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is drafted. Zhuzhou Cemented Carbide Group Co., Ltd., Xiamen Tungsten Co., Ltd. Western Metal Materials Company Limited Division, the China Nonferrous Metals Industry Standards and Metrology Institute for Quality. The main drafters of this section. Zhang Ying, easy Jianbo, Chen Daofan, Peng Yu, Yang Jianguo, Zhangjiang Feng, Wang Caiyun, Lin Huirong, Li Tuo. This part of the standard replaces the previous editions are. --- GB/T 4324.24-1984. Chemical analysis of tungsten Part 24. determination of phosphorus content Molybdenum blue spectrophotometric method1 ScopeGB/T 4324 provisions of this part of the tungsten powder, tungsten trioxide, tungsten, tungsten blue, purple tungsten, tungsten carbide, tungsten acid, ammonium paratungstate, ammonium metatungstate phosphorus Determination of content. This Part applies to tungsten powder, tungsten measure, tungsten trioxide, tungsten blue, purple tungsten, tungsten carbide, tungsten acid, ammonium paratungstate, metatungstate phosphorus content set. Determination of the range of 0.0002% ~ 0.018%.2 Method summaryTungsten powder, tungsten bar, fine (in) tungsten carbide particles with hydrogen peroxide decomposition; blue tungsten potassium hydroxide and hydrogen peroxide decomposition; tungsten trioxide, tungstic acid, Ammonium paratungstate, ammonium metatungstate decomposition of potassium hydroxide; Violet Tungsten, coarse grain tungsten carbide is oxidized to tungsten oxide after decomposition with potassium hydroxide. In ammonia Solution to EDTA chelated iron, manganese, copper, magnesium and other impurities to precipitate phosphorus beryllium salt as a carrier, separated from the cobalt, manganese, iron, calcium, magnesium and other impurities. in Sulfuric acid medium, such as arsenic interference with tartaric acid masking elements to ammonium molybdate as chromogenic reagent, phosphorus with ammonium molybdate forming yellow phosphomolybdic heteropoly acid, an anti-bad Ascorbic acid as a reducing agent for the reduction of phosphorus molybdenum yellow phosphorus molybdenum blue colored complex, the absorbance measurements.3 ReagentsUnless otherwise indicated, this part of the reagents used are in line with national standards or industry standard analytical reagents, which are twice distilled water Distilled water. 3.1 Hydrogen peroxide (ρ = 1.10g/mL), pure class distinctions. 3.2 Ammonia (ρ = 0.90g/mL), pure class distinctions. 3.3 EDTA solution (20g/L). 3.4 Potassium hydroxide solution (200g/L). 3.5 sulfate (15). 3.6 sulfate solution [c (H2SO4) = 0.95mol/L]. 3.7 sulfate solution [c (H2SO4) = 0.80mol/L]. 3.8 beryllium sulfate solution (30g/L). Weigh 27g beryllium sulfate in 1000mL beaker, 800mL sulfuric acid solution [c (H2SO4) = 0.60mol/L], transferred to a separatory funnel 1000mL, add 50mL ammonium molybdate solution (100g/L), placed 10min, 50mL added n-butyl Alcohols, shaking 1min, add 100mL of n-butanol - chloroform mixture (13), and extracted 3min. Standing layer, the organic phase was discarded and repeated extraction Take until stannous chloride solution (100g/L) examination until the organic phase no blue. The aqueous phase was transferred to the reagent bottle. 3.9 beryllium sulfate solution (15g/L). Measure 100mL beryllium sulfate solution (3.8), dilute with water to 200mL, and mix. 3.10 tartaric acid solution (100g/L), pure class distinctions. 3.11 ammonium molybdate solution (25g/L), pure class distinctions, filtered after use. 3.12 ascorbic acid solution (10g/L). Weigh 1g acid in 200mL beaker, dissolved in 100mL ethanol solution (11). 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