GB/T 4325.22-2013 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 4325.22-2013: Methods for chemical analysis of molybdenum -- Part 22: Determination of phosphorus content -- Molybdenum blue spectrophotometry Status: Valid GB/T 4325.22: Historical versions
Basic dataStandard ID: GB/T 4325.22-2013 (GB/T4325.22-2013)Description (Translated English): Methods for chemical analysis of molybdenum -- Part 22: Determination of phosphorus content -- Molybdenum blue spectrophotometry Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H63 Classification of International Standard: 77.120.99 Word Count Estimation: 8,849 Older Standard (superseded by this standard): GB/T 4325.24-1984 Regulation (derived from): National Standards Bulletin 2013 No. 6 Issuing agency(ies): General Administration of Quality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 molybdenum powder, molybdenum, molybdenum trioxide and ammonium Determination of phosphorus content. This section applies to molybdenum powder, molybdenum, molybdenum trioxide and ammonium phosphorus content. Measuring range, 0 GB/T 4325.22-2013: Methods for chemical analysis of molybdenum -- Part 22: Determination of phosphorus content -- Molybdenum blue spectrophotometry---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 22. Determination of phosphorus content Molybdenum blue spectrophotometry. ICS 77.120.99 H63 National Standards of People's Republic of China Replacing GB/T 4325.24-1984 Chemical analysis of molybdenum Part 22. determination of phosphorus content Molybdenum blue spectrophotometric method Part 22. Determinationofphosphoruscontent- 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 ForewordGB/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 4325 of Part 22. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 4325.24-1984 "chemical analysis of molybdenum - The molybdenum blue spectrophotometric determination of phosphorus content." This portion GB/T 4325.24-1984 compared to the main technical changes are as follows. --- Standard name from "molybdenum blue spectrophotometric determination of phosphorus content" with "determination of phosphorus content molybdenum blue spectrophotometric method"; --- The "Determination of the number of times" in the "three" to "two"; --- Method summary adds "molybdenum trioxide and ammonium molybdate without acid-soluble, dissolved directly with ammonium hydroxide" and "a positive phosphorus phosphorus oxide Acid "; the" 0.75 ~ 1.2N "to" 0.4mol/L ~ 0.6mol/L "; --- Changes in the content analysis steps. Table 1 "phosphorus content > 0.001% to 0.002%" to "phosphorus content > 0.001% ~ 0.005% ";" phosphorus content > 0.002% to 0.010% "to" phosphorus content > 0.005% to 0.010% "; samples were classified Dissolve; --- Increasing the precision of the terms; --- Adds a preamble and test reports, and a standard format made editorial changes. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is drafted. Northwest Nonferrous Metal Research Institute, Western Materials Co., Ltd., Beijing Mining Research Institute, Zhuzhou Cemented Carbide Group Limited. Drafters of this section. Bo, Sunbao Lian, Yang Pingping, Zhou Kai, Wang Xiaoyan, Zhang Bin, Gao Ying Jian, Yang Jun red, ginger rice demand, Chen Daofan. This part of the standard replaces the previous editions are. --- GB/T 4325.24-1984. Chemical analysis of molybdenum Part 22. determination of phosphorus content Molybdenum blue spectrophotometric method1 ScopeGB/T 4325 provisions of this part of the molybdenum powder, molybdenum, molybdenum trioxide and determination of the amount of phosphorus ammonium molybdate. This section applies to molybdenum powder, molybdenum, molybdenum trioxide and ammonium molybdate determination of phosphorus content. Measurement range. 0.0002% - 0.0180%.2 Method summarySample nitric acid - sulfuric acid decomposition mixed with ammonium hydroxide dissolved molybdenum (molybdenum trioxide and ammonium molybdate used without the acid-soluble, direct hydroxide Ammonium dissolution), the hydrogen peroxide oxidation of ortho-phosphoric acid and phosphorus complexing molybdenum, iron and other elements, then adding ammonium molybdate, ammonium molybdate phosphorus and phosphorus is formed Heteropolyoxomolybdate in 0.4mol/L ~ 0.6mol/L sulfuric acid medium, the n-butanol - chloroform mixed solvent to stannous also Original as phosphorus molybdenum blue, measuring absorbance at 620nm wavelength.3 ReagentsUnless otherwise indicated in the analysis using only recognized as analytical reagents and secondary distilled water or equivalent purity. 3.1 n-butanol. 3.2 ammonium hydroxide (ρ = 0.90g/mL). 3.3 Hydrogen peroxide (19). 3.4 sulfate (15). 3.5 stannous chloride solution (100g/L). formulated with hydrochloric acid (11). 3.6 ammonium molybdate solution (100g/L). 100g of ammonium molybdate [(NH4) 6Mo7O24 · 4H2O] was dissolved in 1000mL of water, filtered and set aside. 3.7 n-butanol - chloroform extracts were mixed. 3 volumes of chloroform and 1 volume of n-butanol (3.1) are mixed. 3.8 nitric acid - sulfuric acid mixture. 50mL nitric acid (ρ = 1.42g/mL) and 5mL sulfuric acid (ρ = 1.84g/mL), was added 45mL of water, Mix well. 3.9 Phosphorus standard stock solution. Weigh accurately 0.4393g advance at 105 ℃ ~ 110 ℃ baking 1h potassium dihydrogen phosphate reference reagents placed 250mL beaker was added 100mL of water, completely dissolved and transferred to 1000mL volumetric flask. Dilute with water to volume, and mix. This solution 1mL solution containing 100μg phosphorus. 3.10 Phosphorus standard solution. Pipette 5.00mL phosphorus standard stock solution (3.9), placed in 100mL volumetric flask, dilute to the mark, mix uniform. This solution 1mL containing 5μg phosphorus.4 SampleMolybdenum should smash through the 0.75mm standard sieve.5 InstrumentsSpectrophotometer. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 4325.22-2013_English be delivered?Answer: Upon your order, we will start to translate GB/T 4325.22-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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